aboutsummaryrefslogtreecommitdiffstats
path: root/activerecord/CHANGELOG
blob: b3a5ee024949a5580e43d0893dec5d0926dbe34d (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143
5144
5145
5146
5147
5148
5149
5150
5151
5152
5153
5154
5155
5156
5157
5158
5159
5160
5161
5162
5163
5164
5165
5166
5167
5168
5169
5170
5171
5172
5173
5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184
5185
5186
5187
5188
5189
5190
5191
5192
5193
5194
5195
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
5207
5208
5209
5210
5211
5212
5213
5214
5215
5216
5217
5218
5219
5220
5221
5222
5223
5224
5225
5226
5227
5228
5229
5230
5231
5232
5233
5234
5235
5236
5237
5238
5239
5240
5241
5242
5243
5244
5245
5246
5247
5248
5249
5250
5251
5252
5253
5254
5255
5256
5257
5258
5259
5260
5261
5262
5263
5264
5265
5266
5267
5268
5269
5270
5271
5272
5273
5274
5275
5276
5277
5278
5279
5280
5281
5282
5283
5284
5285
5286
5287
5288
5289
5290
5291
5292
5293
5294
5295
5296
5297
5298
5299
5300
5301
5302
5303
5304
5305
5306
5307
5308
5309
5310
5311
5312
5313
5314
5315
5316
5317
5318
5319
5320
5321
5322
5323
5324
5325
5326
5327
5328
5329
5330
5331
5332
5333
5334
5335
5336
5337
5338
5339
5340
5341
5342
5343
5344
5345
5346
5347
5348
5349
5350
5351
5352
5353
5354
5355
5356
5357
5358
5359
5360
5361
5362
5363
5364
5365
5366
5367
5368
5369
5370
5371
5372
5373
5374
5375
5376
5377
5378
5379
5380
5381
5382
5383
5384
5385
5386
5387
5388
5389
5390
5391
5392
5393
5394
5395
5396
5397
5398
5399
5400
5401
5402
5403
5404
5405
5406
5407
5408
5409
5410
5411
5412
5413
5414
5415
5416
5417
5418
5419
5420
5421
5422
5423
5424
5425
5426
5427
5428
5429
5430
5431
5432
5433
5434
5435
5436
5437
5438
5439
5440
5441
5442
5443
5444
5445
5446
5447
5448
5449
5450
5451
5452
5453
5454
5455
5456
5457
5458
5459
5460
5461
5462
5463
5464
5465
5466
5467
5468
5469
5470
5471
5472
5473
5474
5475
5476
5477
5478
5479
5480
5481
5482
5483
5484
5485
5486
5487
5488
5489
5490
5491
5492
5493
5494
5495
5496
5497
5498
5499
5500
5501
5502
5503
5504
5505
5506
5507
5508
5509
5510
5511
5512
*2.0.1* (December 7th, 2007)

* Removed query cache rescue as it could cause code to be run twice (closes #10408) [DHH]


*2.0.0* (December 6th, 2007)

* Anchor DateTimeTest to fixed DateTime instead of a variable value based on Time.now#advance#to_datetime, so that this test passes on 64-bit platforms running Ruby 1.8.6+ [Geoff Buesing]

* Fixed that the Query Cache should just be ignored if the database is misconfigured (so that the "About your applications environment" works even before the database has been created) [DHH]

* Fixed that the truncation of strings longer than 50 chars should use inspect
so newlines etc are escaped #10385 [Norbert Crombach]

* Fixed that habtm associations should be able to set :select as part of their definition and have that honored [DHH]

* Document how the :include option can be used in Calculations::calculate.  Closes #7446 [adamwiggins, ultimoamore]

* Fix typo in documentation for polymorphic associations w/STI. Closes #7461 [johnjosephbachir]

* Reveal that the type option in migrations can be any supported column type for your database but also include caveat about agnosticism. Closes #7531 [adamwiggins, mikong]

* More complete documentation for find_by_sql. Closes #7912 [fearoffish]

* Added ActiveRecord::Base#becomes to turn a record into one of another class (mostly relevant for STIs) [DHH]. Example:

    render :partial => @client.becomes(Company) # renders companies/company instead of clients/client

* Fixed that to_xml should not automatically pass :procs to associations included with :include #10162 [Chu Yeow]

* Fix documentation typo introduced in [8250]. Closes #10339 [Henrik N]

* Foxy fixtures: support single-table inheritance.  #10234 [tom]

* Foxy fixtures: allow mixed usage to make migration easier and more attractive.  #10004 [lotswholetime]

* Make the record_timestamps class-inheritable so it can be set per model.  #10004 [tmacedo]

* Allow validates_acceptance_of to use a real attribute instead of only virtual (so you can record that the acceptance occured) #7457 [ambethia]

* DateTimes use Ruby's default calendar reform setting. #10201 [Geoff Buesing]

* Dynamic finders on association collections respect association :order and :limit.  #10211, #10227 [Patrick Joyce, Rick Olson, Jack Danger Canty]

* Add 'foxy' support for fixtures of polymorphic associations. #10183 [jbarnette, David Lowenfels]

* validates_inclusion_of and validates_exclusion_of allow formatted :message strings.  #8132 [devrieda, Mike Naberezny]

* attr_readonly behaves well with optimistic locking.  #10188 [Nick Bugajski]

* Base#to_xml supports the nil="true" attribute like Hash#to_xml.  #8268 [Catfish]

* Change plings to the more conventional quotes in the documentation. Closes #10104 [danger]

* Fix HasManyThrough Association so it uses :conditions on the HasMany Association.  Closes #9729 [danger]

* Ensure that column names are quoted.  Closes #10134 [wesley.moxam]

* Smattering of grammatical fixes to documentation. Closes #10083 [BobSilva]

* Enhance explanation with more examples for attr_accessible macro. Closes #8095 [fearoffish, Marcel Molina]

* Update association/method mapping table to refected latest collection methods for has_many :through. Closes #8772 [Pratik Naik]

* Explain semantics of having several different AR instances in a transaction block. Closes #9036 [jacobat, Marcel Molina]

* Update Schema documentation to use updated sexy migration notation. Closes #10086 [sjgman9]

* Make fixtures work with the new test subclasses. [Tarmo Tänav, Koz]

* Introduce finder :joins with associations. Same :include syntax but with inner rather than outer joins.  #10012 [RubyRedRick]
    # Find users with an avatar
    User.find(:all, :joins => :avatar)

    # Find posts with a high-rated comment.
    Post.find(:all, :joins => :comments, :conditions => 'comments.rating > 3')

* Associations: speedup duplicate record check.  #10011 [Pratik Naik]

* Make sure that << works on has_many associations on unsaved records.  Closes #9989 [hasmanyjosh]

* Allow association redefinition in subclasses.  #9346 [wildchild]

* Fix has_many :through delete with custom foreign keys.  #6466 [naffis]

* Foxy fixtures, from rathole (http://svn.geeksomnia.com/rathole/trunk/README)
    - stable, autogenerated IDs
    - specify associations (belongs_to, has_one, has_many) by label, not ID
    - specify HABTM associations as inline lists
    - autofill timestamp columns
    - support YAML defaults
    - fixture label interpolation
  Enabled for fixtures that correspond to a model class and don't specify a primary key value.  #9981 [jbarnette]

* Add docs explaining how to protect all attributes using attr_accessible with no arguments. Closes #9631 [boone, rmm5t]

* Update add_index documentation to use new options api. Closes #9787 [Kamal Fariz Mahyuddin]

* Allow find on a has_many association defined with :finder_sql to accept id arguments as strings like regular find does. Closes #9916 [krishna]

* Use VALID_FIND_OPTIONS when resolving :find scoping rather than hard coding the list of valid find options. Closes #9443 [sur]

* Limited eager loading no longer ignores scoped :order. Closes #9561 [danger, Josh Peek]

* Assigning an instance of a foreign class to a composed_of aggregate calls an optional conversion block. Refactor and simplify composed_of implementation.  #6322 [brandon, Chris Cruft]

* Assigning nil to a composed_of aggregate also sets its immediate value to nil.  #9843 [Chris Cruft]

* Ensure that mysql quotes table names with database names correctly.  Closes #9911 [crayz]

  "foo.bar" => "`foo`.`bar`"  

* Complete the assimilation of Sexy Migrations from ErrFree [Chris Wanstrath, PJ Hyett]
	http://errtheblog.com/post/2381

* Qualified column names work in hash conditions, like :conditions => { 'comments.created_at' => ... }.  #9733 [danger]

* Fix regression where the association would not construct new finder SQL on save causing bogus queries for "WHERE owner_id = NULL" even after owner was saved.  #8713 [Bryan Helmkamp]

* Refactor association create and build so before & after callbacks behave consistently.  #8854 [Pratik Naik, mortent]

* Quote table names. Defaults to column quoting.  #4593 [Justin Lynn, gwcoffey, eadz, Dmitry V. Sabanin, Jeremy Kemper]

* Alias association #build to #new so it behaves predictably.  #8787 [Pratik Naik]

* Add notes to documentation regarding attr_readonly behavior with counter caches and polymorphic associations.  Closes #9835 [saimonmoore, rick]

* Observers can observe model names as symbols properly now.  Closes #9869  [queso]

* find_and_(initialize|create)_by methods can now properly initialize protected attributes [Tobias Luetke]

* belongs_to infers the foreign key from the association name instead of from the class name.  [Jeremy Kemper]

* PostgreSQL: support multiline default values.  #7533 [Carl Lerche, aguynamedryan, Rein Henrichs, Tarmo Tänav]

* MySQL: fix change_column on not-null columns that don't accept dfeault values of ''.  #6663 [Jonathan Viney, Tarmo Tänav]

* validates_uniqueness_of behaves well with abstract superclasses and
single-table inheritance.  #3833, #9886 [Gabriel Gironda, rramdas, François Beausoleil, Josh Peek, Tarmo Tänav, pat]

* Warn about protected attribute assigments in development and test environments when mass-assigning to an attr_protected attribute.  #9802 [Henrik N]

* Speedup database date/time parsing.  [Jeremy Kemper, Tarmo Tänav]

* Fix calling .clear on a has_many :dependent=>:delete_all association. [Tarmo Tänav]

* Allow change_column to set NOT NULL in the PostgreSQL adapter [Tarmo Tänav]

* Fix that ActiveRecord would create attribute methods and override custom attribute getters if the method is also defined in Kernel.methods. [Rick]

* Don't call attr_readonly on polymorphic belongs_to associations, in case it matches the name of some other non-ActiveRecord class/module.  [Rick]

* Try loading activerecord-<adaptername>-adapter gem before trying a plain require so you can use custom gems for the bundled adapters. Also stops gems from requiring an adapter from an old Active Record gem.  [Jeremy Kemper, Derrick Spell]


*2.0.0 [Preview Release]* (September 29th, 2007) [Includes duplicates of changes from 1.14.2 - 1.15.3]

* Add attr_readonly to specify columns that are skipped during a normal ActiveRecord #save operation. Closes #6896 [dcmanges]

  class Comment < ActiveRecord::Base
    # Automatically sets Article#comments_count as readonly.
    belongs_to :article, :counter_cache => :comments_count
  end

  class Article < ActiveRecord::Base
    attr_readonly :approved_comments_count
  end

* Make size for has_many :through use counter cache if it exists.  Closes #9734 [xaviershay]

* Remove DB2 adapter since IBM chooses to maintain their own adapter instead.  [Jeremy Kemper]

* Extract Oracle, SQLServer, and Sybase adapters into gems.  [Jeremy Kemper]

* Added fixture caching that'll speed up a normal fixture-powered test suite between 50% and 100% #9682 [Frederick Cheung]

* Correctly quote id list for limited eager loading.  #7482 [tmacedo]

* Fixed that using version-targetted migrates would fail on loggers other than the default one #7430 [valeksenko]

* Fixed rename_column for SQLite when using symbols for the column names #8616 [drodriguez]

* Added the possibility of using symbols in addition to concrete classes with ActiveRecord::Observer#observe.  #3998 [Robby Russell, Tarmo Tänav]

* Added ActiveRecord::Base#to_json/from_json [DHH, Chu Yeow]

* Added ActiveRecord::Base#from_xml [DHH]. Example:

    xml = "<person><name>David</name></person>"
    Person.new.from_xml(xml).name # => "David"

* Define dynamic finders as real methods after first usage. [bscofield]

* Deprecation: remove deprecated threaded_connections methods. Use allow_concurrency instead.  [Jeremy Kemper]

* Associations macros accept extension blocks alongside modules.  #9346 [Josh Peek]

* Speed up and simplify query caching.  [Jeremy Kemper]

* connection.select_rows 'sql' returns an array (rows) of arrays (field values).  #2329 [Michael Schuerig]

* Eager loading respects explicit :joins.  #9496 [dasil003]

* Extract Firebird, FrontBase, and OpenBase adapters into gems.  #9508, #9509, #9510 [Jeremy Kemper]

* RubyGem database adapters: expects a gem named activerecord-<database>-adapter with active_record/connection_adapters/<database>_adapter.rb in its load path.  [Jeremy Kemper]

* Fixed that altering join tables in migrations would fail w/ sqlite3 #7453 [TimoMihaljov/brandon]

* Fix association writer with :dependent => :nullify.  #7314 [Jonathan Viney]

* OpenBase: update for new lib and latest Rails. Support migrations.  #8748 [dcsesq]

* Moved acts_as_tree into a plugin of the same name on the official Rails svn.  #9514 [Pratik Naik]

* Moved acts_as_nested_set into a plugin of the same name on the official Rails svn.  #9516 [Josh Peek]

* Moved acts_as_list into a plugin of the same name on the official Rails svn.  [Josh Peek]

* Explicitly require active_record/query_cache before using it.  [Jeremy Kemper]

* Fix bug where unserializing an attribute attempts to modify a frozen @attributes hash for a deleted record.  [Rick, marclove]

* Performance: absorb instantiate and initialize_with_callbacks into the Base methods. [Jeremy Kemper]

* Fixed that eager loading queries and with_scope should respect the :group option [DHH]

* Improve performance and functionality of the postgresql adapter.  Closes #8049 [roderickvd]

	For more information see: http://dev.rubyonrails.org/ticket/8049

* Don't clobber includes passed to has_many.count [danger]

* Make sure has_many uses :include when counting [danger]

* Change the implementation of ActiveRecord's attribute reader and writer methods [nzkoz]
 - Generate Reader and Writer methods which cache attribute values in hashes.  This is to avoid repeatedly parsing the same date or integer columns.
 - Change exception raised when users use find with :select then try to access a skipped column.  Plugins could override missing_attribute() to lazily load the columns.
 - Move method definition to the class, instead of the instance
 - Always generate the readers, writers and predicate methods.

* Perform a deep #dup on query cache results so that modifying activerecord attributes does not modify the cached attributes.  [Rick]

# Ensure that has_many :through associations use a count query instead of loading the target when #size is called.  Closes #8800 [Pratik Naik]

* Added :unless clause to validations #8003 [monki]. Example: 

    def using_open_id?
      !identity_url.blank?
    end

    validates_presence_of :identity_url, :if => using_open_id?
    validates_presence_of :username, :unless => using_open_id?
    validates_presence_of :password, :unless => using_open_id?

* Fix #count on a has_many :through association so that it recognizes the :uniq option.  Closes #8801 [Pratik Naik]

* Fix and properly document/test count(column_name) usage. Closes #8999 [Pratik Naik]

* Remove deprecated count(conditions=nil, joins=nil) usage.  Closes #8993 [Pratik Naik]

* Change belongs_to so that the foreign_key assumption is taken from the association name, not the class name.  Closes #8992 [hasmanyjosh]

  OLD
    belongs_to :visitor, :class_name => 'User' # => inferred foreign_key is user_id
    
  NEW
    belongs_to :visitor, :class_name => 'User' # => inferred foreign_key is visitor_id

* Remove spurious tests from deprecated_associations_test, most of these aren't deprecated, and are duplicated in associations_test.  Closes #8987 [Pratik Naik]

* Make create! on a has_many :through association return the association object.  Not the collection.  Closes #8786 [Pratik Naik]

* Move from select * to select tablename.* to avoid clobbering IDs. Closes #8889 [dasil003]

* Don't call unsupported methods on associated objects when using :include, :method with to_xml #7307, [manfred, jwilger]

* Define collection singular ids method for has_many :through associations.  #8763 [Pratik Naik]

* Array attribute conditions work with proxied association collections.  #8318 [Kamal Fariz Mahyuddin, theamazingrando]

* Fix polymorphic has_one associations declared in an abstract class.  #8638 [Pratik Naik, Dax Huiberts]

* Fixed validates_associated should not stop on the first error.  #4276 [mrj, Manfred Stienstra, Josh Peek]

* Rollback if commit raises an exception.  #8642 [kik, Jeremy Kemper]

* Update tests' use of fixtures for the new collections api.  #8726 [Kamal Fariz Mahyuddin]

* Save associated records only if the association is already loaded.  #8713 [blaine]

* MySQL: fix show_variable.  #8448 [matt, Jeremy Kemper]

* Fixtures: correctly delete and insert fixtures in a single transaction.  #8553 [Michael Schuerig]

* Fixtures: people(:technomancy, :josh) returns both fixtures.  #7880 [technomancy, Josh Peek]

* Calculations support non-numeric foreign keys.  #8154 [Kamal Fariz Mahyuddin]

* with_scope is protected.  #8524 [Josh Peek]

* Quickref for association methods.  #7723 [marclove, Mindsweeper]

* Calculations: return nil average instead of 0 when there are no rows to average.  #8298 [davidw]

* acts_as_nested_set: direct_children is sorted correctly.  #4761 [Josh Peek, rails@33lc0.net]

* Raise an exception if both attr_protected and attr_accessible are declared.  #8507 [stellsmi]

* SQLite, MySQL, PostgreSQL, Oracle: quote column names in column migration SQL statements.  #8466 [marclove, lorenjohnson]

* Allow nil serialized attributes with a set class constraint.  #7293 [sandofsky]

* Oracle: support binary fixtures.  #7987 [Michael Schoen]

* Fixtures: pull fixture insertion into the database adapters.  #7987 [Michael Schoen]

* Announce migration versions as they're performed.  [Jeremy Kemper]

* find gracefully copes with blank :conditions.  #7599 [Dan Manges, johnnyb]

* validates_numericality_of takes :greater_than, :greater_than_or_equal_to, :equal_to, :less_than, :less_than_or_equal_to, :odd, and :even options.  #3952 [Bob Silva, Dan Kubb, Josh Peek]

* MySQL: create_database takes :charset and :collation options. Charset defaults to utf8.  #8448 [matt]

* Find with a list of ids supports limit/offset.  #8437 [hrudududu]

* Optimistic locking: revert the lock version when an update fails.  #7840 [plang]

* Migrations: add_column supports custom column types.  #7742 [jsgarvin, Theory]

* Load database adapters on demand. Eliminates config.connection_adapters and RAILS_CONNECTION_ADAPTERS. Add your lib directory to the $LOAD_PATH and put your custom adapter in lib/active_record/connection_adapters/adaptername_adapter.rb. This way you can provide custom adapters as plugins or gems without modifying Rails. [Jeremy Kemper]

* Ensure that associations with :dependent => :delete_all respect :conditions option.  Closes #8034 [danger, Josh Peek, Rick]

* belongs_to assignment creates a new proxy rather than modifying its target in-place.  #8412 [mmangino@elevatedrails.com]

* Fix column type detection while loading fixtures.  Closes #7987 [roderickvd]

* Document deep eager includes.  #6267 [Josh Susser, Dan Manges]

* Document warning that associations names shouldn't be reserved words.  #4378 [murphy@cYcnus.de, Josh Susser]

* Sanitize Base#inspect.  #8392, #8623 [Nik Wakelin, jnoon]

* Replace the transaction {|transaction|..} semantics with a new Exception ActiveRecord::Rollback.   [Koz]

* Oracle: extract column length for CHAR also.  #7866 [ymendel]

* Document :allow_nil option for validates_acceptance_of since it defaults to true. [tzaharia]

* Update documentation for :dependent declaration so that it explicitly uses the non-deprecated API. [danger]

* Add documentation caveat about when to use count_by_sql. [fearoffish]

* Enhance documentation for increment_counter and decrement_counter. [fearoffish]

* Provide brief introduction to what optimistic locking is. [fearoffish]

* Add documentation for :encoding option to mysql adapter. [marclove]

* Added short-hand declaration style to migrations (inspiration from Sexy Migrations, http://errtheblog.com/post/2381) [DHH]. Example:

    create_table "products" do |t|
      t.column "shop_id",    :integer
      t.column "creator_id", :integer
      t.column "name",       :string,   :default => "Untitled"
      t.column "value",      :string,   :default => "Untitled"
      t.column "created_at", :datetime
      t.column "updated_at", :datetime
    end
  
  ...can now be written as:
  
    create_table :products do |t|
      t.integer :shop_id, :creator_id
      t.string  :name, :value, :default => "Untitled"
      t.timestamps
    end

* Use association name for the wrapper element when using .to_xml.  Previous behavior lead to non-deterministic situations with STI and polymorphic associations. [Koz, jstrachan]

* Improve performance of calling .create on has_many :through associations. [evan]

* Improved cloning performance by relying less on exception raising #8159 [Blaine]

* Added ActiveRecord::Base.inspect to return a column-view like #<Post id:integer, title:string, body:text> [DHH]

* Added yielding of Builder instance for ActiveRecord::Base#to_xml calls [DHH]

* Small additions and fixes for ActiveRecord documentation.  Closes #7342 [jeremymcanally]

* Add helpful debugging info to the ActiveRecord::StatementInvalid exception in ActiveRecord::ConnectionAdapters::SqliteAdapter#table_structure.  Closes #7925. [court3nay]

* SQLite: binary escaping works with $KCODE='u'.  #7862 [tsuka]

* Base#to_xml supports serialized attributes.  #7502 [jonathan]

* Base.update_all :order and :limit options. Useful for MySQL updates that must be ordered to avoid violating unique constraints.  [Jeremy Kemper]

* Remove deprecated object transactions.  People relying on this functionality should install the object_transactions plugin at http://code.bitsweat.net/svn/object_transactions.  Closes #5637 [Koz, Jeremy Kemper]

* PostgreSQL: remove DateTime -> Time downcast. Warning: do not enable translate_results for the C bindings if you have timestamps outside Time's domain.  [Jeremy Kemper]

* find_or_create_by_* takes a hash so you can create with more attributes than are in the method name. For example, Person.find_or_create_by_name(:name => 'Henry', :comments => 'Hi new user!') is equivalent to Person.find_by_name('Henry') || Person.create(:name => 'Henry', :comments => 'Hi new user!').  #7368 [Josh Susser]

* Make sure with_scope takes both :select and :joins into account when setting :readonly.  Allows you to save records you retrieve using method_missing on a has_many :through associations.  [Koz]

* Allow a polymorphic :source for has_many :through associations.  Closes #7143 [protocool]

* Consistent public/protected/private visibility for chained methods.  #7813 [Dan Manges]

* Oracle: fix quoted primary keys and datetime overflow.  #7798 [Michael Schoen]

* Consistently quote primary key column names.  #7763 [toolmantim]

* Fixtures: fix YAML ordered map support.  #2665 [Manuel Holtgrewe, nfbuckley]

* DateTimes assume the default timezone.  #7764 [Geoff Buesing]

* Sybase: hide timestamp columns since they're inherently read-only.  #7716 [Mike Joyce]

* Oracle: overflow Time to DateTime.  #7718 [Michael Schoen]

* PostgreSQL: don't use async_exec and async_query with postgres-pr.  #7727, #7762 [flowdelic, toolmantim]

* Fix has_many :through << with custom foreign keys.  #6466, #7153 [naffis, Rich Collins]

* Test DateTime native type in migrations, including an edge case with dates
during calendar reform.  #7649, #7724 [fedot, Geoff Buesing]

* SQLServer: correctly schema-dump tables with no indexes or descending indexes.  #7333, #7703 [Jakob S, Tom Ward]

* SQLServer: recognize real column type as Ruby float.  #7057 [sethladd, Tom Ward]

* Added fixtures :all as a way of loading all fixtures in the fixture directory at once #7214 [manfred]

* Added database connection as a yield parameter to ActiveRecord::Base.transaction so you can manually rollback [DHH]. Example:

    transaction do |transaction|
      david.withdrawal(100)
      mary.deposit(100)
      transaction.rollback! # rolls back the transaction that was otherwise going to be successful
    end

* Made increment_counter/decrement_counter play nicely with optimistic locking, and added a more general update_counters method [Jamis Buck]

* Reworked David's query cache to be available as Model.cache {...}. For the duration of the block no select query should be run more then once. Any inserts/deletes/executes will flush the whole cache however [Tobias Luetke]
  Task.cache { Task.find(1); Task.find(1) } #=> 1 query
  
* When dealing with SQLite3, use the table_info pragma helper, so that the bindings can do some translation for when sqlite3 breaks incompatibly between point releases. [Jamis Buck]

* Oracle: fix lob and text default handling.  #7344 [gfriedrich, Michael Schoen]

* SQLServer: don't choke on strings containing 'null'.  #7083 [Jakob S]

* MySQL: blob and text columns may not have defaults in 5.x. Update fixtures schema for strict mode.  #6695 [Dan Kubb]

* update_all can take a Hash argument. sanitize_sql splits into two methods for conditions and assignment since NULL values and delimiters are handled differently.  #6583, #7365 [sandofsky, Assaf]

* MySQL: SET SQL_AUTO_IS_NULL=0 so 'where id is null' doesn't select the last inserted id.  #6778 [Jonathan Viney, timc]

* Use Date#to_s(:db) for quoted dates.  #7411 [Michael Schoen]

* Don't create instance writer methods for class attributes.  Closes #7401 [Rick]

* Docs: validations examples.  #7343 [zackchandler]

* Add missing tests ensuring callbacks work with class inheritance.  Closes #7339 [sandofsky]

* Fixtures use the table name and connection from set_fixture_class.  #7330 [Anthony Eden]

* Remove useless code in #attribute_present? since 0 != blank?.  Closes #7249 [Josh Susser]

* Fix minor doc typos. Closes #7157 [Josh Susser]

* Fix incorrect usage of #classify when creating the eager loading join statement.  Closes #7044 [Josh Susser]

* SQLServer: quote table name in indexes query.  #2928 [keithm@infused.org]

* Subclasses of an abstract class work with single-table inheritance.  #5704, #7284 [BertG, nick+rails@ag.arizona.edu]

* Make sure sqlite3 driver closes open connections on disconnect [Rob Rasmussen]

* [DOC] clear up some ambiguity with the way has_and_belongs_to_many creates the default join table name.  #7072 [jeremymcanally]

* change_column accepts :default => nil. Skip column options for primary keys.  #6956, #7048 [Dan Manges, Jeremy Kemper]

* MySQL, PostgreSQL: change_column_default quotes the default value and doesn't lose column type information.  #3987, #6664 [Jonathan Viney, manfred, altano@bigfoot.com]

* Oracle: create_table takes a :sequence_name option to override the 'tablename_seq' default.  #7000 [Michael Schoen]

* MySQL: retain SSL settings on reconnect.  #6976 [randyv2]

* Apply scoping during initialize instead of create.  Fixes setting of foreign key when using find_or_initialize_by with scoping. [Cody Fauser]

* SQLServer: handle [quoted] table names.  #6635 [rrich]

* acts_as_nested_set works with single-table inheritance.  #6030 [Josh Susser]

* PostgreSQL, Oracle: correctly perform eager finds with :limit and :order.  #4668, #7021 [eventualbuddha, Michael Schoen]

* Pass a range in :conditions to use the SQL BETWEEN operator.  #6974 [Dan Manges]
    Student.find(:all, :conditions => { :grade => 9..12 })

* Fix the Oracle adapter for serialized attributes stored in CLOBs.  Closes #6825 [mschoen, tdfowler]

* [DOCS] Apply more documentation for ActiveRecord Reflection.  Closes #4055 [Robby Russell]

* [DOCS] Document :allow_nil option of #validate_uniqueness_of. Closes #3143 [Caio Chassot]

* Bring the sybase adapter up to scratch for 1.2 release. [jsheets]

* Rollback new_record? and id when an exception is raised in a save callback.  #6910 [Ben Curren, outerim]

* Pushing a record on an association collection doesn't unnecessarily load all the associated records.  [Obie Fernandez, Jeremy Kemper]

* Oracle: fix connection reset failure.  #6846 [leonlleslie]

* Subclass instantiation doesn't try to explicitly require the corresponding subclass.  #6840 [leei, Jeremy Kemper]

* fix faulty inheritance tests and that eager loading grabs the wrong inheritance column when the class of your association is an STI subclass. Closes #6859 [protocool]

* Consolidated different create and create! versions to call through to the base class with scope. This fixes inconsistencies, especially related to protected attribtues. Closes #5847 [Alexander Dymo, Tobias Luetke]

* find supports :lock with :include. Check whether your database allows SELECT ... FOR UPDATE with outer joins before using.  #6764 [vitaly, Jeremy Kemper]

* Add AssociationCollection#create! to be consistent with AssociationCollection#create when dealing with a foreign key that is a protected attribute [Cody Fauser]

* Added counter optimization for AssociationCollection#any? so person.friends.any? won't actually load the full association if we have the count in a cheaper form [DHH]

* Change fixture_path to a class inheritable accessor allowing test cases to have their own custom set of fixtures. #6672 [zdennis]

* Quote ActiveSupport::Multibyte::Chars.  #6653 [Julian Tarkhanov]

* Simplify query_attribute by typecasting the attribute value and checking whether it's nil, false, zero or blank.  #6659 [Jonathan Viney]

* validates_numericality_of uses \A \Z to ensure the entire string matches rather than ^ $ which may match one valid line of a multiline string.  #5716 [Andreas Schwarz]

* Run validations in the order they were declared.  #6657 [obrie]

* MySQL: detect when a NOT NULL column without a default value is misreported as default ''.  Can't detect for string, text, and binary columns since '' is a legitimate default.  #6156 [simon@redhillconsulting.com.au, obrie, Jonathan Viney, Jeremy Kemper]

* Simplify association proxy implementation by factoring construct_scope out of method_missing.  #6643 [martin]

* Oracle: automatically detect the primary key.  #6594 [vesaria, Michael Schoen]

* Oracle: to increase performance, prefetch 100 rows and enable similar cursor sharing. Both are configurable in database.yml.  #6607 [philbogle@gmail.com, ray.fortna@jobster.com, Michael Schoen]

* Don't inspect unloaded associations.  #2905 [lmarlow]

* SQLite: use AUTOINCREMENT primary key in >= 3.1.0.  #6588, #6616 [careo, lukfugl]

* Cache inheritance_column.  #6592 [Stefan Kaes]

* Firebird: decimal/numeric support.  #6408 [macrnic]

* make add_order a tad faster. #6567 [Stefan Kaes]

* Find with :include respects scoped :order.  #5850

* Support nil and Array in :conditions => { attr => value } hashes.  #6548 [Assaf, Jeremy Kemper]
    find(:all, :conditions => { :topic_id => [1, 2, 3], :last_read => nil }

* Consistently use LOWER() for uniqueness validations (rather than mixing with UPPER()) so the database can always use a functional index on the lowercased column.  #6495 [Si]

* SQLite: fix calculations workaround, remove count(distinct) query rewrite, cleanup test connection scripts.  [Jeremy Kemper]

* SQLite: count(distinct) queries supported in >= 3.2.6.  #6544 [Bob Silva]

* Dynamically generate reader methods for serialized attributes.  #6362 [Stefan Kaes]

* Deprecation: object transactions warning.  [Jeremy Kemper]

* has_one :dependent => :nullify ignores nil associates.  #4848, #6528 [bellis@deepthought.org, janovetz, Jeremy Kemper]

* Oracle: resolve test failures, use prefetched primary key for inserts, check for null defaults, fix limited id selection for eager loading. Factor out some common methods from all adapters.  #6515 [Michael Schoen]

* Make add_column use the options hash with the Sqlite Adapter. Closes #6464 [obrie]

* Document other options available to migration's add_column. #6419 [grg]

* MySQL: all_hashes compatibility with old MysqlRes class.  #6429, #6601 [Jeremy Kemper]

* Fix has_many :through to add the appropriate conditions when going through an association using STI. Closes #5783. [Jonathan Viney]

* fix select_limited_ids_list issues in postgresql, retain current behavior in other adapters [Rick]

* Restore eager condition interpolation, document it's differences [Rick]

* Don't rollback in teardown unless a transaction was started. Don't start a transaction in create_fixtures if a transaction is started.  #6282 [Jacob Fugal, Jeremy Kemper]

* Add #delete support to has_many :through associations.  Closes #6049 [Martin Landers]

* Reverted old select_limited_ids_list postgresql fix that caused issues in mysql.  Closes #5851 [Rick]

* Removes the ability for eager loaded conditions to be interpolated, since there is no model instance to use as a context for interpolation. #5553 [turnip@turnipspatch.com]

* Added timeout option to SQLite3 configurations to deal more gracefully with SQLite3::BusyException, now the connection can instead retry for x seconds to see if the db clears up before throwing that exception #6126 [wreese@gmail.com]

* Added update_attributes! which uses save! to raise an exception if a validation error prevents saving #6192 [jonathan]

* Deprecated add_on_boundary_breaking (use validates_length_of instead) #6292 [BobSilva]

* The has_many create method works with polymorphic associations.  #6361 [Dan Peterson]

* MySQL: introduce Mysql::Result#all_hashes to support further optimization.  #5581 [Stefan Kaes]

* save! shouldn't validate twice.  #6324 [maiha, Bob Silva]

* Association collections have an _ids reader method to match the existing writer for collection_select convenience (e.g. employee.task_ids). The writer method skips blank ids so you can safely do @employee.task_ids = params[:tasks] without checking every time for an empty list or blank values.  #1887, #5780 [Michael Schuerig]

* Add an attribute reader method for ActiveRecord::Base.observers [Rick Olson]

* Deprecation: count class method should be called with an options hash rather than two args for conditions and joins.  #6287 [Bob Silva]

* has_one associations with a nil target may be safely marshaled.  #6279 [norbauer, Jeremy Kemper]

* Duplicate the hash provided to AR::Base#to_xml to prevent unexpected side effects [Koz]

* Add a :namespace option to  AR::Base#to_xml [Koz]

* Deprecation tests. Remove warnings for dynamic finders and for the foo_count method if it's also an attribute. [Jeremy Kemper]

* Mock Time.now for more accurate Touch mixin tests.  #6213 [Dan Peterson]

* Improve yaml fixtures error reporting.  #6205 [Bruce Williams]

* Rename AR::Base#quote so people can use that name in their models. #3628 [Koz]

* Add deprecation warning for inferred foreign key. #6029 [Josh Susser]

* Fixed the Ruby/MySQL adapter we ship with Active Record to work with the new authentication handshake that was introduced in MySQL 4.1, along with the other protocol changes made at that time #5723 [jimw@mysql.com]

* Deprecation: use :dependent => :delete_all rather than :exclusively_dependent => true.  #6024 [Josh Susser]

* Document validates_presences_of behavior with booleans: you probably want validates_inclusion_of :attr, :in => [true, false].  #2253 [Bob Silva]

* Optimistic locking: gracefully handle nil versions, treat as zero.  #5908 [Tom Ward]

* to_xml: the :methods option works on arrays of records.  #5845 [Josh Starcher]

* Deprecation: update docs. #5998 [jakob@mentalized.net, Kevin Clark]

* Add some XmlSerialization tests for ActiveRecord [Rick Olson]

* has_many :through conditions are sanitized by the associating class.  #5971 [martin.emde@gmail.com]

* Tighten rescue clauses.  #5985 [james@grayproductions.net]

* Fix spurious newlines and spaces in AR::Base#to_xml output [Jamis Buck]

* has_one supports the :dependent => :delete option which skips the typical callback chain and deletes the associated object directly from the database.  #5927 [Chris Mear, Jonathan Viney]

* Nested subclasses are not prefixed with the parent class' table_name since they should always use the base class' table_name.  #5911 [Jonathan Viney]

* SQLServer: work around bug where some unambiguous date formats are not correctly identified if the session language is set to german.  #5894 [Tom Ward, kruth@bfpi]

* SQLServer: fix eager association test.  #5901 [Tom Ward]

* Clashing type columns due to a sloppy join shouldn't wreck single-table inheritance.  #5838 [Kevin Clark]

* Fixtures: correct escaping of \n and \r.  #5859 [evgeny.zislis@gmail.com]

* Migrations: gracefully handle missing migration files.  #5857 [eli.gordon@gmail.com]

* MySQL: update test schema for MySQL 5 strict mode.  #5861 [Tom Ward]

* to_xml: correct naming of included associations.  #5831 [josh.starcher@gmail.com]

* Pushing a record onto a has_many :through sets the association's foreign key to the associate's primary key and adds it to the correct association.  #5815, #5829 [josh@hasmanythrough.com]

* Add records to has_many :through using <<, push, and concat by creating the association record. Raise if base or associate are new records since both ids are required to create the association. #build raises since you can't associate an unsaved record. #create! takes an attributes hash and creates the associated record and its association in a transaction. [Jeremy Kemper]

    # Create a tagging to associate the post and tag.
    post.tags << Tag.find_by_name('old')
    post.tags.create! :name => 'general'

    # Would have been:
    post.taggings.create!(:tag => Tag.find_by_name('finally')
    transaction do
      post.taggings.create!(:tag => Tag.create!(:name => 'general'))
    end

* Cache nil results for :included has_one associations also.  #5787 [Michael Schoen]

* Fixed a bug which would cause .save to fail after trying to access a empty has_one association on a unsaved record. [Tobias Luetke]

* Nested classes are given table names prefixed by the singular form of the parent's table name. [Jeremy Kemper]
    Example: Invoice::Lineitem is given table name invoice_lineitems

* Migrations: uniquely name multicolumn indexes so you don't have to. [Jeremy Kemper]
    # people_active_last_name_index, people_active_deactivated_at_index
    add_index    :people, [:active, :last_name]
    add_index    :people, [:active, :deactivated_at]
    remove_index :people, [:active, :last_name]
    remove_index :people, [:active, :deactivated_at]

  WARNING: backward-incompatibility. Multicolumn indexes created before this
  revision were named using the first column name only. Now they're uniquely
  named using all indexed columns.

  To remove an old multicolumn index, remove_index :table_name, :first_column

* Fix for deep includes on the same association. [richcollins@gmail.com]

* Tweak fixtures so they don't try to use a non-ActiveRecord class.  [Kevin Clark]

* Remove ActiveRecord::Base.reset since Dispatcher doesn't use it anymore.  [Rick Olson]

* Document find's :from option. Closes #5762. [andrew@redlinesoftware.com]

* PostgreSQL: autodetected sequences work correctly with multiple schemas. Rely on the schema search_path instead of explicitly qualifying the sequence name with its schema.  #5280 [guy.naor@famundo.com]

* Replace Reloadable with Reloadable::Deprecated. [Nicholas Seckar]

* Cache nil results for has_one associations so multiple calls don't call the database.  Closes #5757. [Michael A. Schoen]

* Add documentation for how to disable timestamps on a per model basis. Closes #5684. [matt@mattmargolis.net Marcel Molina Jr.] 

* Don't save has_one associations unnecessarily.  #5735 [Jonathan Viney]

* Refactor ActiveRecord::Base.reset_subclasses to #reset, and add global observer resetting.  [Rick Olson]

* Formally deprecate the deprecated finders. [Koz]

* Formally deprecate rich associations.  [Koz]

* Fixed that default timezones for new / initialize should uphold utc setting #5709 [daniluk@yahoo.com]

* Fix announcement of very long migration names.  #5722 [blake@near-time.com]

* The exists? class method should treat a string argument as an id rather than as conditions.  #5698 [jeremy@planetargon.com]

* Fixed to_xml with :include misbehaviors when invoked on array of model instances #5690 [alexkwolfe@gmail.com]

* Added support for conditions on Base.exists? #5689 [Josh Peek]. Examples:

    assert (Topic.exists?(:author_name => "David")) 
 	  assert (Topic.exists?(:author_name => "Mary", :approved => true)) 
 	  assert (Topic.exists?(["parent_id = ?", 1]))

* Schema dumper quotes date :default values. [Dave Thomas]

* Calculate sum with SQL, not Enumerable on HasManyThrough Associations. [Dan Peterson]

* Factor the attribute#{suffix} methods out of method_missing for easier extension. [Jeremy Kemper]

* Patch sql injection vulnerability when using integer or float columns. [Jamis Buck]

* Allow #count through a has_many association to accept :include.  [Dan Peterson]

* create_table rdoc: suggest :id => false for habtm join tables. [Zed Shaw]

* PostgreSQL: return array fields as strings. #4664 [Robby Russell]

* SQLServer: added tests to ensure all database statements are closed, refactored identity_insert management code to use blocks, removed update/delete rowcount code out of execute and into update/delete, changed insert to go through execute method, removed unused quoting methods, disabled pessimistic locking tests as feature is currently unsupported, fixed RakeFile to load sqlserver specific tests whether running in ado or odbc mode, fixed support for recently added decimal types, added support for limits on integer types. #5670 [Tom Ward]

* SQLServer: fix db:schema:dump case-sensitivity. #4684 [Will Rogers]

* Oracle: BigDecimal support. #5667 [schoenm@earthlink.net]

* Numeric and decimal columns map to BigDecimal instead of Float. Those with scale 0 map to Integer. #5454 [robbat2@gentoo.org, work@ashleymoran.me.uk]

* Firebird migrations support. #5337 [Ken Kunz <kennethkunz@gmail.com>]

* PostgreSQL: create/drop as postgres user. #4790 [mail@matthewpainter.co.uk, mlaster@metavillage.com]

* Update callbacks documentation. #3970 [Robby Russell <robby@planetargon.com>]

* PostgreSQL: correctly quote the ' in pk_and_sequence_for. #5462 [tietew@tietew.net]

* PostgreSQL: correctly quote microseconds in timestamps. #5641 [rick@rickbradley.com]

* Clearer has_one/belongs_to model names (account has_one :user). #5632 [matt@mattmargolis.net]

* Oracle: use nonblocking queries if allow_concurrency is set, fix pessimistic locking, don't guess date vs. time by default (set OracleAdapter.emulate_dates = true for the old behavior), adapter cleanup. #5635 [schoenm@earthlink.net]

* Fixed a few Oracle issues: Allows Oracle's odd date handling to still work consistently within #to_xml, Passes test that hardcode insert statement by dropping the :id column, Updated RUNNING_UNIT_TESTS with Oracle instructions, Corrects method signature for #exec #5294 [schoenm@earthlink.net]

* Added :group to available options for finds done on associations #5516 [mike@michaeldewey.org]

* Minor tweak to improve performance of ActiveRecord::Base#to_param.

* Observers also watch subclasses created after they are declared. #5535 [daniels@pronto.com.au]

* Removed deprecated timestamps_gmt class methods. [Jeremy Kemper]

* rake build_mysql_database grants permissions to rails@localhost. #5501 [brianegge@yahoo.com]

* PostgreSQL: support microsecond time resolution. #5492 [alex@msgpad.com]

* Add AssociationCollection#sum since the method_missing invokation has been shadowed by Enumerable#sum.

* Added find_or_initialize_by_X which works like find_or_create_by_X but doesn't save the newly instantiated record. [Sam Stephenson]

* Row locking. Provide a locking clause with the :lock finder option or true for the default "FOR UPDATE". Use the #lock! method to obtain a row lock on a single record (reloads the record with :lock => true). [Shugo Maeda]
    # Obtain an exclusive lock on person 1 so we can safely increment visits.
    Person.transaction do
      # select * from people where id=1 for update
      person = Person.find(1, :lock => true)
      person.visits += 1
      person.save!
    end

* PostgreSQL: introduce allow_concurrency option which determines whether to use blocking or asynchronous #execute. Adapters with blocking #execute will deadlock Ruby threads. The default value is ActiveRecord::Base.allow_concurrency. [Jeremy Kemper]

* Use a per-thread (rather than global) transaction mutex so you may execute concurrent transactions on separate connections. [Jeremy Kemper]

* Change AR::Base#to_param to return a String instead of a Fixnum. Closes #5320. [Nicholas Seckar]

* Use explicit delegation instead of method aliasing for AR::Base.to_param -> AR::Base.id. #5299 (skaes@web.de)

* Refactored ActiveRecord::Base.to_xml to become a delegate for XmlSerializer, which restores sanity to the mega method. This refactoring also reinstates the opinions that type="string" is redundant and ugly and nil-differentiation is not a concern of serialization [DHH]

* Added simple hash conditions to find that'll just convert hash to an AND-based condition string #5143 [hcatlin@gmail.com]. Example:

    Person.find(:all, :conditions => { :last_name => "Catlin", :status => 1 }, :limit => 2) 

...is the same as:

    Person.find(:all, :conditions => [ "last_name = ? and status = ?", "Catlin", 1 ], :limit => 2)
  
  This makes it easier to pass in the options from a form or otherwise outside.
    

* Fixed issues with BLOB limits, charsets, and booleans for Firebird #5194, #5191, #5189 [kennethkunz@gmail.com]

* Fixed usage of :limit and with_scope when the association in scope is a 1:m #5208 [alex@purefiction.net]

* Fixed migration trouble with SQLite when NOT NULL is used in the new definition #5215 [greg@lapcominc.com]

* Fixed problems with eager loading and counting on SQL Server #5212 [kajism@yahoo.com]

* Fixed that count distinct should use the selected column even when using :include #5251 [anna@wota.jp]

* Fixed that :includes merged from with_scope won't cause the same association to be loaded more than once if repetition occurs in the clauses #5253 [alex@purefiction.net]

* Allow models to override to_xml.  #4989 [Blair Zajac <blair@orcaware.com>]

* PostgreSQL: don't ignore port when host is nil since it's often used to label the domain socket.  #5247 [shimbo@is.naist.jp]

* Records and arrays of records are bound as quoted ids. [Jeremy Kemper]
    Foo.find(:all, :conditions => ['bar_id IN (?)', bars])
    Foo.find(:first, :conditions => ['bar_id = ?', bar])

* Fixed that Base.find :all, :conditions => [ "id IN (?)", collection ] would fail if collection was empty [DHH]

* Add a list of regexes assert_queries skips in the ActiveRecord test suite.  [Rick]

* Fix the has_and_belongs_to_many #create doesn't populate the join for new records.  Closes #3692 [josh@hasmanythrough.com]

* Provide Association Extensions access to the instance that the association is being accessed from.  
  Closes #4433 [josh@hasmanythrough.com]

* Update OpenBase adaterp's maintainer's email address. Closes #5176. [Derrick Spell]

* Add a quick note about :select and eagerly included associations. [Rick]

* Add docs for the :as option in has_one associations.  Closes #5144 [cdcarter@gmail.com]

* Fixed that has_many collections shouldn't load the entire association to do build or create [DHH]

* Added :allow_nil option for aggregations #5091 [ian.w.white@gmail.com]

* Fix Oracle boolean support and tests. Closes #5139. [schoenm@earthlink.net]

* create! no longer blows up when no attributes are passed and a :create scope is in effect (e.g. foo.bars.create! failed whereas foo.bars.create!({}) didn't.) [Jeremy Kemper]

* Call Inflector#demodulize on the class name when eagerly including an STI model.  Closes #5077 [info@loobmedia.com]

* Preserve MySQL boolean column defaults when changing a column in a migration. Closes #5015. [pdcawley@bofh.org.uk] 

* PostgreSQL: migrations support :limit with :integer columns by mapping limit < 4 to smallint, > 4 to bigint, and anything else to integer. #2900 [keegan@thebasement.org]

* Dates and times interpret empty strings as nil rather than 2000-01-01. #4830 [kajism@yahoo.com]

* Allow :uniq => true with has_many :through associations. [Jeremy Kemper]

* Ensure that StringIO is always available for the Schema dumper. [Marcel Molina Jr.]

* Allow AR::Base#to_xml to include methods too. Closes #4921. [johan@textdrive.com] 

* Replace superfluous name_to_class_name variant with camelize. [Marcel Molina Jr.]

* Replace alias method chaining with Module#alias_method_chain. [Marcel Molina Jr.]

* Replace Ruby's deprecated append_features in favor of included. [Marcel Molina Jr.]

* Remove duplicate fixture entry in comments.yml. Closes #4923. [Blair Zajac <blair@orcaware.com>]

* Update FrontBase adapter to check binding version. Closes #4920. [mlaster@metavillage.com] 

* New Frontbase connections don't start in auto-commit mode. Closes #4922. [mlaster@metavillage.com]

* When grouping, use the appropriate option key. [Marcel Molina Jr.]

* Only modify the sequence name in the FrontBase adapter if the FrontBase adapter is actually being used. [Marcel Molina Jr.]

* Add support for FrontBase (http://www.frontbase.com/) with a new adapter thanks to the hard work of one Mike Laster. Closes #4093. [mlaster@metavillage.com]

* Add warning about the proper way to validate the presence of a foreign key. Closes #4147. [Francois Beausoleil <francois.beausoleil@gmail.com>]

* Fix syntax error in documentation. Closes #4679. [mislav@nippur.irb.hr] 

* Add Oracle support for CLOB inserts. Closes #4748. [schoenm@earthlink.net sandra.metz@duke.edu] 

* Various fixes for sqlserver_adapter (odbc statement finishing, ado schema dumper, drop index). Closes #4831. [kajism@yahoo.com]

* Add support for :order option to with_scope. Closes #3887. [eric.daspet@survol.net]

* Prettify output of schema_dumper by making things line up. Closes #4241 [Caio  Chassot <caio@v2studio.com>]

* Make build_postgresql_databases task make databases owned by the postgres user. Closes #4790. [mlaster@metavillage.com]

* Sybase Adapter type conversion cleanup. Closes #4736. [dev@metacasa.net]

* Fix bug where calculations with long alias names return null. [Rick]

* Raise error when trying to add to a has_many :through association.  Use the Join Model instead. [Rick]

    @post.tags << @tag                  # BAD
    @post.taggings.create(:tag => @tag) # GOOD

* Allow all calculations to take the :include option, not just COUNT (closes #4840) [Rick]

* Update inconsistent migrations documentation. #4683 [machomagna@gmail.com]

* Add ActiveRecord::Errors#to_xml [Jamis Buck]

* Properly quote index names in migrations (closes #4764) [John Long]

* Fix the HasManyAssociation#count method so it uses the new ActiveRecord::Base#count syntax, while maintaining backwards compatibility.  [Rick]

* Ensure that Associations#include_eager_conditions? checks both scoped and explicit conditions [Rick]

* Associations#select_limited_ids_list adds the ORDER BY columns to the SELECT DISTINCT List for postgresql. [Rick]

* DRY up association collection reader method generation. [Marcel Molina Jr.]

* DRY up and tweak style of the validation error object. [Marcel Molina Jr.]

* Add :case_sensitive option to validates_uniqueness_of (closes #3090) [Rick]

    class Account < ActiveRecord::Base
      validates_uniqueness_of :email, :case_sensitive => false
    end

* Allow multiple association extensions with :extend option (closes #4666) [Josh Susser]

    class Account < ActiveRecord::Base
      has_many :people, :extend => [FindOrCreateByNameExtension, FindRecentExtension]
    end

    *1.15.3* (March 12th, 2007)

    * Allow a polymorphic :source for has_many :through associations. Closes #7143 [protocool] 

    * Consistently quote primary key column names.  #7763 [toolmantim]

    * Fixtures: fix YAML ordered map support.  #2665 [Manuel Holtgrewe, nfbuckley]

    * Fix has_many :through << with custom foreign keys.  #6466, #7153 [naffis, Rich Collins]


*1.15.2* (February 5th, 2007)

* Pass a range in :conditions to use the SQL BETWEEN operator.  #6974 [dcmanges]
    Student.find(:all, :conditions => { :grade => 9..12 })

* Don't create instance writer methods for class attributes. [Rick]

* When dealing with SQLite3, use the table_info pragma helper, so that the bindings can do some translation for when sqlite3 breaks incompatibly between point releases. [Jamis Buck]

* SQLServer: don't choke on strings containing 'null'.  #7083 [Jakob S]

* Consistently use LOWER() for uniqueness validations (rather than mixing with UPPER()) so the database can always use a functional index on the lowercased column.  #6495 [Si]

* MySQL: SET SQL_AUTO_IS_NULL=0 so 'where id is null' doesn't select the last inserted id.  #6778 [Jonathan Viney, timc]

* Fixtures use the table name and connection from set_fixture_class.  #7330 [Anthony Eden]

* SQLServer: quote table name in indexes query.  #2928 [keithm@infused.org]


*1.15.1* (January 17th, 2007)

* Fix nodoc breaking of adapters


*1.15.0* (January 16th, 2007)

* [DOC] clear up some ambiguity with the way has_and_belongs_to_many creates the default join table name.  #7072 [jeremymcanally]

* change_column accepts :default => nil. Skip column options for primary keys.  #6956, #7048 [dcmanges, Jeremy Kemper]

* MySQL, PostgreSQL: change_column_default quotes the default value and doesn't lose column type information.  #3987, #6664 [Jonathan Viney, manfred, altano@bigfoot.com]

* Oracle: create_table takes a :sequence_name option to override the 'tablename_seq' default.  #7000 [Michael Schoen]

* MySQL: retain SSL settings on reconnect.  #6976 [randyv2]

* SQLServer: handle [quoted] table names.  #6635 [rrich]

* acts_as_nested_set works with single-table inheritance.  #6030 [Josh Susser]

* PostgreSQL, Oracle: correctly perform eager finds with :limit and :order.  #4668, #7021 [eventualbuddha, Michael Schoen]

* Fix the Oracle adapter for serialized attributes stored in CLOBs.  Closes #6825 [mschoen, tdfowler]

* [DOCS] Apply more documentation for ActiveRecord Reflection.  Closes #4055 [Robby Russell]

* [DOCS] Document :allow_nil option of #validate_uniqueness_of. Closes #3143 [Caio Chassot]

* Bring the sybase adapter up to scratch for 1.2 release. [jsheets]

* Oracle: fix connection reset failure.  #6846 [leonlleslie]

* Subclass instantiation doesn't try to explicitly require the corresponding subclass.  #6840 [leei, Jeremy Kemper]

* fix faulty inheritance tests and that eager loading grabs the wrong inheritance column when the class of your association is an STI subclass. Closes #6859 [protocool]

* find supports :lock with :include. Check whether your database allows SELECT ... FOR UPDATE with outer joins before using.  #6764 [vitaly, Jeremy Kemper]

* Support nil and Array in :conditions => { attr => value } hashes.  #6548 [Assaf, Jeremy Kemper]
    find(:all, :conditions => { :topic_id => [1, 2, 3], :last_read => nil }

* Quote ActiveSupport::Multibyte::Chars.  #6653 [Julian Tarkhanov]

* MySQL: detect when a NOT NULL column without a default value is misreported as default ''.  Can't detect for string, text, and binary columns since '' is a legitimate default.  #6156 [simon@redhillconsulting.com.au, obrie, Jonathan Viney, Jeremy Kemper]

* validates_numericality_of uses \A \Z to ensure the entire string matches rather than ^ $ which may match one valid line of a multiline string.  #5716 [Andreas Schwarz]

* Oracle: automatically detect the primary key.  #6594 [vesaria, Michael Schoen]

* Oracle: to increase performance, prefetch 100 rows and enable similar cursor sharing. Both are configurable in database.yml.  #6607 [philbogle@gmail.com, ray.fortna@jobster.com, Michael Schoen]

* Firebird: decimal/numeric support.  #6408 [macrnic]

* Find with :include respects scoped :order.  #5850

* Dynamically generate reader methods for serialized attributes.  #6362 [Stefan Kaes]

* Deprecation: object transactions warning.  [Jeremy Kemper]

* has_one :dependent => :nullify ignores nil associates.  #6528 [janovetz, Jeremy Kemper]

* Oracle: resolve test failures, use prefetched primary key for inserts, check for null defaults, fix limited id selection for eager loading. Factor out some common methods from all adapters.  #6515 [Michael Schoen]

* Make add_column use the options hash with the Sqlite Adapter. Closes #6464 [obrie]

* Document other options available to migration's add_column. #6419 [grg]

* MySQL: all_hashes compatibility with old MysqlRes class.  #6429, #6601 [Jeremy Kemper]

* Fix has_many :through to add the appropriate conditions when going through an association using STI. Closes #5783. [Jonathan Viney]

* fix select_limited_ids_list issues in postgresql, retain current behavior in other adapters [Rick]

* Restore eager condition interpolation, document it's differences [Rick]

* Don't rollback in teardown unless a transaction was started. Don't start a transaction in create_fixtures if a transaction is started.  #6282 [Jacob Fugal, Jeremy Kemper]

* Add #delete support to has_many :through associations.  Closes #6049 [Martin Landers]

* Reverted old select_limited_ids_list postgresql fix that caused issues in mysql.  Closes #5851 [Rick]

* Removes the ability for eager loaded conditions to be interpolated, since there is no model instance to use as a context for interpolation. #5553 [turnip@turnipspatch.com]

* Added timeout option to SQLite3 configurations to deal more gracefully with SQLite3::BusyException, now the connection can instead retry for x seconds to see if the db clears up before throwing that exception #6126 [wreese@gmail.com]

* Added update_attributes! which uses save! to raise an exception if a validation error prevents saving #6192 [jonathan]

* Deprecated add_on_boundary_breaking (use validates_length_of instead) #6292 [BobSilva]

* The has_many create method works with polymorphic associations.  #6361 [Dan Peterson]

* MySQL: introduce Mysql::Result#all_hashes to support further optimization.  #5581 [Stefan Kaes]

* save! shouldn't validate twice.  #6324 [maiha, Bob Silva]

* Association collections have an _ids reader method to match the existing writer for collection_select convenience (e.g. employee.task_ids). The writer method skips blank ids so you can safely do @employee.task_ids = params[:tasks] without checking every time for an empty list or blank values.  #1887, #5780 [Michael Schuerig]

* Add an attribute reader method for ActiveRecord::Base.observers [Rick Olson]

* Deprecation: count class method should be called with an options hash rather than two args for conditions and joins.  #6287 [Bob Silva]

* has_one associations with a nil target may be safely marshaled.  #6279 [norbauer, Jeremy Kemper]

* Duplicate the hash provided to AR::Base#to_xml to prevent unexpected side effects [Koz]

* Add a :namespace option to  AR::Base#to_xml [Koz]

* Deprecation tests. Remove warnings for dynamic finders and for the foo_count method if it's also an attribute. [Jeremy Kemper]

* Mock Time.now for more accurate Touch mixin tests.  #6213 [Dan Peterson]

* Improve yaml fixtures error reporting.  #6205 [Bruce Williams]

* Rename AR::Base#quote so people can use that name in their models. #3628 [Koz]

* Add deprecation warning for inferred foreign key. #6029 [Josh Susser]

* Fixed the Ruby/MySQL adapter we ship with Active Record to work with the new authentication handshake that was introduced in MySQL 4.1, along with the other protocol changes made at that time #5723 [jimw@mysql.com]

* Deprecation: use :dependent => :delete_all rather than :exclusively_dependent => true.  #6024 [Josh Susser]

* Optimistic locking: gracefully handle nil versions, treat as zero.  #5908 [Tom Ward]

* to_xml: the :methods option works on arrays of records.  #5845 [Josh Starcher]

* has_many :through conditions are sanitized by the associating class.  #5971 [martin.emde@gmail.com]

* Fix spurious newlines and spaces in AR::Base#to_xml output [Jamis Buck]

* has_one supports the :dependent => :delete option which skips the typical callback chain and deletes the associated object directly from the database.  #5927 [Chris Mear, Jonathan Viney]

* Nested subclasses are not prefixed with the parent class' table_name since they should always use the base class' table_name.  #5911 [Jonathan Viney]

* SQLServer: work around bug where some unambiguous date formats are not correctly identified if the session language is set to german.  #5894 [Tom Ward, kruth@bfpi]

* Clashing type columns due to a sloppy join shouldn't wreck single-table inheritance.  #5838 [Kevin Clark]

* Fixtures: correct escaping of \n and \r.  #5859 [evgeny.zislis@gmail.com]

* Migrations: gracefully handle missing migration files.  #5857 [eli.gordon@gmail.com]

* MySQL: update test schema for MySQL 5 strict mode.  #5861 [Tom Ward]

* to_xml: correct naming of included associations.  #5831 [josh.starcher@gmail.com]

* Pushing a record onto a has_many :through sets the association's foreign key to the associate's primary key and adds it to the correct association.  #5815, #5829 [josh@hasmanythrough.com]

* Add records to has_many :through using <<, push, and concat by creating the association record. Raise if base or associate are new records since both ids are required to create the association. #build raises since you can't associate an unsaved record. #create! takes an attributes hash and creates the associated record and its association in a transaction. [Jeremy Kemper]

    # Create a tagging to associate the post and tag.
    post.tags << Tag.find_by_name('old')
    post.tags.create! :name => 'general'

    # Would have been:
    post.taggings.create!(:tag => Tag.find_by_name('finally')
    transaction do
      post.taggings.create!(:tag => Tag.create!(:name => 'general'))
    end

* Cache nil results for :included has_one associations also.  #5787 [Michael Schoen]

* Fixed a bug which would cause .save to fail after trying to access a empty has_one association on a unsaved record. [Tobias Luetke]

* Nested classes are given table names prefixed by the singular form of the parent's table name. [Jeremy Kemper]
    Example: Invoice::Lineitem is given table name invoice_lineitems

* Migrations: uniquely name multicolumn indexes so you don't have to. [Jeremy Kemper]
    # people_active_last_name_index, people_active_deactivated_at_index
    add_index    :people, [:active, :last_name]
    add_index    :people, [:active, :deactivated_at]
    remove_index :people, [:active, :last_name]
    remove_index :people, [:active, :deactivated_at]

  WARNING: backward-incompatibility. Multicolumn indexes created before this
  revision were named using the first column name only. Now they're uniquely
  named using all indexed columns.

  To remove an old multicolumn index, remove_index :table_name, :first_column

* Fix for deep includes on the same association. [richcollins@gmail.com]

* Tweak fixtures so they don't try to use a non-ActiveRecord class.  [Kevin Clark]

* Remove ActiveRecord::Base.reset since Dispatcher doesn't use it anymore.  [Rick Olson]

* PostgreSQL: autodetected sequences work correctly with multiple schemas. Rely on the schema search_path instead of explicitly qualifying the sequence name with its schema.  #5280 [guy.naor@famundo.com]

* Replace Reloadable with Reloadable::Deprecated. [Nicholas Seckar]

* Cache nil results for has_one associations so multiple calls don't call the database.  Closes #5757. [Michael A. Schoen]

* Don't save has_one associations unnecessarily.  #5735 [Jonathan Viney]

* Refactor ActiveRecord::Base.reset_subclasses to #reset, and add global observer resetting.  [Rick Olson]

* Formally deprecate the deprecated finders. [Koz]

* Formally deprecate rich associations.  [Koz]

* Fixed that default timezones for new / initialize should uphold utc setting #5709 [daniluk@yahoo.com]

* Fix announcement of very long migration names.  #5722 [blake@near-time.com]

* The exists? class method should treat a string argument as an id rather than as conditions.  #5698 [jeremy@planetargon.com]

* Fixed to_xml with :include misbehaviors when invoked on array of model instances #5690 [alexkwolfe@gmail.com]

* Added support for conditions on Base.exists? #5689 [Josh Peek]. Examples:

    assert (Topic.exists?(:author_name => "David")) 
 	  assert (Topic.exists?(:author_name => "Mary", :approved => true)) 
 	  assert (Topic.exists?(["parent_id = ?", 1]))

* Schema dumper quotes date :default values. [Dave Thomas]

* Calculate sum with SQL, not Enumerable on HasManyThrough Associations. [Dan Peterson]

* Factor the attribute#{suffix} methods out of method_missing for easier extension. [Jeremy Kemper]

* Patch sql injection vulnerability when using integer or float columns. [Jamis Buck]

* Allow #count through a has_many association to accept :include.  [Dan Peterson]

* create_table rdoc: suggest :id => false for habtm join tables. [Zed Shaw]

* PostgreSQL: return array fields as strings. #4664 [Robby Russell]

* SQLServer: added tests to ensure all database statements are closed, refactored identity_insert management code to use blocks, removed update/delete rowcount code out of execute and into update/delete, changed insert to go through execute method, removed unused quoting methods, disabled pessimistic locking tests as feature is currently unsupported, fixed RakeFile to load sqlserver specific tests whether running in ado or odbc mode, fixed support for recently added decimal types, added support for limits on integer types. #5670 [Tom Ward]

* SQLServer: fix db:schema:dump case-sensitivity. #4684 [Will Rogers]

* Oracle: BigDecimal support. #5667 [schoenm@earthlink.net]

* Numeric and decimal columns map to BigDecimal instead of Float. Those with scale 0 map to Integer. #5454 [robbat2@gentoo.org, work@ashleymoran.me.uk]

* Firebird migrations support. #5337 [Ken Kunz <kennethkunz@gmail.com>]

* PostgreSQL: create/drop as postgres user. #4790 [mail@matthewpainter.co.uk, mlaster@metavillage.com]

* PostgreSQL: correctly quote the ' in pk_and_sequence_for. #5462 [tietew@tietew.net]

* PostgreSQL: correctly quote microseconds in timestamps. #5641 [rick@rickbradley.com]

* Clearer has_one/belongs_to model names (account has_one :user). #5632 [matt@mattmargolis.net]

* Oracle: use nonblocking queries if allow_concurrency is set, fix pessimistic locking, don't guess date vs. time by default (set OracleAdapter.emulate_dates = true for the old behavior), adapter cleanup. #5635 [schoenm@earthlink.net]

* Fixed a few Oracle issues: Allows Oracle's odd date handling to still work consistently within #to_xml, Passes test that hardcode insert statement by dropping the :id column, Updated RUNNING_UNIT_TESTS with Oracle instructions, Corrects method signature for #exec #5294 [schoenm@earthlink.net]

* Added :group to available options for finds done on associations #5516 [mike@michaeldewey.org]

* Observers also watch subclasses created after they are declared. #5535 [daniels@pronto.com.au]

* Removed deprecated timestamps_gmt class methods. [Jeremy Kemper]

* rake build_mysql_database grants permissions to rails@localhost. #5501 [brianegge@yahoo.com]

* PostgreSQL: support microsecond time resolution. #5492 [alex@msgpad.com]

* Add AssociationCollection#sum since the method_missing invokation has been shadowed by Enumerable#sum.

* Added find_or_initialize_by_X which works like find_or_create_by_X but doesn't save the newly instantiated record. [Sam Stephenson]

* Row locking. Provide a locking clause with the :lock finder option or true for the default "FOR UPDATE". Use the #lock! method to obtain a row lock on a single record (reloads the record with :lock => true). [Shugo Maeda]
    # Obtain an exclusive lock on person 1 so we can safely increment visits.
    Person.transaction do
      # select * from people where id=1 for update
      person = Person.find(1, :lock => true)
      person.visits += 1
      person.save!
    end

* PostgreSQL: introduce allow_concurrency option which determines whether to use blocking or asynchronous #execute. Adapters with blocking #execute will deadlock Ruby threads. The default value is ActiveRecord::Base.allow_concurrency. [Jeremy Kemper]

* Use a per-thread (rather than global) transaction mutex so you may execute concurrent transactions on separate connections. [Jeremy Kemper]

* Change AR::Base#to_param to return a String instead of a Fixnum. Closes #5320. [Nicholas Seckar]

* Use explicit delegation instead of method aliasing for AR::Base.to_param -> AR::Base.id. #5299 (skaes@web.de)

* Refactored ActiveRecord::Base.to_xml to become a delegate for XmlSerializer, which restores sanity to the mega method. This refactoring also reinstates the opinions that type="string" is redundant and ugly and nil-differentiation is not a concern of serialization [DHH]

* Added simple hash conditions to find that'll just convert hash to an AND-based condition string #5143 [hcatlin@gmail.com]. Example:

    Person.find(:all, :conditions => { :last_name => "Catlin", :status => 1 }, :limit => 2) 

...is the same as:

    Person.find(:all, :conditions => [ "last_name = ? and status = ?", "Catlin", 1 ], :limit => 2)

  This makes it easier to pass in the options from a form or otherwise outside.


* Fixed issues with BLOB limits, charsets, and booleans for Firebird #5194, #5191, #5189 [kennethkunz@gmail.com]

* Fixed usage of :limit and with_scope when the association in scope is a 1:m #5208 [alex@purefiction.net]

* Fixed migration trouble with SQLite when NOT NULL is used in the new definition #5215 [greg@lapcominc.com]

* Fixed problems with eager loading and counting on SQL Server #5212 [kajism@yahoo.com]

* Fixed that count distinct should use the selected column even when using :include #5251 [anna@wota.jp]

* Fixed that :includes merged from with_scope won't cause the same association to be loaded more than once if repetition occurs in the clauses #5253 [alex@purefiction.net]

* Allow models to override to_xml.  #4989 [Blair Zajac <blair@orcaware.com>]

* PostgreSQL: don't ignore port when host is nil since it's often used to label the domain socket.  #5247 [shimbo@is.naist.jp]

* Records and arrays of records are bound as quoted ids. [Jeremy Kemper]
    Foo.find(:all, :conditions => ['bar_id IN (?)', bars])
    Foo.find(:first, :conditions => ['bar_id = ?', bar])

* Fixed that Base.find :all, :conditions => [ "id IN (?)", collection ] would fail if collection was empty [DHH]

* Add a list of regexes assert_queries skips in the ActiveRecord test suite.  [Rick]

* Fix the has_and_belongs_to_many #create doesn't populate the join for new records.  Closes #3692 [josh@hasmanythrough.com]

* Provide Association Extensions access to the instance that the association is being accessed from.  
  Closes #4433 [josh@hasmanythrough.com]

* Update OpenBase adaterp's maintainer's email address. Closes #5176. [Derrick Spell]

* Add a quick note about :select and eagerly included associations. [Rick]

* Add docs for the :as option in has_one associations.  Closes #5144 [cdcarter@gmail.com]

* Fixed that has_many collections shouldn't load the entire association to do build or create [DHH]

* Added :allow_nil option for aggregations #5091 [ian.w.white@gmail.com]

* Fix Oracle boolean support and tests. Closes #5139. [schoenm@earthlink.net]

* create! no longer blows up when no attributes are passed and a :create scope is in effect (e.g. foo.bars.create! failed whereas foo.bars.create!({}) didn't.) [Jeremy Kemper]

* Call Inflector#demodulize on the class name when eagerly including an STI model.  Closes #5077 [info@loobmedia.com]

* Preserve MySQL boolean column defaults when changing a column in a migration. Closes #5015. [pdcawley@bofh.org.uk] 

* PostgreSQL: migrations support :limit with :integer columns by mapping limit < 4 to smallint, > 4 to bigint, and anything else to integer. #2900 [keegan@thebasement.org]

* Dates and times interpret empty strings as nil rather than 2000-01-01. #4830 [kajism@yahoo.com]

* Allow :uniq => true with has_many :through associations. [Jeremy Kemper]

* Ensure that StringIO is always available for the Schema dumper. [Marcel Molina Jr.]

* Allow AR::Base#to_xml to include methods too. Closes #4921. [johan@textdrive.com] 

* Remove duplicate fixture entry in comments.yml. Closes #4923. [Blair Zajac <blair@orcaware.com>]

* When grouping, use the appropriate option key. [Marcel Molina Jr.]

* Add support for FrontBase (http://www.frontbase.com/) with a new adapter thanks to the hard work of one Mike Laster. Closes #4093. [mlaster@metavillage.com]

* Add warning about the proper way to validate the presence of a foreign key. Closes #4147. [Francois Beausoleil <francois.beausoleil@gmail.com>]

* Fix syntax error in documentation. Closes #4679. [mislav@nippur.irb.hr] 

* Add Oracle support for CLOB inserts. Closes #4748. [schoenm@earthlink.net sandra.metz@duke.edu] 

* Various fixes for sqlserver_adapter (odbc statement finishing, ado schema dumper, drop index). Closes #4831. [kajism@yahoo.com]

* Add support for :order option to with_scope. Closes #3887. [eric.daspet@survol.net]

* Prettify output of schema_dumper by making things line up. Closes #4241 [Caio  Chassot <caio@v2studio.com>]

* Make build_postgresql_databases task make databases owned by the postgres user. Closes #4790. [mlaster@metavillage.com]

* Sybase Adapter type conversion cleanup. Closes #4736. [dev@metacasa.net]

* Fix bug where calculations with long alias names return null. [Rick]

* Raise error when trying to add to a has_many :through association.  Use the Join Model instead. [Rick]

    @post.tags << @tag                  # BAD
    @post.taggings.create(:tag => @tag) # GOOD

* Allow all calculations to take the :include option, not just COUNT (closes #4840) [Rick]

* Add ActiveRecord::Errors#to_xml [Jamis Buck]

* Properly quote index names in migrations (closes #4764) [John Long]

* Fix the HasManyAssociation#count method so it uses the new ActiveRecord::Base#count syntax, while maintaining backwards compatibility.  [Rick]

* Ensure that Associations#include_eager_conditions? checks both scoped and explicit conditions [Rick]

* Associations#select_limited_ids_list adds the ORDER BY columns to the SELECT DISTINCT List for postgresql. [Rick]

* Add :case_sensitive option to validates_uniqueness_of (closes #3090) [Rick]

    class Account < ActiveRecord::Base
      validates_uniqueness_of :email, :case_sensitive => false
    end

* Allow multiple association extensions with :extend option (closes #4666) [Josh Susser]

    class Account < ActiveRecord::Base
      has_many :people, :extend => [FindOrCreateByNameExtension, FindRecentExtension]
    end


*1.14.4* (August 8th, 2006)

* Add warning about the proper way to validate the presence of a foreign key.  #4147 [Francois Beausoleil <francois.beausoleil@gmail.com>]

* Fix syntax error in documentation. #4679 [mislav@nippur.irb.hr] 

* Update inconsistent migrations documentation. #4683 [machomagna@gmail.com]


*1.14.3* (June 27th, 2006)

* Fix announcement of very long migration names.  #5722 [blake@near-time.com]

* Update callbacks documentation. #3970 [Robby Russell <robby@planetargon.com>]

* Properly quote index names in migrations (closes #4764) [John Long]

* Ensure that Associations#include_eager_conditions? checks both scoped and explicit conditions [Rick]

* Associations#select_limited_ids_list adds the ORDER BY columns to the SELECT DISTINCT List for postgresql. [Rick]


*1.14.2* (April 9th, 2006)

* Fixed calculations for the Oracle Adapter (closes #4626) [Michael Schoen]


*1.14.1* (April 6th, 2006)

* Fix type_name_with_module to handle type names that begin with '::'. Closes #4614. [Nicholas Seckar]

* Fixed that that multiparameter assignment doesn't work with aggregations (closes #4620) [Lars Pind]

* Enable Limit/Offset in Calculations (closes #4558) [lmarlow@yahoo.com]

* Fixed that loading including associations returns all results if Load IDs For Limited Eager Loading returns none (closes #4528) [Rick]

* Fixed HasManyAssociation#find bugs when :finder_sql is set #4600 [lagroue@free.fr]

* Allow AR::Base#respond_to? to behave when @attributes is nil [zenspider]

* Support eager includes when going through a polymorphic has_many association. [Rick]

* Added support for eagerly including polymorphic has_one associations. (closes #4525) [Rick]

    class Post < ActiveRecord::Base
      has_one :tagging, :as => :taggable
    end

    Post.find :all, :include => :tagging

* Added descriptive error messages for invalid has_many :through associations: going through :has_one or :has_and_belongs_to_many [Rick]

* Added support for going through a polymorphic has_many association: (closes #4401) [Rick]

    class PhotoCollection < ActiveRecord::Base
      has_many :photos, :as => :photographic
      belongs_to :firm
    end

    class Firm < ActiveRecord::Base
      has_many :photo_collections
      has_many :photos, :through => :photo_collections
    end

* Multiple fixes and optimizations in PostgreSQL adapter, allowing ruby-postgres gem to work properly. [ruben.nine@gmail.com]

* Fixed that AssociationCollection#delete_all should work even if the records of the association are not loaded yet. [Florian Weber]

* Changed those private ActiveRecord methods to take optional third argument :auto instead of nil for performance optimizations.  (closes #4456) [Stefan]

* Private ActiveRecord methods add_limit!, add_joins!, and add_conditions! take an OPTIONAL third argument 'scope' (closes #4456) [Rick]

* DEPRECATED: Using additional attributes on has_and_belongs_to_many associations. Instead upgrade your association to be a real join model [DHH]

* Fixed that records returned from has_and_belongs_to_many associations with additional attributes should be marked as read only (fixes #4512) [DHH]

* Do not implicitly mark recordss of has_many :through as readonly but do mark habtm records as readonly (eventually only on join tables without rich attributes). [Marcel Mollina Jr.]

* Fixed broken OCIAdapter #4457 [schoenm@earthlink.net]


*1.14.0* (March 27th, 2006)

* Replace 'rescue Object' with a finer grained rescue. Closes #4431. [Nicholas Seckar]

* Fixed eager loading so that an aliased table cannot clash with a has_and_belongs_to_many join table [Rick]

* Add support for :include to with_scope [andrew@redlinesoftware.com]

* Support the use of public synonyms with the Oracle adapter; required ruby-oci8 v0.1.14 #4390 [schoenm@earthlink.net]

* Change periods (.) in table aliases to _'s.  Closes #4251 [jeff@ministrycentered.com]

* Changed has_and_belongs_to_many join to INNER JOIN for Mysql 3.23.x.  Closes #4348 [Rick]

* Fixed issue that kept :select options from being scoped [Rick]

* Fixed db_schema_import when binary types are present #3101 [DHH]

* Fixed that MySQL enums should always be returned as strings #3501 [DHH]

* Change has_many :through to use the :source option to specify the source association.  :class_name is now ignored. [Rick Olson]

    class Connection < ActiveRecord::Base
      belongs_to :user
      belongs_to :channel
    end

    class Channel < ActiveRecord::Base
      has_many :connections
      has_many :contacts, :through => :connections, :class_name => 'User' # OLD
      has_many :contacts, :through => :connections, :source => :user      # NEW
    end

* Fixed DB2 adapter so nullable columns will be determines correctly now and quotes from column default values will be removed #4350 [contact@maik-schmidt.de]

* Allow overriding of find parameters in scoped has_many :through calls [Rick Olson]

  In this example, :include => false disables the default eager association from loading.  :select changes the standard
  select clause.  :joins specifies a join that is added to the end of the has_many :through query.

    class Post < ActiveRecord::Base
      has_many :tags, :through => :taggings, :include => :tagging do
        def add_joins_and_select
          find :all, :select => 'tags.*, authors.id as author_id', :include => false,
            :joins => 'left outer join posts on taggings.taggable_id = posts.id left outer join authors on posts.author_id = authors.id'
        end
      end
    end

* Fixed that schema changes while the database was open would break any connections to a SQLite database (now we reconnect if that error is throw) [DHH]

* Don't classify the has_one class when eager loading, it is already singular. Add tests. (closes #4117) [jonathan@bluewire.net.nz]

* Quit ignoring default :include options in has_many :through calls [Mark James]

* Allow has_many :through associations to find the source association by setting a custom class (closes #4307) [jonathan@bluewire.net.nz]

* Eager Loading support added for has_many :through => :has_many associations (see below).  [Rick Olson]

* Allow has_many :through to work on has_many associations (closes #3864) [sco@scottraymond.net]  Example:

    class Firm < ActiveRecord::Base
      has_many :clients
      has_many :invoices, :through => :clients
    end

    class Client < ActiveRecord::Base
      belongs_to :firm
      has_many   :invoices
    end

    class Invoice < ActiveRecord::Base
      belongs_to :client
    end

* Raise error when trying to select many polymorphic objects with has_many :through or :include (closes #4226) [josh@hasmanythrough.com]

* Fixed has_many :through to include :conditions set on the :through association. closes #4020 [jonathan@bluewire.net.nz]

* Fix that has_many :through honors the foreign key set by the belongs_to association in the join model (closes #4259) [andylien@gmail.com / Rick]

* SQL Server adapter gets some love #4298 [rtomayko@gmail.com]

* Added OpenBase database adapter that builds on top of the http://www.spice-of-life.net/ruby-openbase/ driver. All functionality except LIMIT/OFFSET is supported #3528 [derrickspell@cdmplus.com]

* Rework table aliasing to account for truncated table aliases.  Add smarter table aliasing when doing eager loading of STI associations. This allows you to use the association name in the order/where clause. [Jonathan Viney / Rick Olson] #4108 Example (SpecialComment is using STI):

    Author.find(:all, :include => { :posts => :special_comments }, :order => 'special_comments.body')

* Add AbstractAdapter#table_alias_for to create table aliases according to the rules of the current adapter. [Rick]

* Provide access to the underlying database connection through Adapter#raw_connection. Enables the use of db-specific methods without complicating the adapters. #2090 [Koz]

* Remove broken attempts at handling columns with a default of 'now()' in the postgresql adapter. #2257 [Koz]

* Added connection#current_database that'll return of the current database (only works in MySQL, SQL Server, and Oracle so far -- please help implement for the rest of the adapters) #3663 [Tom ward]

* Fixed that Migration#execute would have the table name prefix appended to its query #4110 [mark.imbriaco@pobox.com]

* Make all tinyint(1) variants act like boolean in mysql (tinyint(1) unsigned, etc.) [Jamis Buck]

* Use association's :conditions when eager loading. [jeremyevans0@gmail.com] #4144

* Alias the has_and_belongs_to_many join table on eager includes. #4106 [jeremyevans0@gmail.com]

  This statement would normally error because the projects_developers table is joined twice, and therefore joined_on would be ambiguous.

    Developer.find(:all, :include => {:projects => :developers}, :conditions => 'join_project_developers.joined_on IS NOT NULL')

* Oracle adapter gets some love #4230 [schoenm@earthlink.net]

    * Changes :text to CLOB rather than BLOB [Moses Hohman]
    * Fixes an issue with nil numeric length/scales (several)
    * Implements support for XMLTYPE columns [wilig / Kubo Takehiro]
    * Tweaks a unit test to get it all green again
    * Adds support for #current_database

* Added Base.abstract_class? that marks which classes are not part of the Active Record hierarchy #3704 [Rick Olson]

    class CachedModel < ActiveRecord::Base
      self.abstract_class = true
    end

    class Post < CachedModel
    end

    CachedModel.abstract_class?
    => true

    Post.abstract_class?
    => false

    Post.base_class
    => Post

    Post.table_name
    => 'posts'

* Allow :dependent options to be used with polymorphic joins. #3820 [Rick Olson]

    class Foo < ActiveRecord::Base
      has_many :attachments, :as => :attachable, :dependent => :delete_all
    end

* Nicer error message on has_many :through when :through reflection can not be found. #4042 [court3nay@gmail.com]

* Upgrade to Transaction::Simple 1.3 [Jamis Buck]

* Catch FixtureClassNotFound when using instantiated fixtures on a fixture that has no ActiveRecord model [Rick Olson]

* Allow ordering of calculated results and/or grouped fields in calculations [solo@gatelys.com]

* Make ActiveRecord::Base#save! return true instead of nil on success.  #4173 [johan@johansorensen.com]

* Dynamically set allow_concurrency.  #4044 [Stefan Kaes]

* Added Base#to_xml that'll turn the current record into a XML representation [DHH]. Example:

    topic.to_xml

  ...returns:

    <?xml version="1.0" encoding="UTF-8"?>
    <topic>
      <title>The First Topic</title>
      <author-name>David</author-name>
      <id type="integer">1</id>
      <approved type="boolean">false</approved>
      <replies-count type="integer">0</replies-count>
      <bonus-time type="datetime">2000-01-01 08:28:00</bonus-time>
      <written-on type="datetime">2003-07-16 09:28:00</written-on>
      <content>Have a nice day</content>
      <author-email-address>david@loudthinking.com</author-email-address>
      <parent-id></parent-id>
      <last-read type="date">2004-04-15</last-read>
    </topic>

  ...and you can configure with:

    topic.to_xml(:skip_instruct => true, :except => [ :id, bonus_time, :written_on, replies_count ])

  ...that'll return:

    <topic>
      <title>The First Topic</title>
      <author-name>David</author-name>
      <approved type="boolean">false</approved>
      <content>Have a nice day</content>
      <author-email-address>david@loudthinking.com</author-email-address>
      <parent-id></parent-id>
      <last-read type="date">2004-04-15</last-read>
    </topic>

  You can even do load first-level associations as part of the document:

    firm.to_xml :include => [ :account, :clients ]

  ...that'll return something like:

    <?xml version="1.0" encoding="UTF-8"?>
    <firm>
      <id type="integer">1</id>
      <rating type="integer">1</rating>
      <name>37signals</name>
      <clients>
        <client>
          <rating type="integer">1</rating>
          <name>Summit</name>
        </client>
        <client>
          <rating type="integer">1</rating>
          <name>Microsoft</name>
        </client>
      </clients>
      <account>
        <id type="integer">1</id>
        <credit-limit type="integer">50</credit-limit>
      </account>
    </firm>  

* Allow :counter_cache to take a column name for custom counter cache columns [Jamis Buck]

* Documentation fixes for :dependent [robby@planetargon.com]

* Stop the MySQL adapter crashing when views are present. #3782 [Jonathan Viney]

* Don't classify the belongs_to class, it is already singular #4117 [keithm@infused.org]

* Allow set_fixture_class to take Classes instead of strings for a class in a module.  Raise FixtureClassNotFound if a fixture can't load.  [Rick Olson]

* Fix quoting of inheritance column for STI eager loading #4098 [Jonathan Viney <jonathan@bluewire.net.nz>]

* Added smarter table aliasing for eager associations for multiple self joins #3580 [Rick Olson]

    * The first time a table is referenced in a join, no alias is used.
    * After that, the parent class name and the reflection name are used.

        Tree.find(:all, :include => :children) # LEFT OUTER JOIN trees AS tree_children ...

    * Any additional join references get a numerical suffix like '_2', '_3', etc.

* Fixed eager loading problems with single-table inheritance #3580 [Rick Olson]. Post.find(:all, :include => :special_comments) now returns all posts, and any special comments that the posts may have. And made STI work with has_many :through and polymorphic belongs_to.

* Added cascading eager loading that allows for queries like Author.find(:all, :include=> { :posts=> :comments }), which will fetch all authors, their posts, and the comments belonging to those posts in a single query (using LEFT OUTER JOIN) #3913 [anna@wota.jp]. Examples:

    # cascaded in two levels
    >> Author.find(:all, :include=>{:posts=>:comments})
    => authors
         +- posts
              +- comments

    # cascaded in two levels and normal association
    >> Author.find(:all, :include=>[{:posts=>:comments}, :categorizations])
    => authors
         +- posts
              +- comments
         +- categorizations

    # cascaded in two levels with two has_many associations
    >> Author.find(:all, :include=>{:posts=>[:comments, :categorizations]})
    => authors
         +- posts
              +- comments
              +- categorizations

    # cascaded in three levels
    >> Company.find(:all, :include=>{:groups=>{:members=>{:favorites}}})
    => companies
         +- groups
              +- members
                   +- favorites

* Make counter cache work when replacing an association #3245 [eugenol@gmail.com]

* Make migrations verbose [Jamis Buck]

* Make counter_cache work with polymorphic belongs_to [Jamis Buck]

* Fixed that calling HasOneProxy#build_model repeatedly would cause saving to happen #4058 [anna@wota.jp]

* Added Sybase database adapter that relies on the Sybase Open Client bindings (see http://raa.ruby-lang.org/project/sybase-ctlib) #3765 [John Sheets]. It's almost completely Active Record compliant (including migrations), but has the following caveats:

    * Does not support DATE SQL column types; use DATETIME instead.
    * Date columns on HABTM join tables are returned as String, not Time.
    * Insertions are potentially broken for :polymorphic join tables
    * BLOB column access not yet fully supported

* Clear stale, cached connections left behind by defunct threads. [Jeremy Kemper]

* CHANGED DEFAULT: set ActiveRecord::Base.allow_concurrency to false.  Most AR usage is in single-threaded applications. [Jeremy Kemper]

* Renamed the "oci" adapter to "oracle", but kept the old name as an alias #4017 [schoenm@earthlink.net]

* Fixed that Base.save should always return false if the save didn't succeed, including if it has halted by before_save's #1861, #2477 [DHH]

* Speed up class -> connection caching and stale connection verification.  #3979 [Stefan Kaes]

* Add set_fixture_class to allow the use of table name accessors with models which use set_table_name. [Kevin Clark]

* Added that fixtures to placed in subdirectories of the main fixture files are also loaded #3937 [dblack@wobblini.net]

* Define attribute query methods to avoid method_missing calls. #3677 [jonathan@bluewire.net.nz]

* ActiveRecord::Base.remove_connection explicitly closes database connections and doesn't corrupt the connection cache. Introducing the disconnect! instance method for the PostgreSQL, MySQL, and SQL Server adapters; implementations for the others are welcome.  #3591 [Simon Stapleton, Tom Ward]

* Added support for nested scopes #3407 [anna@wota.jp]. Examples:

    Developer.with_scope(:find => { :conditions => "salary > 10000", :limit => 10 }) do
      Developer.find(:all)     # => SELECT * FROM developers WHERE (salary > 10000) LIMIT 10

      # inner rule is used. (all previous parameters are ignored)
      Developer.with_exclusive_scope(:find => { :conditions => "name = 'Jamis'" }) do
        Developer.find(:all)   # => SELECT * FROM developers WHERE (name = 'Jamis')
      end

      # parameters are merged
      Developer.with_scope(:find => { :conditions => "name = 'Jamis'" }) do
        Developer.find(:all)   # => SELECT * FROM developers WHERE (( salary > 10000 ) AND ( name = 'Jamis' )) LIMIT 10
      end
    end

* Fixed db2 connection with empty user_name and auth options #3622 [phurley@gmail.com]

* Fixed validates_length_of to work on UTF-8 strings by using characters instead of bytes #3699 [Masao Mutoh]

* Fixed that reflections would bleed across class boundaries in single-table inheritance setups #3796 [lars@pind.com]

* Added calculations: Base.count, Base.average, Base.sum, Base.minimum, Base.maxmium, and the generic Base.calculate. All can be used with :group and :having. Calculations and statitics need no longer require custom SQL. #3958 [Rick Olson]. Examples:

    Person.average :age
    Person.minimum :age
    Person.maximum :age
    Person.sum :salary, :group => :last_name

* Renamed Errors#count to Errors#size but kept an alias for the old name (and included an alias for length too) #3920 [contact@lukeredpath.co.uk]

* Reflections don't attempt to resolve module nesting of association classes. Simplify type computation. [Jeremy Kemper]

* Improved the Oracle OCI Adapter with better performance for column reflection (from #3210), fixes to migrations (from #3476 and #3742), tweaks to unit tests (from #3610), and improved documentation (from #2446) #3879 [Aggregated by schoenm@earthlink.net]

* Fixed that the schema_info table used by ActiveRecord::Schema.define should respect table pre- and suffixes #3834 [rubyonrails@atyp.de]

* Added :select option to Base.count that'll allow you to select something else than * to be counted on. Especially important for count queries using DISTINCT #3839 [skaes]

* Correct syntax error in mysql DDL,  and make AAACreateTablesTest run first [Bob Silva]

* Allow :include to be used with has_many :through associations #3611 [Michael Schoen]

* PostgreSQL: smarter schema dumps using pk_and_sequence_for(table).  #2920 [Blair Zajac]

* SQLServer: more compatible limit/offset emulation.  #3779 [Tom Ward]

* Polymorphic join support for has_one associations (has_one :foo, :as => :bar)  #3785 [Rick Olson]

* PostgreSQL: correctly parse negative integer column defaults.  #3776 [bellis@deepthought.org]

* Fix problems with count when used with :include [Jeremy Hopple and Kevin Clark]

* ActiveRecord::RecordInvalid now states which validations failed in its default error message [Tobias Luetke]

* Using AssociationCollection#build with arrays of hashes should call build, not create [DHH]

* Remove definition of reloadable? from ActiveRecord::Base to make way for new Reloadable code. [Nicholas Seckar]

* Fixed schema handling for DB2 adapter that didn't work: an initial schema could be set, but it wasn't used when getting tables and indexes #3678 [Maik Schmidt]

* Support the :column option for remove_index with the PostgreSQL adapter. #3661 [shugo@ruby-lang.org]

* Add documentation for add_index and remove_index. #3600 [Manfred Stienstra <m.stienstra@fngtps.com>]

* If the OCI library is not available, raise an exception indicating as much. #3593 [schoenm@earthlink.net]

* Add explicit :order in finder tests as postgresql orders results differently by default. #3577. [Rick Olson]

* Make dynamic finders honor additional passed in :conditions. #3569 [Oleg Pudeyev <pudeyo@rpi.edu>, Marcel Molina Jr.]

* Show a meaningful error when the DB2 adapter cannot be loaded due to missing dependencies. [Nicholas Seckar]

* Make .count work for has_many associations with multi line finder sql [schoenm@earthlink.net]

* Add AR::Base.base_class for querying the ancestor AR::Base subclass [Jamis Buck]

* Allow configuration of the column used for optimistic locking [wilsonb@gmail.com]

* Don't hardcode 'id' in acts as list.  [ror@philippeapril.com]

* Fix date errors for SQLServer in association tests. #3406 [kevin.clark@gmal.com]

* Escape database name in MySQL adapter when creating and dropping databases. #3409 [anna@wota.jp]

* Disambiguate table names for columns in validates_uniquness_of's WHERE clause. #3423 [alex.borovsky@gmail.com]

* .with_scope imposed create parameters now bypass attr_protected [Tobias Luetke]

* Don't raise an exception when there are more keys than there are named bind variables when sanitizing conditions. [Marcel Molina Jr.]

* Multiple enhancements and adjustments to DB2 adaptor. #3377 [contact@maik-schmidt.de]

* Sanitize scoped conditions. [Marcel Molina Jr.]

* Added option to Base.reflection_of_all_associations to specify a specific association to scope the call. For example Base.reflection_of_all_associations(:has_many) [DHH]

* Added ActiveRecord::SchemaDumper.ignore_tables which tells SchemaDumper which tables to ignore. Useful for tables with funky column like the ones required for tsearch2. [TobiasLuetke]

* SchemaDumper now doesn't fail anymore when there are unknown column types in the schema. Instead the table is ignored and a Comment is left in the schema.rb. [TobiasLuetke]

* Fixed that saving a model with multiple habtm associations would only save the first one.  #3244 [yanowitz-rubyonrails@quantumfoam.org, Florian Weber]

* Fix change_column to work with PostgreSQL 7.x and 8.x.  #3141 [wejn@box.cz, Rick Olson, Scott Barron] 

* removed :piggyback in favor of just allowing :select on :through associations. [Tobias Luetke] 

* made method missing delegation to class methods on relation target work on :through associations. [Tobias Luetke] 

* made .find() work on :through relations. [Tobias Luetke] 

* Fix typo in association docs. #3296. [Blair Zajac]

* Fixed :through relations when using STI inherited classes would use the inherited class's name as foreign key on the join model [Tobias Luetke] 

*1.13.2* (December 13th, 2005)

* Become part of Rails 1.0

* MySQL: allow encoding option for mysql.rb driver.  [Jeremy Kemper]

* Added option inheritance for find calls on has_and_belongs_to_many and has_many assosociations [DHH]. Example:

    class Post
      has_many :recent_comments, :class_name => "Comment", :limit => 10, :include => :author
    end

    post.recent_comments.find(:all) # Uses LIMIT 10 and includes authors
    post.recent_comments.find(:all, :limit => nil) # Uses no limit but include authors
    post.recent_comments.find(:all, :limit => nil, :include => nil) # Uses no limit and doesn't include authors

* Added option to specify :group, :limit, :offset, and :select options from find on has_and_belongs_to_many and has_many assosociations [DHH]

* MySQL: fixes for the bundled mysql.rb driver.  #3160 [Justin Forder]

* SQLServer: fix obscure optimistic locking bug.  #3068 [kajism@yahoo.com]

* SQLServer: support uniqueidentifier columns.  #2930 [keithm@infused.org]

* SQLServer: cope with tables names qualified by owner.  #3067 [jeff@ministrycentered.com]

* SQLServer: cope with columns with "desc" in the name.  #1950 [Ron Lusk, Ryan Tomayko]

* SQLServer: cope with primary keys with "select" in the name.  #3057 [rdifrango@captechventures.com]

* Oracle: active? performs a select instead of a commit.  #3133 [Michael Schoen]

* MySQL: more robust test for nullified result hashes.  #3124 [Stefan Kaes]

* Reloading an instance refreshes its aggregations as well as its associations.  #3024 [François Beausoleil]

* Fixed that using :include together with :conditions array in Base.find would cause NoMethodError #2887 [Paul Hammmond]

* PostgreSQL: more robust sequence name discovery.  #3087 [Rick Olson]

* Oracle: use syntax compatible with Oracle 8.  #3131 [Michael Schoen]

* MySQL: work around ruby-mysql/mysql-ruby inconsistency with mysql.stat.  Eliminate usage of mysql.ping because it doesn't guarantee reconnect.  Explicitly close and reopen the connection instead.  [Jeremy Kemper]

* Added preliminary support for polymorphic associations [DHH]

* Added preliminary support for join models [DHH]

* Allow validate_uniqueness_of to be scoped by more than just one column.  #1559. [jeremy@jthopple.com, Marcel Molina Jr.]

* Firebird: active? and reconnect! methods for handling stale connections.  #428 [Ken Kunz <kennethkunz@gmail.com>]

* Firebird: updated for FireRuby 0.4.0.  #3009 [Ken Kunz <kennethkunz@gmail.com>]

* MySQL and PostgreSQL: active? compatibility with the pure-Ruby driver.  #428 [Jeremy Kemper]

* Oracle: active? check pings the database rather than testing the last command status.  #428 [Michael Schoen]

* SQLServer: resolve column aliasing/quoting collision when using limit or offset in an eager find.  #2974 [kajism@yahoo.com]

* Reloading a model doesn't lose track of its connection.  #2996 [junk@miriamtech.com, Jeremy Kemper]

* Fixed bug where using update_attribute after pushing a record to a habtm association of the object caused duplicate rows in the join table. #2888 [colman@rominato.com, Florian Weber, Michael Schoen]

* MySQL, PostgreSQL: reconnect! also reconfigures the connection.  Otherwise, the connection 'loses' its settings if it times out and is reconnected.  #2978 [Shugo Maeda]

* has_and_belongs_to_many: use JOIN instead of LEFT JOIN.  [Jeremy Kemper]

* MySQL: introduce :encoding option to specify the character set for client, connection, and results.  Only available for MySQL 4.1 and later with the mysql-ruby driver.  Do SHOW CHARACTER SET in mysql client to see available encodings.  #2975 [Shugo Maeda]

* Add tasks to create, drop and rebuild the MySQL and PostgreSQL test  databases. [Marcel Molina Jr.]

* Correct boolean handling in generated reader methods.  #2945 [don.park@gmail.com, Stefan Kaes]

* Don't generate read methods for columns whose names are not valid ruby method names.  #2946 [Stefan Kaes]

* Document :force option to create_table.  #2921 [Blair Zajac <blair@orcaware.com>]

* Don't add the same conditions twice in has_one finder sql.  #2916 [Jeremy Evans]

* Rename Version constant to VERSION. #2802 [Marcel Molina Jr.]

* Introducing the Firebird adapter.  Quote columns and use attribute_condition more consistently.  Setup guide: http://wiki.rubyonrails.com/rails/pages/Firebird+Adapter  #1874 [Ken Kunz <kennethkunz@gmail.com>]

* SQLServer: active? and reconnect! methods for handling stale connections.  #428 [kajism@yahoo.com, Tom Ward <tom@popdog.net>]

* Associations handle case-equality more consistently: item.parts.is_a?(Array) and item.parts === Array.  #1345 [MarkusQ@reality.com]

* SQLServer: insert uses given primary key value if not nil rather than SELECT @@IDENTITY.  #2866 [kajism@yahoo.com, Tom Ward <tom@popdog.net>]

* Oracle: active? and reconnect! methods for handling stale connections.  Optionally retry queries after reconnect.  #428 [Michael Schoen <schoenm@earthlink.net>]

* Correct documentation for Base.delete_all.  #1568 [Newhydra]

* Oracle: test case for column default parsing.  #2788 [Michael Schoen <schoenm@earthlink.net>]

* Update documentation for Migrations.  #2861 [Tom Werner <tom@cube6media.com>]

* When AbstractAdapter#log rescues an exception, attempt to detect and reconnect to an inactive database connection.  Connection adapter must respond to the active? and reconnect! instance methods.  Initial support for PostgreSQL, MySQL, and SQLite.  Make certain that all statements which may need reconnection are performed within a logged block: for example, this means no avoiding log(sql, name) { } if @logger.nil?  #428 [Jeremy Kemper]

* Oracle: Much faster column reflection.  #2848 [Michael Schoen <schoenm@earthlink.net>]

* Base.reset_sequence_name analogous to reset_table_name (mostly useful for testing).  Base.define_attr_method allows nil values.  [Jeremy Kemper]

* PostgreSQL: smarter sequence name defaults, stricter last_insert_id, warn on pk without sequence.  [Jeremy Kemper]

* PostgreSQL: correctly discover custom primary key sequences.  #2594 [Blair Zajac <blair@orcaware.com>, meadow.nnick@gmail.com, Jeremy Kemper]

* SQLServer: don't report limits for unsupported field types.  #2835 [Ryan Tomayko]

* Include the Enumerable module in ActiveRecord::Errors.  [Rick Bradley <rick@rickbradley.com>]

* Add :group option, correspond to GROUP BY, to the find method and to the has_many association.  #2818 [rubyonrails@atyp.de]

* Don't cast nil or empty strings to a dummy date.  #2789 [Rick Bradley <rick@rickbradley.com>]

* acts_as_list plays nicely with inheritance by remembering the class which declared it.  #2811 [rephorm@rephorm.com]

* Fix sqlite adaptor's detection of missing dbfile or database declaration. [Nicholas Seckar]

* Fixed acts_as_list for definitions without an explicit :order #2803 [jonathan@bluewire.net.nz]

* Upgrade bundled ruby-mysql 0.2.4 with mysql411 shim (see #440) to ruby-mysql 0.2.6 with a patchset for 4.1 protocol support.  Local change [301] is now a part of the main driver; reapplied local change [2182].  Removed GC.start from Result.free.  [tommy@tmtm.org, akuroda@gmail.com, Doug Fales <doug.fales@gmail.com>, Jeremy Kemper]

* Correct handling of complex order clauses with SQL Server limit emulation.  #2770 [Tom Ward <tom@popdog.net>, Matt B.]

* Correct whitespace problem in Oracle default column value parsing.  #2788 [rick@rickbradley.com]

* Destroy associated has_and_belongs_to_many records after all before_destroy callbacks but before destroy.  This allows you to act on the habtm association as you please while preserving referential integrity.  #2065 [larrywilliams1@gmail.com, sam.kirchmeier@gmail.com, elliot@townx.org, Jeremy Kemper]

* Deprecate the old, confusing :exclusively_dependent option in favor of :dependent => :delete_all.  [Jeremy Kemper]

* More compatible Oracle column reflection.  #2771 [Ryan Davis <ryand-ruby@zenspider.com>, Michael Schoen <schoenm@earthlink.net>]


*1.13.0* (November 7th, 2005)

* Fixed faulty regex in get_table_name method (SQLServerAdapter) #2639 [Ryan Tomayko]

* Added :include as an option for association declarations [DHH]. Example:

    has_many :posts, :include => [ :author, :comments ]

* Rename Base.constrain to Base.with_scope so it doesn't conflict with existing concept of database constraints.  Make scoping more robust: uniform method => parameters, validated method names and supported finder parameters, raise exception on nested scopes.  [Jeremy Kemper]  Example:

    Comment.with_scope(:find => { :conditions => 'active=true' }, :create => { :post_id => 5 }) do
      # Find where name = ? and active=true
      Comment.find :all, :conditions => ['name = ?', name]
      # Create comment associated with :post_id
      Comment.create :body => "Hello world"
    end

* Fixed that SQL Server should ignore :size declarations on anything but integer and string in the agnostic schema representation #2756 [Ryan Tomayko]

* Added constrain scoping for creates using a hash of attributes bound to the :creation key [DHH]. Example:

    Comment.constrain(:creation => { :post_id => 5 }) do
      # Associated with :post_id
      Comment.create :body => "Hello world"
    end

  This is rarely used directly, but allows for find_or_create on associations. So you can do:

    # If the tag doesn't exist, a new one is created that's associated with the person
    person.tags.find_or_create_by_name("Summer")

* Added find_or_create_by_X as a second type of dynamic finder that'll create the record if it doesn't already exist [DHH]. Example:

    # No 'Summer' tag exists
    Tag.find_or_create_by_name("Summer") # equal to Tag.create(:name => "Summer")

    # Now the 'Summer' tag does exist
    Tag.find_or_create_by_name("Summer") # equal to Tag.find_by_name("Summer")

* Added extension capabilities to has_many and has_and_belongs_to_many proxies [DHH]. Example:

    class Account < ActiveRecord::Base
      has_many :people do
        def find_or_create_by_name(name)
          first_name, *last_name = name.split
          last_name = last_name.join " "

          find_or_create_by_first_name_and_last_name(first_name, last_name)
        end
      end
    end

    person = Account.find(:first).people.find_or_create_by_name("David Heinemeier Hansson")
    person.first_name # => "David"
    person.last_name  # => "Heinemeier Hansson"

  Note that the anoymous module must be declared using brackets, not do/end (due to order of evaluation).

* Omit internal dtproperties table from SQLServer table list.  #2729 [rtomayko@gmail.com]

* Quote column names in generated SQL.  #2728 [rtomayko@gmail.com]

* Correct the pure-Ruby MySQL 4.1.1 shim's version test.  #2718 [Jeremy Kemper]

* Add Model.create! to match existing model.save! method.  When save! raises RecordInvalid, you can catch the exception, retrieve the invalid record (invalid_exception.record), and see its errors (invalid_exception.record.errors).  [Jeremy Kemper]

* Correct fixture behavior when table name pluralization is off.  #2719 [Rick Bradley <rick@rickbradley.com>]

* Changed :dbfile to :database for SQLite adapter for consistency (old key still works as an alias) #2644 [Dan Peterson]

* Added migration support for Oracle #2647 [Michael Schoen]

* Worked around that connection can't be reset if allow_concurrency is off.  #2648 [Michael Schoen <schoenm@earthlink.net>]

* Fixed SQL Server adapter to pass even more tests and do even better #2634 [rtomayko@gmail.com]

* Fixed SQL Server adapter so it honors options[:conditions] when applying :limits #1978 [Tom Ward]

* Added migration support to SQL Server adapter (please someone do the same for Oracle and DB2) #2625 [Tom Ward]

* Use AR::Base.silence rather than AR::Base.logger.silence in fixtures to preserve Log4r compatibility.  #2618 [dansketcher@gmail.com]

* Constraints are cloned so they can't be inadvertently modified while they're
in effect.  Added :readonly finder constraint.  Calling an association collection's class method (Part.foobar via item.parts.foobar) constrains :readonly => false since the collection's :joins constraint would otherwise force it to true.  [Jeremy Kemper <rails@bitsweat.net>]

* Added :offset and :limit to the kinds of options that Base.constrain can use #2466 [duane.johnson@gmail.com]

* Fixed handling of nil number columns on Oracle and cleaned up tests for Oracle in general #2555 [schoenm@earthlink.net]

* Added quoted_true and quoted_false methods and tables to db2_adapter and cleaned up tests for DB2 #2493, #2624 [maik schmidt]


*1.12.2* (October 26th, 2005)

* Allow symbols to rename columns when using SQLite adapter. #2531 [kevin.clark@gmail.com]

* Map Active Record time to SQL TIME.  #2575, #2576 [Robby Russell <robby@planetargon.com>]

* Clarify semantics of ActiveRecord::Base#respond_to?  #2560 [skaes@web.de]

* Fixed Association#clear for associations which have not yet been accessed. #2524 [Patrick Lenz <patrick@lenz.sh>]

* HABTM finders shouldn't return readonly records.  #2525 [Patrick Lenz <patrick@lenz.sh>]

* Make all tests runnable on their own. #2521. [Blair Zajac <blair@orcaware.com>]


*1.12.1* (October 19th, 2005)

* Always parenthesize :conditions options so they may be safely combined with STI and constraints.

* Correct PostgreSQL primary key sequence detection.  #2507 [tmornini@infomania.com]

* Added support for using limits in eager loads that involve has_many and has_and_belongs_to_many associations


*1.12.0* (October 16th, 2005)

* Update/clean up documentation (rdoc)

* PostgreSQL sequence support.  Use set_sequence_name in your model class to specify its primary key sequence.  #2292 [Rick Olson <technoweenie@gmail.com>, Robby Russell <robby@planetargon.com>]

* Change default logging colors to work on both white and black backgrounds. [Sam Stephenson]

* YAML fixtures support ordered hashes for fixtures with foreign key dependencies in the same table.  #1896 [purestorm@ggnore.net]

* :dependent now accepts :nullify option. Sets the foreign key of the related objects to NULL instead of deleting them. #2015 [Robby Russell <robby@planetargon.com>] 

* Introduce read-only records.  If you call object.readonly! then it will mark the object as read-only and raise ReadOnlyRecord if you call object.save.  object.readonly? reports whether the object is read-only.  Passing :readonly => true to any finder method will mark returned records as read-only.  The :joins option now implies :readonly, so if you use this option, saving the same record will now fail.  Use find_by_sql to work around.

* Avoid memleak in dev mode when using fcgi

* Simplified .clear on active record associations by using the existing delete_records method. #1906 [Caleb <me@cpb.ca>]

* Delegate access to a customized primary key to the conventional id method. #2444. [Blair Zajac <blair@orcaware.com>]

* Fix errors caused by assigning a has-one or belongs-to property to itself

* Add ActiveRecord::Base.schema_format setting which specifies how databases should be dumped [Sam Stephenson]

* Update DB2 adapter. #2206. [contact@maik-schmidt.de]

* Corrections to SQLServer native data types. #2267.  [rails.20.clarry@spamgourmet.com]

* Deprecated ActiveRecord::Base.threaded_connection in favor of ActiveRecord::Base.allow_concurrency.

* Protect id attribute from mass assigment even when the primary key is set to something else. #2438. [Blair Zajac <blair@orcaware.com>]

* Misc doc fixes (typos/grammar/etc.). #2430. [coffee2code]

* Add test coverage for content_columns. #2432. [coffee2code]

* Speed up for unthreaded environments. #2431. [skaes@web.de]

* Optimization for Mysql selects using mysql-ruby extension greater than 2.6.3.  #2426. [skaes@web.de]

* Speed up the setting of table_name. #2428. [skaes@web.de]

* Optimize instantiation of STI subclass records. In partial fullfilment of #1236. [skaes@web.de]

* Fix typo of 'constrains' to 'contraints'. #2069. [Michael Schuerig <michael@schuerig.de>]

* Optimization refactoring for add_limit_offset!. In partial fullfilment of #1236. [skaes@web.de]

* Add ability to get all siblings, including the current child, with acts_as_tree. Recloses #2140. [Michael Schuerig <michael@schuerig.de>]

* Add geometric type for postgresql adapter. #2233 [akaspick@gmail.com]

* Add option (true by default) to generate reader methods for each attribute of a record to avoid the overhead of calling method missing. In partial fullfilment of #1236. [skaes@web.de]

* Add convenience predicate methods on Column class. In partial fullfilment of #1236. [skaes@web.de]

* Raise errors when invalid hash keys are passed to ActiveRecord::Base.find. #2363  [Chad Fowler <chad@chadfowler.com>, Nicholas Seckar]

* Added :force option to create_table that'll try to drop the table if it already exists before creating

* Fix transactions so that calling return while inside a transaction will not leave an open transaction on the connection. [Nicholas Seckar]

* Use foreign_key inflection uniformly.  #2156 [Blair Zajac <blair@orcaware.com>]

* model.association.clear should destroy associated objects if :dependent => true instead of nullifying their foreign keys.  #2221 [joergd@pobox.com, ObieFernandez <obiefernandez@gmail.com>]

* Returning false from before_destroy should cancel the action.  #1829 [Jeremy Huffman]

* Recognize PostgreSQL NOW() default as equivalent to CURRENT_TIMESTAMP or CURRENT_DATE, depending on the column's type.  #2256 [mat <mat@absolight.fr>]

* Extensive documentation for the abstract database adapter.  #2250 [François Beausoleil <fbeausoleil@ftml.net>]

* Clean up Fixtures.reset_sequences for PostgreSQL.  Handle tables with no rows and models with custom primary keys.  #2174, #2183 [jay@jay.fm, Blair Zajac <blair@orcaware.com>]

* Improve error message when nil is assigned to an attr which validates_size_of within a range.  #2022 [Manuel Holtgrewe <purestorm@ggnore.net>]

* Make update_attribute use the same writer method that update_attributes uses.
 #2237 [trevor@protocool.com]

* Make migrations honor table name prefixes and suffixes. #2298 [Jakob S, Marcel Molina]

* Correct and optimize PostgreSQL bytea escaping.  #1745, #1837 [dave@cherryville.org, ken@miriamtech.com, bellis@deepthought.org]

* Fixtures should only reset a PostgreSQL sequence if it corresponds to an integer primary key named id.  #1749 [chris@chrisbrinker.com]

* Standardize the interpretation of boolean columns in the Mysql and Sqlite adapters. (Use MysqlAdapter.emulate_booleans = false to disable this behavior)

* Added new symbol-driven approach to activating observers with Base#observers= [DHH]. Example:

    ActiveRecord::Base.observers = :cacher, :garbage_collector

* Added AbstractAdapter#select_value and AbstractAdapter#select_values as convenience methods for selecting single values, instead of hashes, of the first column in a SELECT #2283 [solo@gatelys.com]

* Wrap :conditions in parentheses to prevent problems with OR's #1871 [Jamis Buck]

* Allow the postgresql adapter to work with the SchemaDumper. [Jamis Buck]

* Add ActiveRecord::SchemaDumper for dumping a DB schema to a pure-ruby file, making it easier to consolidate large migration lists and port database schemas between databases. [Jamis Buck]

* Fixed migrations for Windows when using more than 10 [David Naseby]

* Fixed that the create_x method from belongs_to wouldn't save the association properly #2042 [Florian Weber]

* Fixed saving a record with two unsaved belongs_to associations pointing to the same object #2023 [Tobias Luetke]

* Improved migrations' behavior when the schema_info table is empty. [Nicholas Seckar]

* Fixed that Observers didn't observe sub-classes #627 [Florian Weber]

* Fix eager loading error messages, allow :include to specify tables using strings or symbols. Closes #2222 [Marcel Molina]

* Added check for RAILS_CONNECTION_ADAPTERS on startup and only load the connection adapters specified within if its present (available in Rails through config.connection_adapters using the new config) #1958 [skae]

* Fixed various problems with has_and_belongs_to_many when using customer finder_sql #2094 [Florian Weber]

* Added better exception error when unknown column types are used with migrations #1814 [fbeausoleil@ftml.net]

* Fixed "connection lost" issue with the bundled Ruby/MySQL driver (would kill the app after 8 hours of inactivity) #2163, #428 [kajism@yahoo.com]

* Fixed comparison of Active Record objects so two new objects are not equal #2099 [deberg]

* Fixed that the SQL Server adapter would sometimes return DBI::Timestamp objects instead of Time #2127 [Tom Ward]

* Added the instance methods #root and #ancestors on acts_as_tree and fixed siblings to not include the current node #2142, #2140 [coffee2code]

* Fixed that Active Record would call SHOW FIELDS twice (or more) for the same model when the cached results were available #1947 [sd@notso.net]

* Added log_level and use_silence parameter to ActiveRecord::Base.benchmark. The first controls at what level the benchmark statement will be logged (now as debug, instead of info) and the second that can be passed false to include all logging statements during the benchmark block/

* Make sure the schema_info table is created before querying the current version #1903

* Fixtures ignore table name prefix and suffix #1987 [Jakob S]

* Add documentation for index_type argument to add_index method for migrations #2005 [blaine@odeo.com]

* Modify read_attribute to allow a symbol argument #2024 [Ken Kunz]

* Make destroy return self #1913 [sebastian.kanthak@muehlheim.de]

* Fix typo in validations documentation #1938 [court3nay]

* Make acts_as_list work for insert_at(1) #1966 [hensleyl@papermountain.org]

* Fix typo in count_by_sql documentation #1969 [Alexey Verkhovsky]

* Allow add_column and create_table to specify NOT NULL #1712 [emptysands@gmail.com]

* Fix create_table so that id column is implicitly added [Rick Olson]

* Default sequence names for Oracle changed to #{table_name}_seq, which is the most commonly used standard. In addition, a new method ActiveRecord::Base#set_sequence_name allows the developer to set the sequence name per model. This is a non-backwards-compatible change -- anyone using the old-style "rails_sequence" will need to either create new sequences, or set: ActiveRecord::Base.set_sequence_name = "rails_sequence" #1798

* OCIAdapter now properly handles synonyms, which are commonly used to separate out the schema owner from the application user #1798

* Fixed the handling of camelCase columns names in Oracle #1798

* Implemented for OCI the Rakefile tasks of :clone_structure_to_test, :db_structure_dump, and :purge_test_database, which enable Oracle folks to enjoy all the agile goodness of Rails for testing. Note that the current implementation is fairly limited -- only tables and sequences are cloned, not constraints or indexes. A full clone in Oracle generally requires some manual effort, and is version-specific. Post 9i, Oracle recommends the use of the DBMS_METADATA package, though that approach requires editing of the physical characteristics generated #1798

* Fixed the handling of multiple blob columns in Oracle if one or more of them are null #1798

* Added support for calling constrained class methods on has_many and has_and_belongs_to_many collections #1764 [Tobias Luetke]

    class Comment < AR:B
      def self.search(q)
        find(:all, :conditions => ["body = ?", q])
      end
    end 

    class Post < AR:B
      has_many :comments
    end

    Post.find(1).comments.search('hi') # => SELECT * from comments WHERE post_id = 1 AND body = 'hi'

  NOTICE: This patch changes the underlying SQL generated by has_and_belongs_to_many queries. If your relying on that, such as
  by explicitly referencing the old t and j aliases, you'll need to update your code. Of course, you _shouldn't_ be relying on
  details like that no less than you should be diving in to touch private variables. But just in case you do, consider yourself
  noticed :)

* Added migration support for SQLite (using temporary tables to simulate ALTER TABLE) #1771 [Sam Stephenson]

* Remove extra definition of supports_migrations? from abstract_adaptor.rb [Nicholas Seckar]

* Fix acts_as_list so that moving next-to-last item to the bottom does not result in duplicate item positions

* Fixed incompatibility in DB2 adapter with the new limit/offset approach #1718 [Maik Schmidt]

* Added :select option to find which can specify a different value than the default *, like find(:all, :select => "first_name, last_name"), if you either only want to select part of the columns or exclude columns otherwise included from a join #1338 [Stefan Kaes]


*1.11.1* (11 July, 2005)

* Added support for limit and offset with eager loading of has_one and belongs_to associations. Using the options with has_many and has_and_belongs_to_many associations will now raise an ActiveRecord::ConfigurationError #1692 [Rick Olsen]

* Fixed that assume_bottom_position (in acts_as_list) could be called on items already last in the list and they would move one position away from the list #1648 [tyler@kianta.com]

* Added ActiveRecord::Base.threaded_connections flag to turn off 1-connection per thread (required for thread safety). By default it's on, but WEBrick in Rails need it off #1685 [Sam Stephenson]

* Correct reflected table name for singular associations.  #1688 [court3nay@gmail.com]

* Fixed optimistic locking with SQL Server #1660 [tom@popdog.net]

* Added ActiveRecord::Migrator.migrate that can figure out whether to go up or down based on the target version and the current

* Added better error message for "packets out of order" #1630 [courtenay]

* Fixed first run of "rake migrate" on PostgreSQL by not expecting a return value on the id #1640


*1.11.0* (6 July, 2005)

* Fixed that Yaml error message in fixtures hid the real error #1623 [Nicholas Seckar]

* Changed logging of SQL statements to use the DEBUG level instead of INFO

* Added new Migrations framework for describing schema transformations in a way that can be easily applied across multiple databases #1604 [Tobias Luetke] See documentation under ActiveRecord::Migration and the additional support in the Rails rakefile/generator.

* Added callback hooks to association collections #1549 [Florian Weber]. Example:

    class Project
      has_and_belongs_to_many :developers, :before_add => :evaluate_velocity

      def evaluate_velocity(developer)
        ...
      end
    end 

  ..raising an exception will cause the object not to be added (or removed, with before_remove).


* Fixed Base.content_columns call for SQL Server adapter #1450 [DeLynn Berry]

* Fixed Base#write_attribute to work with both symbols and strings #1190 [Paul Legato]

* Fixed that has_and_belongs_to_many didn't respect single table inheritance types #1081 [Florian Weber]

* Speed up ActiveRecord#method_missing for the common case (read_attribute).

* Only notify observers on after_find and after_initialize if these methods are defined on the model.  #1235 [skaes@web.de]

* Fixed that single-table inheritance sub-classes couldn't be used to limit the result set with eager loading #1215 [Chris McGrath]

* Fixed validates_numericality_of to work with overrided getter-method when :allow_nil is on #1316 [raidel@onemail.at]

* Added roots, root, and siblings to the batch of methods added by acts_as_tree #1541 [michael@schuerig.de]

* Added support for limit/offset with the MS SQL Server driver so that pagination will now work #1569 [DeLynn Berry]

* Added support for ODBC connections to MS SQL Server so you can connect from a non-Windows machine #1569 [Mark Imbriaco/DeLynn Berry]

* Fixed that multiparameter posts ignored attr_protected #1532 [alec+rails@veryclever.net]

* Fixed problem with eager loading when using a has_and_belongs_to_many association using :association_foreign_key #1504 [flash@vanklinkenbergsoftware.nl]

* Fixed Base#find to honor the documentation on how :joins work and make them consistent with Base#count #1405 [pritchie@gmail.com]. What used to be:

    Developer.find :all, :joins => 'developers_projects', :conditions => 'id=developer_id AND project_id=1'

  ...should instead be:

    Developer.find(
      :all, 
      :joins => 'LEFT JOIN developers_projects ON developers.id = developers_projects.developer_id', 
      :conditions => 'project_id=1'
    )    

* Fixed that validations didn't respecting custom setting for too_short, too_long messages #1437 [Marcel Molina]

* Fixed that clear_association_cache doesn't delete new associations on new records (so you can safely place new records in the session with Action Pack without having new associations wiped) #1494 [cluon]

* Fixed that calling Model.find([]) returns [] and doesn't throw an exception #1379

* Fixed that adding a record to a has_and_belongs_to collection would always save it -- now it only saves if its a new record #1203 [Alisdair McDiarmid]

* Fixed saving of in-memory association structures to happen as a after_create/after_update callback instead of after_save -- that way you can add new associations in after_create/after_update callbacks without getting them saved twice

* Allow any Enumerable, not just Array, to work as bind variables #1344 [Jeremy Kemper]

* Added actual database-changing behavior to collection assigment for has_many and has_and_belongs_to_many #1425 [Sebastian Kanthak].
  Example:

    david.projects = [Project.find(1), Project.new("name" => "ActionWebSearch")]
    david.save

  If david.projects already contain the project with ID 1, this is left unchanged. Any other projects are dropped. And the new
  project is saved when david.save is called.

  Also included is a way to do assignments through IDs, which is perfect for checkbox updating, so you get to do:

    david.project_ids = [1, 5, 7]

* Corrected typo in find SQL for has_and_belongs_to_many.  #1312 [ben@bensinclair.com]

* Fixed sanitized conditions for has_many finder method.  #1281 [jackc@hylesanderson.com, pragdave, Tobias Luetke]

* Comprehensive PostgreSQL schema support.  Use the optional schema_search_path directive in database.yml to give a comma-separated list of schemas to search for your tables.  This allows you, for example, to have tables in a shared schema without having to use a custom table name.  See http://www.postgresql.org/docs/8.0/interactive/ddl-schemas.html to learn more.  #827 [dave@cherryville.org]

* Corrected @@configurations typo #1410 [david@ruppconsulting.com]

* Return PostgreSQL columns in the order they were declared #1374 [perlguy@gmail.com]

* Allow before/after update hooks to work on models using optimistic locking 

* Eager loading of dependent has_one associations won't delete the association #1212

* Added a second parameter to the build and create method for has_one that controls whether the existing association should be replaced (which means nullifying its foreign key as well). By default this is true, but false can be passed to prevent it.

* Using transactional fixtures now causes the data to be loaded only once.

* Added fixture accessor methods that can be used when instantiated fixtures are disabled.

    fixtures :web_sites

    def test_something
      assert_equal "Ruby on Rails", web_sites(:rubyonrails).name
    end

* Added DoubleRenderError exception that'll be raised if render* is called twice #518 [Nicholas Seckar]

* Fixed exceptions occuring after render has been called #1096 [Nicholas Seckar]

* CHANGED: validates_presence_of now uses Errors#add_on_blank, which will make "  " fail the validation where it didn't before #1309

* Added Errors#add_on_blank which works like Errors#add_on_empty, but uses Object#blank? instead

* Added the :if option to all validations that can either use a block or a method pointer to determine whether the validation should be run or not. #1324 [Duane Johnson/jhosteny]. Examples:

  Conditional validations such as the following are made possible:
    validates_numericality_of :income, :if => :employed?

  Conditional validations can also solve the salted login generator problem:
    validates_confirmation_of :password, :if => :new_password?

  Using blocks:
    validates_presence_of :username, :if => Proc.new { |user| user.signup_step > 1 }

* Fixed use of construct_finder_sql when using :join #1288 [dwlt@dwlt.net]

* Fixed that :delete_sql in has_and_belongs_to_many associations couldn't access record properties #1299 [Rick Olson]

* Fixed that clone would break when an aggregate had the same name as one of its attributes #1307 [Jeremy Kemper]

* Changed that destroying an object will only freeze the attributes hash, which keeps the object from having attributes changed (as that wouldn't make sense), but allows for the querying of associations after it has been destroyed.

* Changed the callbacks such that observers are notified before the in-object callbacks are triggered. Without this change, it wasn't possible to act on the whole object in something like a before_destroy observer without having the objects own callbacks (like deleting associations) called first.

* Added option for passing an array to the find_all version of the dynamic finders and have it evaluated as an IN fragment. Example:

    # SELECT * FROM topics WHERE title IN ('First', 'Second')
    Topic.find_all_by_title(["First", "Second"])

* Added compatibility with camelCase column names for dynamic finders #533 [Dee.Zsombor]

* Fixed extraneous comma in count() function that made it not work with joins #1156 [jarkko/Dee.Zsombor]

* Fixed incompatibility with Base#find with an array of ids that would fail when using eager loading #1186 [Alisdair McDiarmid]

* Fixed that validate_length_of lost :on option when :within was specified #1195 [jhosteny@mac.com]

* Added encoding and min_messages options for PostgreSQL #1205 [shugo]. Configuration example:

    development:
      adapter: postgresql
      database: rails_development
      host: localhost
      username: postgres
      password:
      encoding: UTF8
      min_messages: ERROR

* Fixed acts_as_list where deleting an item that was removed from the list would ruin the positioning of other list items #1197 [Jamis Buck]

* Added validates_exclusion_of as a negative of validates_inclusion_of

* Optimized counting of has_many associations by setting the association to empty if the count is 0 so repeated calls doesn't trigger database calls


*1.10.1* (20th April, 2005)

* Fixed frivilous database queries being triggered with eager loading on empty associations and other things

* Fixed order of loading in eager associations

* Fixed stray comma when using eager loading and ordering together from has_many associations #1143


*1.10.0* (19th April, 2005)

* Added eager loading of associations as a way to solve the N+1 problem more gracefully without piggy-back queries. Example:

    for post in Post.find(:all, :limit => 100)
      puts "Post:            " + post.title
      puts "Written by:      " + post.author.name
      puts "Last comment on: " + post.comments.first.created_on
    end

  This used to generate 301 database queries if all 100 posts had both author and comments. It can now be written as:

    for post in Post.find(:all, :limit => 100, :include => [ :author, :comments ])

  ...and the number of database queries needed is now 1.

* Added new unified Base.find API and deprecated the use of find_first and find_all. See the documentation for Base.find. Examples:

    Person.find(1, :conditions => "administrator = 1", :order => "created_on DESC")
    Person.find(1, 5, 6, :conditions => "administrator = 1", :order => "created_on DESC")
    Person.find(:first, :order => "created_on DESC", :offset => 5)
    Person.find(:all, :conditions => [ "category IN (?)", categories], :limit => 50)
    Person.find(:all, :offset => 10, :limit => 10)

* Added acts_as_nested_set #1000 [wschenk]. Introduction:

    This acts provides Nested Set functionality.  Nested Set is similiar to Tree, but with
    the added feature that you can select the children and all of it's descendants with
    a single query.  A good use case for this is a threaded post system, where you want
    to display every reply to a comment without multiple selects.

* Added Base.save! that attempts to save the record just like Base.save but will raise a RecordInvalid exception instead of returning false if the record is not valid [After much pestering from Dave Thomas]

* Fixed PostgreSQL usage of fixtures with regards to public schemas and table names with dots #962 [gnuman1@gmail.com]

* Fixed that fixtures were being deleted in the same order as inserts causing FK errors #890 [andrew.john.peters@gmail.com]

* Fixed loading of fixtures in to be in the right order (or PostgreSQL would bark) #1047 [stephenh@chase3000.com]

* Fixed page caching for non-vhost applications living underneath the root #1004 [Ben Schumacher]

* Fixes a problem with the SQL Adapter which was resulting in IDENTITY_INSERT not being set to ON when it should be #1104 [adelle]

* Added the option to specify the acceptance string in validates_acceptance_of #1106 [caleb@aei-tech.com]

* Added insert_at(position) to acts_as_list #1083 [DeLynnB]

* Removed the default order by id on has_and_belongs_to_many queries as it could kill performance on large sets (you can still specify by hand with :order)

* Fixed that Base.silence should restore the old logger level when done, not just set it to DEBUG #1084 [yon@milliped.com]

* Fixed boolean saving on Oracle #1093 [mparrish@pearware.org]

* Moved build_association and create_association for has_one and belongs_to out of deprecation as they work when the association is nil unlike association.build and association.create, which require the association to be already in place #864

* Added rollbacks of transactions if they're active as the dispatcher is killed gracefully (TERM signal) #1054 [Leon Bredt]

* Added quoting of column names for fixtures #997 [jcfischer@gmail.com]

* Fixed counter_sql when no records exist in database for PostgreSQL (would give error, not 0) #1039 [Caleb Tennis]

* Fixed that benchmarking times for rendering included db runtimes #987 [skaes@web.de]

* Fixed boolean queries for t/f fields in PostgreSQL #995 [dave@cherryville.org]

* Added that model.items.delete(child) will delete the child, not just set the foreign key to nil, if the child is dependent on the model #978 [Jeremy Kemper]

* Fixed auto-stamping of dates (created_on/updated_on) for PostgreSQL #985 [dave@cherryville.org]

* Fixed Base.silence/benchmark to only log if a logger has been configured #986 [skaes@web.de]

* Added a join parameter as the third argument to Base.find_first and as the second to Base.count #426, #988 [skaes@web.de]

* Fixed bug in Base#hash method that would treat records with the same string-based id as different [Dave Thomas]

* Renamed DateHelper#distance_of_time_in_words_to_now to DateHelper#time_ago_in_words (old method name is still available as a deprecated alias)


*1.9.1* (27th March, 2005)

* Fixed that Active Record objects with float attribute could not be cloned #808

* Fixed that MissingSourceFile's wasn't properly detected in production mode #925 [Nicholas Seckar]

* Fixed that :counter_cache option would look for a line_items_count column for a LineItem object instead of lineitems_count

* Fixed that AR exists?() would explode on postgresql if the passed id did not match the PK type #900 [Scott Barron]

* Fixed the MS SQL adapter to work with the new limit/offset approach and with binary data (still suffering from 7KB limit, though) #901 [delynnb]


*1.9.0* (22th March, 2005)

* Added adapter independent limit clause as a two-element array with the first being the limit, the second being the offset #795 [Sam Stephenson]. Example:

    Developer.find_all nil, 'id ASC', 5      # return the first five developers 
    Developer.find_all nil, 'id ASC', [3, 8] # return three developers, starting from #8 and forward

  This doesn't yet work with the DB2 or MS SQL adapters. Patches to make that happen are encouraged. 

* Added alias_method :to_param, :id to Base, such that Active Record objects to be used as URL parameters in Action Pack automatically #812 [Nicholas Seckar/Sam Stephenson]

* Improved the performance of the OCI8 adapter for Oracle #723 [pilx/gjenkins]

* Added type conversion before saving a record, so string-based values like "10.0" aren't left for the database to convert #820 [dave@cherryville.org]

* Added with additional settings for working with transactional fixtures and pre-loaded test databases #865 [mindel]

* Fixed acts_as_list to trigger remove_from_list on destroy after the fact, not before, so a unique position can be maintained #871 [Alisdair McDiarmid]

* Added the possibility of specifying fixtures in multiple calls #816 [kim@tinker.com]

* Added Base.exists?(id) that'll return true if an object of the class with the given id exists #854 [stian@grytoyr.net]

* Added optionally allow for nil or empty strings with validates_numericality_of #801 [Sebastian Kanthak]

* Fixed problem with using slashes in validates_format_of regular expressions #801 [Sebastian Kanthak]

* Fixed that SQLite3 exceptions are caught and reported properly #823 [yerejm]

* Added that all types of after_find/after_initialized callbacks are triggered if the explicit implementation is present, not only the explicit implementation itself

* Fixed that symbols can be used on attribute assignment, like page.emails.create(:subject => data.subject, :body => data.body)


*1.8.0* (7th March, 2005)

* Added ActiveRecord::Base.colorize_logging to control whether to use colors in logs or not (on by default)

* Added support for timestamp with time zone in PostgreSQL #560 [Scott Barron]

* Added MultiparameterAssignmentErrors and AttributeAssignmentError exceptions #777 [demetrius]. Documentation:

   * +MultiparameterAssignmentErrors+ -- collection of errors that occurred during a mass assignment using the 
     +attributes=+ method. The +errors+ property of this exception contains an array of +AttributeAssignmentError+ 
     objects that should be inspected to determine which attributes triggered the errors.
   * +AttributeAssignmentError+ -- an error occurred while doing a mass assignment through the +attributes=+ method.
     You can inspect the +attribute+ property of the exception object to determine which attribute triggered the error.

* Fixed that postgresql adapter would fails when reading bytea fields with null value #771 [rodrigo k]

* Added transactional fixtures that uses rollback to undo changes to fixtures instead of DELETE/INSERT -- it's much faster. See documentation under Fixtures #760 [Jeremy Kemper]

* Added destruction of dependent objects in has_one associations when a new assignment happens #742 [mindel]. Example:

    class Account < ActiveRecord::Base
      has_one :credit_card, :dependent => true
    end
    class CreditCard < ActiveRecord::Base
      belongs_to :account
    end

    account.credit_card # => returns existing credit card, lets say id = 12
    account.credit_card = CreditCard.create("number" => "123")
    account.save # => CC with id = 12 is destroyed


* Added validates_numericality_of #716 [skanthak/c.r.mcgrath]. Docuemntation:

    Validates whether the value of the specified attribute is numeric by trying to convert it to
    a float with Kernel.Float (if <tt>integer</tt> is false) or applying it to the regular expression
    <tt>/^[\+\-]?\d+$/</tt> (if <tt>integer</tt> is set to true).

      class Person < ActiveRecord::Base
        validates_numericality_of :value, :on => :create
      end

    Configuration options:
    * <tt>message</tt> - A custom error message (default is: "is not a number")
    * <tt>on</tt> Specifies when this validation is active (default is :save, other options :create, :update)
    * <tt>only_integer</tt> Specifies whether the value has to be an integer, e.g. an integral value (default is false)


* Fixed that HasManyAssociation#count was using :finder_sql rather than :counter_sql if it was available #445 [Scott Barron]

* Added better defaults for composed_of, so statements like composed_of :time_zone, :mapping => %w( time_zone time_zone ) can be written without the mapping part (it's now assumed)

* Added MacroReflection#macro which will return a symbol describing the macro used (like :composed_of or :has_many) #718, #248 [james@slashetc.com]


*1.7.0* (24th February, 2005)

* Changed the auto-timestamping feature to use ActiveRecord::Base.default_timezone instead of entertaining the parallel ActiveRecord::Base.timestamps_gmt method. The latter is now deprecated and will throw a warning on use (but still work) #710 [Jamis Buck]

* Added a OCI8-based Oracle adapter that has been verified to work with Oracle 8 and 9 #629 [Graham Jenkins]. Usage notes:

    1.  Key generation uses a sequence "rails_sequence" for all tables. (I couldn't find a simple
        and safe way of passing table-specific sequence information to the adapter.)
    2.  Oracle uses DATE or TIMESTAMP datatypes for both dates and times. Consequently I have had to
        resort to some hacks to get data converted to Date or Time in Ruby.
        If the column_name ends in _at (like created_at, updated_at) it's created as a Ruby Time. Else if the
        hours/minutes/seconds are 0, I make it a Ruby Date. Else it's a Ruby Time.
        This is nasty - but if you use Duck Typing you'll probably not care very much.
        In 9i it's tempting to map DATE to Date and TIMESTAMP to Time but I don't think that is
        valid - too many databases use DATE for both.
        Timezones and sub-second precision on timestamps are not supported.
    3.  Default values that are functions (such as "SYSDATE") are not supported. This is a
        restriction of the way active record supports default values.
    4.  Referential integrity constraints are not fully supported. Under at least
        some circumstances, active record appears to delete parent and child records out of
        sequence and out of transaction scope. (Or this may just be a problem of test setup.)

  The OCI8 driver can be retrieved from http://rubyforge.org/projects/ruby-oci8/

* Added option :schema_order to the PostgreSQL adapter to support the use of multiple schemas per database #697 [YuriSchimke]

* Optimized the SQL used to generate has_and_belongs_to_many queries by listing the join table first #693 [yerejm]

* Fixed that when using validation macros with a custom message, if you happened to use single quotes in the message string you would get a parsing error #657 [tonka]

* Fixed that Active Record would throw Broken Pipe errors with FCGI when the MySQL connection timed out instead of reconnecting #428 [Nicholas Seckar]

* Added options to specify an SSL connection for MySQL. Define the following attributes in the connection config (config/database.yml in Rails) to use it: sslkey, sslcert, sslca, sslcapath, sslcipher. To use SSL with no client certs, just set :sslca = '/dev/null'. http://dev.mysql.com/doc/mysql/en/secure-connections.html #604 [daniel@nightrunner.com]

* Added automatic dropping/creating of test tables for running the unit tests on all databases #587 [adelle@bullet.net.au]

* Fixed that find_by_* would fail when column names had numbers #670 [demetrius]

* Fixed the SQL Server adapter on a bunch of issues #667 [DeLynn]

    1. Created a new columns method that is much cleaner. 
    2. Corrected a problem with the select and select_all methods 
       that didn't account for the LIMIT clause being passed into raw SQL statements. 
    3. Implemented the string_to_time method in order to create proper instances of the time class. 
    4. Added logic to the simplified_type method that allows the database to specify the scale of float data. 
    5. Adjusted the quote_column_name to account for the fact that MS SQL is bothered by a forward slash in the data string.

* Fixed that the dynamic finder like find_all_by_something_boolean(false) didn't work #649 [lmarlow@yahoo.com]

* Added validates_each that validates each specified attribute against a block #610 [Jeremy Kemper]. Example:

    class Person < ActiveRecord::Base
      validates_each :first_name, :last_name do |record, attr|
        record.errors.add attr, 'starts with z.' if attr[0] == ?z
      end
    end

* Added :allow_nil as an explicit option for validates_length_of, so unless that's set to true having the attribute as nil will also return an error if a range is specified as :within #610 [Jeremy Kemper]

* Added that validates_* now accept blocks to perform validations #618 [Tim Bates]. Example:

    class Person < ActiveRecord::Base
      validate { |person| person.errors.add("title", "will never be valid") if SHOULD_NEVER_BE_VALID }
    end

* Addded validation for validate all the associated objects before declaring failure with validates_associated #618 [Tim Bates]

* Added keyword-style approach to defining the custom relational bindings #545 [Jamis Buck]. Example:

    class Project < ActiveRecord::Base
      primary_key "sysid"
      table_name "XYZ_PROJECT"
      inheritance_column { original_inheritance_column + "_id" }
    end

* Fixed Base#clone for use with PostgreSQL #565 [hanson@surgery.wisc.edu]


*1.6.0* (January 25th, 2005)

* Added that has_many association build and create methods can take arrays of record data like Base#create and Base#build to build/create multiple records at once.

* Added that Base#delete and Base#destroy both can take an array of ids to delete/destroy #336

* Added the option of supplying an array of attributes to Base#create, so that multiple records can be created at once.

* Added the option of supplying an array of ids and attributes to Base#update, so that multiple records can be updated at once (inspired by #526/Duane Johnson). Example

    people = { 1 => { "first_name" => "David" }, 2 => { "first_name" => "Jeremy"} }
    Person.update(people.keys, people.values)

* Added ActiveRecord::Base.timestamps_gmt that can be set to true to make the automated timestamping use GMT instead of local time #520 [Scott Baron]

* Added that update_all calls sanitize_sql on its updates argument, so stuff like MyRecord.update_all(['time = ?', Time.now]) works #519 [notahat]

* Fixed that the dynamic finders didn't treat nil as a "IS NULL" but rather "= NULL" case #515 [Demetrius]

* Added bind-named arrays for interpolating a group of ids or strings in conditions #528 [Jeremy Kemper]

* Added that has_and_belongs_to_many associations with additional attributes also can be created between unsaved objects and only committed to the database when Base#save is called on the associator #524 [Eric Anderson]

* Fixed that records fetched with piggy-back attributes or through rich has_and_belongs_to_many associations couldn't be saved due to the extra attributes not part of the table #522 [Eric Anderson]

* Added mass-assignment protection for the inheritance column -- regardless of a custom column is used or not

* Fixed that association proxies would fail === tests like PremiumSubscription === @account.subscription

* Fixed that column aliases didn't work as expected with the new MySql411 driver #507 [Demetrius]

* Fixed that find_all would produce invalid sql when called sequentialy #490 [Scott Baron]


*1.5.1* (January 18th, 2005)

* Fixed that the belongs_to and has_one proxy would fail a test like 'if project.manager' -- this unfortunately also means that you can't call methods like project.manager.build unless there already is a manager on the project #492 [Tim Bates]

* Fixed that the Ruby/MySQL adapter wouldn't connect if the password was empty #503 [Pelle]


*1.5.0* (January 17th, 2005)

* Fixed that unit tests for MySQL are now run as the "rails" user instead of root #455 [Eric Hodel]

* Added validates_associated that enables validation of objects in an unsaved association #398 [Tim Bates]. Example:

    class Book < ActiveRecord::Base
      has_many :pages
      belongs_to :library

      validates_associated :pages, :library
    end

* Added support for associating unsaved objects #402 [Tim Bates]. Rules that govern this addition:

    == Unsaved objects and associations

    You can manipulate objects and associations before they are saved to the database, but there is some special behaviour you should be
    aware of, mostly involving the saving of associated objects.

    === One-to-one associations

    * Assigning an object to a has_one association automatically saves that object, and the object being replaced (if there is one), in
      order to update their primary keys - except if the parent object is unsaved (new_record? == true).
    * If either of these saves fail (due to one of the objects being invalid) the assignment statement returns false and the assignment
      is cancelled.
    * If you wish to assign an object to a has_one association without saving it, use the #association.build method (documented below).
    * Assigning an object to a belongs_to association does not save the object, since the foreign key field belongs on the parent. It does
      not save the parent either.

    === Collections

    * Adding an object to a collection (has_many or has_and_belongs_to_many) automatically saves that object, except if the parent object
      (the owner of the collection) is not yet stored in the database.
    * If saving any of the objects being added to a collection (via #push or similar) fails, then #push returns false.
    * You can add an object to a collection without automatically saving it by using the #collection.build method (documented below).
    * All unsaved (new_record? == true) members of the collection are automatically saved when the parent is saved.

* Added replace to associations, so you can do project.manager.replace(new_manager) or project.milestones.replace(new_milestones) #402 [Tim Bates]

* Added build and create methods to has_one and belongs_to associations, so you can now do project.manager.build(attributes) #402 [Tim Bates]

* Added that if a before_* callback returns false, all the later callbacks and the associated action are cancelled. If an after_* callback returns false, all the later callbacks are cancelled. Callbacks are generally run in the order they are defined, with the exception of callbacks defined as methods on the model, which are called last. #402 [Tim Bates]

* Fixed that Base#== wouldn't work for multiple references to the same unsaved object #402 [Tim Bates]

* Fixed binary support for PostgreSQL #444 [alex@byzantine.no]

* Added a differenciation between AssociationCollection#size and -length. Now AssociationCollection#size returns the size of the 
  collection by executing a SELECT COUNT(*) query if the collection hasn't been loaded and calling collection.size if it has. If 
  it's more likely than not that the collection does have a size larger than zero and you need to fetch that collection afterwards, 
  it'll take one less SELECT query if you use length.

* Added Base#attributes that returns a hash of all the attributes with their names as keys and clones of their objects as values #433 [atyp.de]

* Fixed that foreign keys named the same as the association would cause stack overflow #437 [Eric Anderson]

* Fixed default scope of acts_as_list from "1" to "1 = 1", so it'll work in PostgreSQL (among other places) #427 [Alexey]

* Added Base#reload that reloads the attributes of an object from the database #422 [Andreas Schwarz]

* Added SQLite3 compatibility through the sqlite3-ruby adapter by Jamis Buck #381 [Jeremy Kemper]

* Added support for the new protocol spoken by MySQL 4.1.1+ servers for the Ruby/MySQL adapter that ships with Rails #440 [Matt Mower] 

* Added that Observers can use the observes class method instead of overwriting self.observed_class().

    Before:
      class ListSweeper < ActiveRecord::Base
        def self.observed_class() [ List, Item ]
      end

    After:
      class ListSweeper < ActiveRecord::Base
        observes List, Item
      end

* Fixed that conditions in has_many and has_and_belongs_to_many should be interpolated just like the finder_sql is

* Fixed Base#update_attribute to be indifferent to whether a string or symbol is used to describe the name

* Added Base#toggle(attribute) and Base#toggle!(attribute) that makes it easier to flip a switch or flag.

    Before: topic.update_attribute(:approved, !approved?)
    After : topic.toggle!(:approved)

* Added Base#increment!(attribute) and Base#decrement!(attribute) that also saves the records. Example:

    page.views # => 1
    page.increment!(:views) # executes an UPDATE statement
    page.views # => 2

    page.increment(:views).increment!(:views)
    page.views # => 4

* Added Base#increment(attribute) and Base#decrement(attribute) that encapsulates the += 1 and -= 1 patterns.




*1.14.2* (April 9th, 2005)

* Fixed calculations for the Oracle Adapter (closes #4626) [Michael Schoen]


*1.14.1* (April 6th, 2006)

* Fix type_name_with_module to handle type names that begin with '::'. Closes #4614. [Nicholas Seckar]

* Fixed that that multiparameter assignment doesn't work with aggregations (closes #4620) [Lars Pind]

* Enable Limit/Offset in Calculations (closes #4558) [lmarlow@yahoo.com]

* Fixed that loading including associations returns all results if Load IDs For Limited Eager Loading returns none (closes #4528) [Rick]

* Fixed HasManyAssociation#find bugs when :finder_sql is set #4600 [lagroue@free.fr]

* Allow AR::Base#respond_to? to behave when @attributes is nil [zenspider]

* Support eager includes when going through a polymorphic has_many association. [Rick]

* Added support for eagerly including polymorphic has_one associations. (closes #4525) [Rick]

    class Post < ActiveRecord::Base
      has_one :tagging, :as => :taggable
    end
    
    Post.find :all, :include => :tagging

* Added descriptive error messages for invalid has_many :through associations: going through :has_one or :has_and_belongs_to_many [Rick]

* Added support for going through a polymorphic has_many association: (closes #4401) [Rick]

    class PhotoCollection < ActiveRecord::Base
      has_many :photos, :as => :photographic
      belongs_to :firm
    end
     
    class Firm < ActiveRecord::Base
      has_many :photo_collections
      has_many :photos, :through => :photo_collections
    end

* Multiple fixes and optimizations in PostgreSQL adapter, allowing ruby-postgres gem to work properly. [ruben.nine@gmail.com]

* Fixed that AssociationCollection#delete_all should work even if the records of the association are not loaded yet. [Florian Weber]

* Changed those private ActiveRecord methods to take optional third argument :auto instead of nil for performance optimizations.  (closes #4456) [Stefan]

* Private ActiveRecord methods add_limit!, add_joins!, and add_conditions! take an OPTIONAL third argument 'scope' (closes #4456) [Rick]

* DEPRECATED: Using additional attributes on has_and_belongs_to_many associations. Instead upgrade your association to be a real join model [DHH]

* Fixed that records returned from has_and_belongs_to_many associations with additional attributes should be marked as read only (fixes #4512) [DHH]

* Do not implicitly mark recordss of has_many :through as readonly but do mark habtm records as readonly (eventually only on join tables without rich attributes). [Marcel Mollina Jr.]

* Fixed broken OCIAdapter #4457 [schoenm@earthlink.net]


*1.14.0* (March 27th, 2006)

* Replace 'rescue Object' with a finer grained rescue. Closes #4431. [Nicholas Seckar]

* Fixed eager loading so that an aliased table cannot clash with a has_and_belongs_to_many join table [Rick]

* Add support for :include to with_scope [andrew@redlinesoftware.com]

* Support the use of public synonyms with the Oracle adapter; required ruby-oci8 v0.1.14 #4390 [schoenm@earthlink.net]

* Change periods (.) in table aliases to _'s.  Closes #4251 [jeff@ministrycentered.com]

* Changed has_and_belongs_to_many join to INNER JOIN for Mysql 3.23.x.  Closes #4348 [Rick]

* Fixed issue that kept :select options from being scoped [Rick]

* Fixed db_schema_import when binary types are present #3101 [DHH]

* Fixed that MySQL enums should always be returned as strings #3501 [DHH]

* Change has_many :through to use the :source option to specify the source association.  :class_name is now ignored. [Rick Olson]

    class Connection < ActiveRecord::Base
      belongs_to :user
      belongs_to :channel
    end

    class Channel < ActiveRecord::Base
      has_many :connections
      has_many :contacts, :through => :connections, :class_name => 'User' # OLD
      has_many :contacts, :through => :connections, :source => :user      # NEW
    end

* Fixed DB2 adapter so nullable columns will be determines correctly now and quotes from column default values will be removed #4350 [contact@maik-schmidt.de]

* Allow overriding of find parameters in scoped has_many :through calls [Rick Olson]

  In this example, :include => false disables the default eager association from loading.  :select changes the standard
  select clause.  :joins specifies a join that is added to the end of the has_many :through query.
  
    class Post < ActiveRecord::Base
      has_many :tags, :through => :taggings, :include => :tagging do
        def add_joins_and_select
          find :all, :select => 'tags.*, authors.id as author_id', :include => false,
            :joins => 'left outer join posts on taggings.taggable_id = posts.id left outer join authors on posts.author_id = authors.id'
        end
      end
    end
    
* Fixed that schema changes while the database was open would break any connections to a SQLite database (now we reconnect if that error is throw) [DHH]

* Don't classify the has_one class when eager loading, it is already singular. Add tests. (closes #4117) [jonathan@bluewire.net.nz]

* Quit ignoring default :include options in has_many :through calls [Mark James]

* Allow has_many :through associations to find the source association by setting a custom class (closes #4307) [jonathan@bluewire.net.nz]

* Eager Loading support added for has_many :through => :has_many associations (see below).  [Rick Olson]

* Allow has_many :through to work on has_many associations (closes #3864) [sco@scottraymond.net]  Example:

    class Firm < ActiveRecord::Base
      has_many :clients
      has_many :invoices, :through => :clients
    end
  
    class Client < ActiveRecord::Base
      belongs_to :firm
      has_many   :invoices
    end
  
    class Invoice < ActiveRecord::Base
      belongs_to :client
    end

* Raise error when trying to select many polymorphic objects with has_many :through or :include (closes #4226) [josh@hasmanythrough.com]

* Fixed has_many :through to include :conditions set on the :through association. closes #4020 [jonathan@bluewire.net.nz]

* Fix that has_many :through honors the foreign key set by the belongs_to association in the join model (closes #4259) [andylien@gmail.com / Rick]

* SQL Server adapter gets some love #4298 [rtomayko@gmail.com]

* Added OpenBase database adapter that builds on top of the http://www.spice-of-life.net/ruby-openbase/ driver. All functionality except LIMIT/OFFSET is supported #3528 [derrickspell@cdmplus.com]

* Rework table aliasing to account for truncated table aliases.  Add smarter table aliasing when doing eager loading of STI associations. This allows you to use the association name in the order/where clause. [Jonathan Viney / Rick Olson] #4108 Example (SpecialComment is using STI):

    Author.find(:all, :include => { :posts => :special_comments }, :order => 'special_comments.body')

* Add AbstractAdapter#table_alias_for to create table aliases according to the rules of the current adapter. [Rick]

* Provide access to the underlying database connection through Adapter#raw_connection. Enables the use of db-specific methods without complicating the adapters. #2090 [Koz]

* Remove broken attempts at handling columns with a default of 'now()' in the postgresql adapter. #2257 [Koz]

* Added connection#current_database that'll return of the current database (only works in MySQL, SQL Server, and Oracle so far -- please help implement for the rest of the adapters) #3663 [Tom ward]

* Fixed that Migration#execute would have the table name prefix appended to its query #4110 [mark.imbriaco@pobox.com]

* Make all tinyint(1) variants act like boolean in mysql (tinyint(1) unsigned, etc.) [Jamis Buck]

* Use association's :conditions when eager loading. [jeremyevans0@gmail.com] #4144

* Alias the has_and_belongs_to_many join table on eager includes. #4106 [jeremyevans0@gmail.com]

  This statement would normally error because the projects_developers table is joined twice, and therefore joined_on would be ambiguous.

    Developer.find(:all, :include => {:projects => :developers}, :conditions => 'join_project_developers.joined_on IS NOT NULL')

* Oracle adapter gets some love #4230 [schoenm@earthlink.net]

    * Changes :text to CLOB rather than BLOB [Moses Hohman]
    * Fixes an issue with nil numeric length/scales (several)
    * Implements support for XMLTYPE columns [wilig / Kubo Takehiro]
    * Tweaks a unit test to get it all green again
    * Adds support for #current_database

* Added Base.abstract_class? that marks which classes are not part of the Active Record hierarchy #3704 [Rick Olson]

    class CachedModel < ActiveRecord::Base
      self.abstract_class = true
    end
    
    class Post < CachedModel
    end
    
    CachedModel.abstract_class?
    => true
    
    Post.abstract_class?
    => false

    Post.base_class
    => Post
    
    Post.table_name
    => 'posts'

* Allow :dependent options to be used with polymorphic joins. #3820 [Rick Olson]

    class Foo < ActiveRecord::Base
      has_many :attachments, :as => :attachable, :dependent => :delete_all
    end

* Nicer error message on has_many :through when :through reflection can not be found. #4042 [court3nay@gmail.com]

* Upgrade to Transaction::Simple 1.3 [Jamis Buck]

* Catch FixtureClassNotFound when using instantiated fixtures on a fixture that has no ActiveRecord model [Rick Olson]

* Allow ordering of calculated results and/or grouped fields in calculations [solo@gatelys.com]

* Make ActiveRecord::Base#save! return true instead of nil on success.  #4173 [johan@johansorensen.com]

* Dynamically set allow_concurrency.  #4044 [Stefan Kaes]

* Added Base#to_xml that'll turn the current record into a XML representation [DHH]. Example:

    topic.to_xml
  
  ...returns:
  
    <?xml version="1.0" encoding="UTF-8"?>
    <topic>
      <title>The First Topic</title>
      <author-name>David</author-name>
      <id type="integer">1</id>
      <approved type="boolean">false</approved>
      <replies-count type="integer">0</replies-count>
      <bonus-time type="datetime">2000-01-01 08:28:00</bonus-time>
      <written-on type="datetime">2003-07-16 09:28:00</written-on>
      <content>Have a nice day</content>
      <author-email-address>david@loudthinking.com</author-email-address>
      <parent-id></parent-id>
      <last-read type="date">2004-04-15</last-read>
    </topic>
  
  ...and you can configure with:
  
    topic.to_xml(:skip_instruct => true, :except => [ :id, bonus_time, :written_on, replies_count ])
  
  ...that'll return:
  
    <topic>
      <title>The First Topic</title>
      <author-name>David</author-name>
      <approved type="boolean">false</approved>
      <content>Have a nice day</content>
      <author-email-address>david@loudthinking.com</author-email-address>
      <parent-id></parent-id>
      <last-read type="date">2004-04-15</last-read>
    </topic>
  
  You can even do load first-level associations as part of the document:
  
    firm.to_xml :include => [ :account, :clients ]
  
  ...that'll return something like:
  
    <?xml version="1.0" encoding="UTF-8"?>
    <firm>
      <id type="integer">1</id>
      <rating type="integer">1</rating>
      <name>37signals</name>
      <clients>
        <client>
          <rating type="integer">1</rating>
          <name>Summit</name>
        </client>
        <client>
          <rating type="integer">1</rating>
          <name>Microsoft</name>
        </client>
      </clients>
      <account>
        <id type="integer">1</id>
        <credit-limit type="integer">50</credit-limit>
      </account>
    </firm>  

* Allow :counter_cache to take a column name for custom counter cache columns [Jamis Buck]

* Documentation fixes for :dependent [robby@planetargon.com]

* Stop the MySQL adapter crashing when views are present. #3782 [Jonathan Viney]

* Don't classify the belongs_to class, it is already singular #4117 [keithm@infused.org]

* Allow set_fixture_class to take Classes instead of strings for a class in a module.  Raise FixtureClassNotFound if a fixture can't load.  [Rick Olson]

* Fix quoting of inheritance column for STI eager loading #4098 [Jonathan Viney <jonathan@bluewire.net.nz>]

* Added smarter table aliasing for eager associations for multiple self joins #3580 [Rick Olson]

    * The first time a table is referenced in a join, no alias is used.
    * After that, the parent class name and the reflection name are used.
    
        Tree.find(:all, :include => :children) # LEFT OUTER JOIN trees AS tree_children ...
    
    * Any additional join references get a numerical suffix like '_2', '_3', etc.

* Fixed eager loading problems with single-table inheritance #3580 [Rick Olson]. Post.find(:all, :include => :special_comments) now returns all posts, and any special comments that the posts may have. And made STI work with has_many :through and polymorphic belongs_to.

* Added cascading eager loading that allows for queries like Author.find(:all, :include=> { :posts=> :comments }), which will fetch all authors, their posts, and the comments belonging to those posts in a single query (using LEFT OUTER JOIN) #3913 [anna@wota.jp]. Examples:

    # cascaded in two levels
    >> Author.find(:all, :include=>{:posts=>:comments})
    => authors
         +- posts
              +- comments
    
    # cascaded in two levels and normal association
    >> Author.find(:all, :include=>[{:posts=>:comments}, :categorizations])
    => authors
         +- posts
              +- comments
         +- categorizations
    
    # cascaded in two levels with two has_many associations
    >> Author.find(:all, :include=>{:posts=>[:comments, :categorizations]})
    => authors
         +- posts
              +- comments
              +- categorizations
    
    # cascaded in three levels
    >> Company.find(:all, :include=>{:groups=>{:members=>{:favorites}}})
    => companies
         +- groups
              +- members
                   +- favorites
    
* Make counter cache work when replacing an association #3245 [eugenol@gmail.com]

* Make migrations verbose [Jamis Buck]

* Make counter_cache work with polymorphic belongs_to [Jamis Buck]

* Fixed that calling HasOneProxy#build_model repeatedly would cause saving to happen #4058 [anna@wota.jp]

* Added Sybase database adapter that relies on the Sybase Open Client bindings (see http://raa.ruby-lang.org/project/sybase-ctlib) #3765 [John Sheets]. It's almost completely Active Record compliant (including migrations), but has the following caveats:

    * Does not support DATE SQL column types; use DATETIME instead.
    * Date columns on HABTM join tables are returned as String, not Time.
    * Insertions are potentially broken for :polymorphic join tables
    * BLOB column access not yet fully supported

* Clear stale, cached connections left behind by defunct threads. [Jeremy Kemper]

* CHANGED DEFAULT: set ActiveRecord::Base.allow_concurrency to false.  Most AR usage is in single-threaded applications. [Jeremy Kemper]

* Renamed the "oci" adapter to "oracle", but kept the old name as an alias #4017 [schoenm@earthlink.net]

* Fixed that Base.save should always return false if the save didn't succeed, including if it has halted by before_save's #1861, #2477 [DHH]

* Speed up class -> connection caching and stale connection verification.  #3979 [Stefan Kaes]

* Add set_fixture_class to allow the use of table name accessors with models which use set_table_name. [Kevin Clark]

* Added that fixtures to placed in subdirectories of the main fixture files are also loaded #3937 [dblack@wobblini.net]

* Define attribute query methods to avoid method_missing calls. #3677 [jonathan@bluewire.net.nz]

* ActiveRecord::Base.remove_connection explicitly closes database connections and doesn't corrupt the connection cache. Introducing the disconnect! instance method for the PostgreSQL, MySQL, and SQL Server adapters; implementations for the others are welcome.  #3591 [Simon Stapleton, Tom Ward]

* Added support for nested scopes #3407 [anna@wota.jp]. Examples:

    Developer.with_scope(:find => { :conditions => "salary > 10000", :limit => 10 }) do
      Developer.find(:all)     # => SELECT * FROM developers WHERE (salary > 10000) LIMIT 10

      # inner rule is used. (all previous parameters are ignored)
      Developer.with_exclusive_scope(:find => { :conditions => "name = 'Jamis'" }) do
        Developer.find(:all)   # => SELECT * FROM developers WHERE (name = 'Jamis')
      end

      # parameters are merged
      Developer.with_scope(:find => { :conditions => "name = 'Jamis'" }) do
        Developer.find(:all)   # => SELECT * FROM developers WHERE (( salary > 10000 ) AND ( name = 'Jamis' )) LIMIT 10
      end
    end

* Fixed db2 connection with empty user_name and auth options #3622 [phurley@gmail.com]

* Fixed validates_length_of to work on UTF-8 strings by using characters instead of bytes #3699 [Masao Mutoh]

* Fixed that reflections would bleed across class boundaries in single-table inheritance setups #3796 [lars@pind.com]

* Added calculations: Base.count, Base.average, Base.sum, Base.minimum, Base.maxmium, and the generic Base.calculate. All can be used with :group and :having. Calculations and statitics need no longer require custom SQL. #3958 [Rick Olson]. Examples:

    Person.average :age
    Person.minimum :age
    Person.maximum :age
    Person.sum :salary, :group => :last_name

* Renamed Errors#count to Errors#size but kept an alias for the old name (and included an alias for length too) #3920 [contact@lukeredpath.co.uk]

* Reflections don't attempt to resolve module nesting of association classes. Simplify type computation. [Jeremy Kemper]

* Improved the Oracle OCI Adapter with better performance for column reflection (from #3210), fixes to migrations (from #3476 and #3742), tweaks to unit tests (from #3610), and improved documentation (from #2446) #3879 [Aggregated by schoenm@earthlink.net]

* Fixed that the schema_info table used by ActiveRecord::Schema.define should respect table pre- and suffixes #3834 [rubyonrails@atyp.de]

* Added :select option to Base.count that'll allow you to select something else than * to be counted on. Especially important for count queries using DISTINCT #3839 [skaes]

* Correct syntax error in mysql DDL,  and make AAACreateTablesTest run first [Bob Silva]

* Allow :include to be used with has_many :through associations #3611 [Michael Schoen]

* PostgreSQL: smarter schema dumps using pk_and_sequence_for(table).  #2920 [Blair Zajac]

* SQLServer: more compatible limit/offset emulation.  #3779 [Tom Ward]

* Polymorphic join support for has_one associations (has_one :foo, :as => :bar)  #3785 [Rick Olson]

* PostgreSQL: correctly parse negative integer column defaults.  #3776 [bellis@deepthought.org]

* Fix problems with count when used with :include [Jeremy Hopple and Kevin Clark]

* ActiveRecord::RecordInvalid now states which validations failed in its default error message [Tobias Luetke]

* Using AssociationCollection#build with arrays of hashes should call build, not create [DHH]

* Remove definition of reloadable? from ActiveRecord::Base to make way for new Reloadable code. [Nicholas Seckar]

* Fixed schema handling for DB2 adapter that didn't work: an initial schema could be set, but it wasn't used when getting tables and indexes #3678 [Maik Schmidt]

* Support the :column option for remove_index with the PostgreSQL adapter. #3661 [shugo@ruby-lang.org]

* Add documentation for add_index and remove_index. #3600 [Manfred Stienstra <m.stienstra@fngtps.com>]

* If the OCI library is not available, raise an exception indicating as much. #3593 [schoenm@earthlink.net]

* Add explicit :order in finder tests as postgresql orders results differently by default. #3577. [Rick Olson]

* Make dynamic finders honor additional passed in :conditions. #3569 [Oleg Pudeyev <pudeyo@rpi.edu>, Marcel Molina Jr.]

* Show a meaningful error when the DB2 adapter cannot be loaded due to missing dependencies. [Nicholas Seckar]

* Make .count work for has_many associations with multi line finder sql [schoenm@earthlink.net]

* Add AR::Base.base_class for querying the ancestor AR::Base subclass [Jamis Buck]

* Allow configuration of the column used for optimistic locking [wilsonb@gmail.com]

* Don't hardcode 'id' in acts as list.  [ror@philippeapril.com]

* Fix date errors for SQLServer in association tests. #3406 [kevin.clark@gmal.com]

* Escape database name in MySQL adapter when creating and dropping databases. #3409 [anna@wota.jp]

* Disambiguate table names for columns in validates_uniquness_of's WHERE clause. #3423 [alex.borovsky@gmail.com]

* .with_scope imposed create parameters now bypass attr_protected [Tobias Luetke]

* Don't raise an exception when there are more keys than there are named bind variables when sanitizing conditions. [Marcel Molina Jr.]

* Multiple enhancements and adjustments to DB2 adaptor. #3377 [contact@maik-schmidt.de]

* Sanitize scoped conditions. [Marcel Molina Jr.]

* Added option to Base.reflection_of_all_associations to specify a specific association to scope the call. For example Base.reflection_of_all_associations(:has_many) [DHH]

* Added ActiveRecord::SchemaDumper.ignore_tables which tells SchemaDumper which tables to ignore. Useful for tables with funky column like the ones required for tsearch2. [TobiasLuetke]

* SchemaDumper now doesn't fail anymore when there are unknown column types in the schema. Instead the table is ignored and a Comment is left in the schema.rb. [TobiasLuetke]

* Fixed that saving a model with multiple habtm associations would only save the first one.  #3244 [yanowitz-rubyonrails@quantumfoam.org, Florian Weber]

* Fix change_column to work with PostgreSQL 7.x and 8.x.  #3141 [wejn@box.cz, Rick Olson, Scott Barron] 

* removed :piggyback in favor of just allowing :select on :through associations. [Tobias Luetke] 

* made method missing delegation to class methods on relation target work on :through associations. [Tobias Luetke] 

* made .find() work on :through relations. [Tobias Luetke] 

* Fix typo in association docs. #3296. [Blair Zajac]

* Fixed :through relations when using STI inherited classes would use the inherited class's name as foreign key on the join model [Tobias Luetke] 

*1.13.2* (December 13th, 2005)

* Become part of Rails 1.0

* MySQL: allow encoding option for mysql.rb driver.  [Jeremy Kemper]

* Added option inheritance for find calls on has_and_belongs_to_many and has_many assosociations [DHH]. Example:

    class Post
      has_many :recent_comments, :class_name => "Comment", :limit => 10, :include => :author
    end
    
    post.recent_comments.find(:all) # Uses LIMIT 10 and includes authors
    post.recent_comments.find(:all, :limit => nil) # Uses no limit but include authors
    post.recent_comments.find(:all, :limit => nil, :include => nil) # Uses no limit and doesn't include authors

* Added option to specify :group, :limit, :offset, and :select options from find on has_and_belongs_to_many and has_many assosociations [DHH]

* MySQL: fixes for the bundled mysql.rb driver.  #3160 [Justin Forder]

* SQLServer: fix obscure optimistic locking bug.  #3068 [kajism@yahoo.com]

* SQLServer: support uniqueidentifier columns.  #2930 [keithm@infused.org]

* SQLServer: cope with tables names qualified by owner.  #3067 [jeff@ministrycentered.com]

* SQLServer: cope with columns with "desc" in the name.  #1950 [Ron Lusk, Ryan Tomayko]

* SQLServer: cope with primary keys with "select" in the name.  #3057 [rdifrango@captechventures.com]

* Oracle: active? performs a select instead of a commit.  #3133 [Michael Schoen]

* MySQL: more robust test for nullified result hashes.  #3124 [Stefan Kaes]

* Reloading an instance refreshes its aggregations as well as its associations.  #3024 [François Beausolei]

* Fixed that using :include together with :conditions array in Base.find would cause NoMethodError #2887 [Paul Hammmond]

* PostgreSQL: more robust sequence name discovery.  #3087 [Rick Olson]

* Oracle: use syntax compatible with Oracle 8.  #3131 [Michael Schoen]

* MySQL: work around ruby-mysql/mysql-ruby inconsistency with mysql.stat.  Eliminate usage of mysql.ping because it doesn't guarantee reconnect.  Explicitly close and reopen the connection instead.  [Jeremy Kemper]

* Added preliminary support for polymorphic associations [DHH]

* Added preliminary support for join models [DHH]

* Allow validate_uniqueness_of to be scoped by more than just one column.  #1559. [jeremy@jthopple.com, Marcel Molina Jr.]

* Firebird: active? and reconnect! methods for handling stale connections.  #428 [Ken Kunz <kennethkunz@gmail.com>]

* Firebird: updated for FireRuby 0.4.0.  #3009 [Ken Kunz <kennethkunz@gmail.com>]

* MySQL and PostgreSQL: active? compatibility with the pure-Ruby driver.  #428 [Jeremy Kemper]

* Oracle: active? check pings the database rather than testing the last command status.  #428 [Michael Schoen]

* SQLServer: resolve column aliasing/quoting collision when using limit or offset in an eager find.  #2974 [kajism@yahoo.com]

* Reloading a model doesn't lose track of its connection.  #2996 [junk@miriamtech.com, Jeremy Kemper]

* Fixed bug where using update_attribute after pushing a record to a habtm association of the object caused duplicate rows in the join table. #2888 [colman@rominato.com, Florian Weber, Michael Schoen]

* MySQL, PostgreSQL: reconnect! also reconfigures the connection.  Otherwise, the connection 'loses' its settings if it times out and is reconnected.  #2978 [Shugo Maeda]

* has_and_belongs_to_many: use JOIN instead of LEFT JOIN.  [Jeremy Kemper]

* MySQL: introduce :encoding option to specify the character set for client, connection, and results.  Only available for MySQL 4.1 and later with the mysql-ruby driver.  Do SHOW CHARACTER SET in mysql client to see available encodings.  #2975 [Shugo Maeda]

* Add tasks to create, drop and rebuild the MySQL and PostgreSQL test  databases. [Marcel Molina Jr.]

* Correct boolean handling in generated reader methods.  #2945 [don.park@gmail.com, Stefan Kaes]

* Don't generate read methods for columns whose names are not valid ruby method names.  #2946 [Stefan Kaes]

* Document :force option to create_table.  #2921 [Blair Zajac <blair@orcaware.com>]

* Don't add the same conditions twice in has_one finder sql.  #2916 [Jeremy Evans]

* Rename Version constant to VERSION. #2802 [Marcel Molina Jr.]

* Introducing the Firebird adapter.  Quote columns and use attribute_condition more consistently.  Setup guide: http://wiki.rubyonrails.com/rails/pages/Firebird+Adapter  #1874 [Ken Kunz <kennethkunz@gmail.com>]

* SQLServer: active? and reconnect! methods for handling stale connections.  #428 [kajism@yahoo.com, Tom Ward <tom@popdog.net>]

* Associations handle case-equality more consistently: item.parts.is_a?(Array) and item.parts === Array.  #1345 [MarkusQ@reality.com]

* SQLServer: insert uses given primary key value if not nil rather than SELECT @@IDENTITY.  #2866 [kajism@yahoo.com, Tom Ward <tom@popdog.net>]

* Oracle: active? and reconnect! methods for handling stale connections.  Optionally retry queries after reconnect.  #428 [Michael Schoen <schoenm@earthlink.net>]

* Correct documentation for Base.delete_all.  #1568 [Newhydra]

* Oracle: test case for column default parsing.  #2788 [Michael Schoen <schoenm@earthlink.net>]

* Update documentation for Migrations.  #2861 [Tom Werner <tom@cube6media.com>]

* When AbstractAdapter#log rescues an exception, attempt to detect and reconnect to an inactive database connection.  Connection adapter must respond to the active? and reconnect! instance methods.  Initial support for PostgreSQL, MySQL, and SQLite.  Make certain that all statements which may need reconnection are performed within a logged block: for example, this means no avoiding log(sql, name) { } if @logger.nil?  #428 [Jeremy Kemper]

* Oracle: Much faster column reflection.  #2848 [Michael Schoen <schoenm@earthlink.net>]

* Base.reset_sequence_name analogous to reset_table_name (mostly useful for testing).  Base.define_attr_method allows nil values.  [Jeremy Kemper]

* PostgreSQL: smarter sequence name defaults, stricter last_insert_id, warn on pk without sequence.  [Jeremy Kemper]

* PostgreSQL: correctly discover custom primary key sequences.  #2594 [Blair Zajac <blair@orcaware.com>, meadow.nnick@gmail.com, Jeremy Kemper]

* SQLServer: don't report limits for unsupported field types.  #2835 [Ryan Tomayko]

* Include the Enumerable module in ActiveRecord::Errors.  [Rick Bradley <rick@rickbradley.com>]

* Add :group option, correspond to GROUP BY, to the find method and to the has_many association.  #2818 [rubyonrails@atyp.de]

* Don't cast nil or empty strings to a dummy date.  #2789 [Rick Bradley <rick@rickbradley.com>]

* acts_as_list plays nicely with inheritance by remembering the class which declared it.  #2811 [rephorm@rephorm.com]

* Fix sqlite adaptor's detection of missing dbfile or database declaration. [Nicholas Seckar]

* Fixed acts_as_list for definitions without an explicit :order #2803 [jonathan@bluewire.net.nz]

* Upgrade bundled ruby-mysql 0.2.4 with mysql411 shim (see #440) to ruby-mysql 0.2.6 with a patchset for 4.1 protocol support.  Local change [301] is now a part of the main driver; reapplied local change [2182].  Removed GC.start from Result.free.  [tommy@tmtm.org, akuroda@gmail.com, Doug Fales <doug.fales@gmail.com>, Jeremy Kemper]

* Correct handling of complex order clauses with SQL Server limit emulation.  #2770 [Tom Ward <tom@popdog.net>, Matt B.]

* Correct whitespace problem in Oracle default column value parsing.  #2788 [rick@rickbradley.com]

* Destroy associated has_and_belongs_to_many records after all before_destroy callbacks but before destroy.  This allows you to act on the habtm association as you please while preserving referential integrity.  #2065 [larrywilliams1@gmail.com, sam.kirchmeier@gmail.com, elliot@townx.org, Jeremy Kemper]

* Deprecate the old, confusing :exclusively_dependent option in favor of :dependent => :delete_all.  [Jeremy Kemper]

* More compatible Oracle column reflection.  #2771 [Ryan Davis <ryand-ruby@zenspider.com>, Michael Schoen <schoenm@earthlink.net>]


*1.13.0* (November 7th, 2005)

* Fixed faulty regex in get_table_name method (SQLServerAdapter) #2639 [Ryan Tomayko]

* Added :include as an option for association declarations [DHH]. Example:

    has_many :posts, :include => [ :author, :comments ]

* Rename Base.constrain to Base.with_scope so it doesn't conflict with existing concept of database constraints.  Make scoping more robust: uniform method => parameters, validated method names and supported finder parameters, raise exception on nested scopes.  [Jeremy Kemper]  Example:

    Comment.with_scope(:find => { :conditions => 'active=true' }, :create => { :post_id => 5 }) do
      # Find where name = ? and active=true
      Comment.find :all, :conditions => ['name = ?', name]
      # Create comment associated with :post_id
      Comment.create :body => "Hello world"
    end

* Fixed that SQL Server should ignore :size declarations on anything but integer and string in the agnostic schema representation #2756 [Ryan Tomayko]

* Added constrain scoping for creates using a hash of attributes bound to the :creation key [DHH]. Example:

    Comment.constrain(:creation => { :post_id => 5 }) do
      # Associated with :post_id
      Comment.create :body => "Hello world"
    end
  
  This is rarely used directly, but allows for find_or_create on associations. So you can do:
  
    # If the tag doesn't exist, a new one is created that's associated with the person
    person.tags.find_or_create_by_name("Summer")

* Added find_or_create_by_X as a second type of dynamic finder that'll create the record if it doesn't already exist [DHH]. Example:

    # No 'Summer' tag exists
    Tag.find_or_create_by_name("Summer") # equal to Tag.create(:name => "Summer")
    
    # Now the 'Summer' tag does exist
    Tag.find_or_create_by_name("Summer") # equal to Tag.find_by_name("Summer")

* Added extension capabilities to has_many and has_and_belongs_to_many proxies [DHH]. Example:

    class Account < ActiveRecord::Base
      has_many :people do
        def find_or_create_by_name(name)
          first_name, *last_name = name.split
          last_name = last_name.join " "

          find_or_create_by_first_name_and_last_name(first_name, last_name)
        end
      end
    end

    person = Account.find(:first).people.find_or_create_by_name("David Heinemeier Hansson")
    person.first_name # => "David"
    person.last_name  # => "Heinemeier Hansson"

  Note that the anoymous module must be declared using brackets, not do/end (due to order of evaluation).

* Omit internal dtproperties table from SQLServer table list.  #2729 [rtomayko@gmail.com]

* Quote column names in generated SQL.  #2728 [rtomayko@gmail.com]

* Correct the pure-Ruby MySQL 4.1.1 shim's version test.  #2718 [Jeremy Kemper]

* Add Model.create! to match existing model.save! method.  When save! raises RecordInvalid, you can catch the exception, retrieve the invalid record (invalid_exception.record), and see its errors (invalid_exception.record.errors).  [Jeremy Kemper]

* Correct fixture behavior when table name pluralization is off.  #2719 [Rick Bradley <rick@rickbradley.com>]

* Changed :dbfile to :database for SQLite adapter for consistency (old key still works as an alias) #2644 [Dan Peterson]

* Added migration support for Oracle #2647 [Michael Schoen]

* Worked around that connection can't be reset if allow_concurrency is off.  #2648 [Michael Schoen <schoenm@earthlink.net>]

* Fixed SQL Server adapter to pass even more tests and do even better #2634 [rtomayko@gmail.com]

* Fixed SQL Server adapter so it honors options[:conditions] when applying :limits #1978 [Tom Ward]

* Added migration support to SQL Server adapter (please someone do the same for Oracle and DB2) #2625 [Tom Ward]

* Use AR::Base.silence rather than AR::Base.logger.silence in fixtures to preserve Log4r compatibility.  #2618 [dansketcher@gmail.com]

* Constraints are cloned so they can't be inadvertently modified while they're
in effect.  Added :readonly finder constraint.  Calling an association collection's class method (Part.foobar via item.parts.foobar) constrains :readonly => false since the collection's :joins constraint would otherwise force it to true.  [Jeremy Kemper <rails@bitsweat.net>]

* Added :offset and :limit to the kinds of options that Base.constrain can use #2466 [duane.johnson@gmail.com]

* Fixed handling of nil number columns on Oracle and cleaned up tests for Oracle in general #2555 [schoenm@earthlink.net]

* Added quoted_true and quoted_false methods and tables to db2_adapter and cleaned up tests for DB2 #2493, #2624 [maik schmidt]


*1.12.2* (October 26th, 2005)

* Allow symbols to rename columns when using SQLite adapter. #2531 [kevin.clark@gmail.com]

* Map Active Record time to SQL TIME.  #2575, #2576 [Robby Russell <robby@planetargon.com>]

* Clarify semantics of ActiveRecord::Base#respond_to?  #2560 [skaes@web.de]

* Fixed Association#clear for associations which have not yet been accessed. #2524 [Patrick Lenz <patrick@lenz.sh>]

* HABTM finders shouldn't return readonly records.  #2525 [Patrick Lenz <patrick@lenz.sh>]

* Make all tests runnable on their own. #2521. [Blair Zajac <blair@orcaware.com>]


*1.12.1* (October 19th, 2005)

* Always parenthesize :conditions options so they may be safely combined with STI and constraints.

* Correct PostgreSQL primary key sequence detection.  #2507 [tmornini@infomania.com]

* Added support for using limits in eager loads that involve has_many and has_and_belongs_to_many associations


*1.12.0* (October 16th, 2005)

* Update/clean up documentation (rdoc)

* PostgreSQL sequence support.  Use set_sequence_name in your model class to specify its primary key sequence.  #2292 [Rick Olson <technoweenie@gmail.com>, Robby Russell <robby@planetargon.com>]

* Change default logging colors to work on both white and black backgrounds. [Sam Stephenson]

* YAML fixtures support ordered hashes for fixtures with foreign key dependencies in the same table.  #1896 [purestorm@ggnore.net]

* :dependent now accepts :nullify option. Sets the foreign key of the related objects to NULL instead of deleting them. #2015 [Robby Russell <robby@planetargon.com>] 

* Introduce read-only records.  If you call object.readonly! then it will mark the object as read-only and raise ReadOnlyRecord if you call object.save.  object.readonly? reports whether the object is read-only.  Passing :readonly => true to any finder method will mark returned records as read-only.  The :joins option now implies :readonly, so if you use this option, saving the same record will now fail.  Use find_by_sql to work around.

* Avoid memleak in dev mode when using fcgi

* Simplified .clear on active record associations by using the existing delete_records method. #1906 [Caleb <me@cpb.ca>]

* Delegate access to a customized primary key to the conventional id method. #2444. [Blair Zajac <blair@orcaware.com>]

* Fix errors caused by assigning a has-one or belongs-to property to itself

* Add ActiveRecord::Base.schema_format setting which specifies how databases should be dumped [Sam Stephenson]

* Update DB2 adapter. #2206. [contact@maik-schmidt.de]

* Corrections to SQLServer native data types. #2267.  [rails.20.clarry@spamgourmet.com]

* Deprecated ActiveRecord::Base.threaded_connection in favor of ActiveRecord::Base.allow_concurrency.

* Protect id attribute from mass assigment even when the primary key is set to something else. #2438. [Blair Zajac <blair@orcaware.com>]

* Misc doc fixes (typos/grammar/etc.). #2430. [coffee2code]

* Add test coverage for content_columns. #2432. [coffee2code]

* Speed up for unthreaded environments. #2431. [skaes@web.de]

* Optimization for Mysql selects using mysql-ruby extension greater than 2.6.3.  #2426. [skaes@web.de]

* Speed up the setting of table_name. #2428. [skaes@web.de]

* Optimize instantiation of STI subclass records. In partial fullfilment of #1236. [skaes@web.de]

* Fix typo of 'constrains' to 'contraints'. #2069. [Michael Schuerig <michael@schuerig.de>]

* Optimization refactoring for add_limit_offset!. In partial fullfilment of #1236. [skaes@web.de]

* Add ability to get all siblings, including the current child, with acts_as_tree. Recloses #2140. [Michael Schuerig <michael@schuerig.de>]

* Add geometric type for postgresql adapter. #2233 [akaspick@gmail.com]

* Add option (true by default) to generate reader methods for each attribute of a record to avoid the overhead of calling method missing. In partial fullfilment of #1236. [skaes@web.de]

* Add convenience predicate methods on Column class. In partial fullfilment of #1236. [skaes@web.de]

* Raise errors when invalid hash keys are passed to ActiveRecord::Base.find. #2363  [Chad Fowler <chad@chadfowler.com>, Nicholas Seckar]

* Added :force option to create_table that'll try to drop the table if it already exists before creating

* Fix transactions so that calling return while inside a transaction will not leave an open transaction on the connection. [Nicholas Seckar]

* Use foreign_key inflection uniformly.  #2156 [Blair Zajac <blair@orcaware.com>]

* model.association.clear should destroy associated objects if :dependent => true instead of nullifying their foreign keys.  #2221 [joergd@pobox.com, ObieFernandez <obiefernandez@gmail.com>]

* Returning false from before_destroy should cancel the action.  #1829 [Jeremy Huffman]

* Recognize PostgreSQL NOW() default as equivalent to CURRENT_TIMESTAMP or CURRENT_DATE, depending on the column's type.  #2256 [mat <mat@absolight.fr>]

* Extensive documentation for the abstract database adapter.  #2250 [François Beausoleil <fbeausoleil@ftml.net>]

* Clean up Fixtures.reset_sequences for PostgreSQL.  Handle tables with no rows and models with custom primary keys.  #2174, #2183 [jay@jay.fm, Blair Zajac <blair@orcaware.com>]

* Improve error message when nil is assigned to an attr which validates_size_of within a range.  #2022 [Manuel Holtgrewe <purestorm@ggnore.net>]

* Make update_attribute use the same writer method that update_attributes uses.
 #2237 [trevor@protocool.com]

* Make migrations honor table name prefixes and suffixes. #2298 [Jakob S, Marcel Molina]

* Correct and optimize PostgreSQL bytea escaping.  #1745, #1837 [dave@cherryville.org, ken@miriamtech.com, bellis@deepthought.org]

* Fixtures should only reset a PostgreSQL sequence if it corresponds to an integer primary key named id.  #1749 [chris@chrisbrinker.com]

* Standardize the interpretation of boolean columns in the Mysql and Sqlite adapters. (Use MysqlAdapter.emulate_booleans = false to disable this behavior)

* Added new symbol-driven approach to activating observers with Base#observers= [DHH]. Example:

    ActiveRecord::Base.observers = :cacher, :garbage_collector

* Added AbstractAdapter#select_value and AbstractAdapter#select_values as convenience methods for selecting single values, instead of hashes, of the first column in a SELECT #2283 [solo@gatelys.com]

* Wrap :conditions in parentheses to prevent problems with OR's #1871 [Jamis Buck]

* Allow the postgresql adapter to work with the SchemaDumper. [Jamis Buck]

* Add ActiveRecord::SchemaDumper for dumping a DB schema to a pure-ruby file, making it easier to consolidate large migration lists and port database schemas between databases. [Jamis Buck]

* Fixed migrations for Windows when using more than 10 [David Naseby]

* Fixed that the create_x method from belongs_to wouldn't save the association properly #2042 [Florian Weber]

* Fixed saving a record with two unsaved belongs_to associations pointing to the same object #2023 [Tobias Luetke]

* Improved migrations' behavior when the schema_info table is empty. [Nicholas Seckar]

* Fixed that Observers didn't observe sub-classes #627 [Florian Weber]

* Fix eager loading error messages, allow :include to specify tables using strings or symbols. Closes #2222 [Marcel Molina]

* Added check for RAILS_CONNECTION_ADAPTERS on startup and only load the connection adapters specified within if its present (available in Rails through config.connection_adapters using the new config) #1958 [skae]

* Fixed various problems with has_and_belongs_to_many when using customer finder_sql #2094 [Florian Weber]

* Added better exception error when unknown column types are used with migrations #1814 [fbeausoleil@ftml.net]

* Fixed "connection lost" issue with the bundled Ruby/MySQL driver (would kill the app after 8 hours of inactivity) #2163, #428 [kajism@yahoo.com]

* Fixed comparison of Active Record objects so two new objects are not equal #2099 [deberg]

* Fixed that the SQL Server adapter would sometimes return DBI::Timestamp objects instead of Time #2127 [Tom Ward]

* Added the instance methods #root and #ancestors on acts_as_tree and fixed siblings to not include the current node #2142, #2140 [coffee2code]

* Fixed that Active Record would call SHOW FIELDS twice (or more) for the same model when the cached results were available #1947 [sd@notso.net]

* Added log_level and use_silence parameter to ActiveRecord::Base.benchmark. The first controls at what level the benchmark statement will be logged (now as debug, instead of info) and the second that can be passed false to include all logging statements during the benchmark block/

* Make sure the schema_info table is created before querying the current version #1903

* Fixtures ignore table name prefix and suffix #1987 [Jakob S]

* Add documentation for index_type argument to add_index method for migrations #2005 [blaine@odeo.com]

* Modify read_attribute to allow a symbol argument #2024 [Ken Kunz]

* Make destroy return self #1913 [sebastian.kanthak@muehlheim.de]

* Fix typo in validations documentation #1938 [court3nay]

* Make acts_as_list work for insert_at(1) #1966 [hensleyl@papermountain.org]

* Fix typo in count_by_sql documentation #1969 [Alexey Verkhovsky]

* Allow add_column and create_table to specify NOT NULL #1712 [emptysands@gmail.com]

* Fix create_table so that id column is implicitly added [Rick Olson]

* Default sequence names for Oracle changed to #{table_name}_seq, which is the most commonly used standard. In addition, a new method ActiveRecord::Base#set_sequence_name allows the developer to set the sequence name per model. This is a non-backwards-compatible change -- anyone using the old-style "rails_sequence" will need to either create new sequences, or set: ActiveRecord::Base.set_sequence_name = "rails_sequence" #1798

* OCIAdapter now properly handles synonyms, which are commonly used to separate out the schema owner from the application user #1798

* Fixed the handling of camelCase columns names in Oracle #1798

* Implemented for OCI the Rakefile tasks of :clone_structure_to_test, :db_structure_dump, and :purge_test_database, which enable Oracle folks to enjoy all the agile goodness of Rails for testing. Note that the current implementation is fairly limited -- only tables and sequences are cloned, not constraints or indexes. A full clone in Oracle generally requires some manual effort, and is version-specific. Post 9i, Oracle recommends the use of the DBMS_METADATA package, though that approach requires editing of the physical characteristics generated #1798

* Fixed the handling of multiple blob columns in Oracle if one or more of them are null #1798

* Added support for calling constrained class methods on has_many and has_and_belongs_to_many collections #1764 [Tobias Luetke]

    class Comment < AR:B
      def self.search(q)
        find(:all, :conditions => ["body = ?", q])
      end
    end 

    class Post < AR:B
      has_many :comments
    end

    Post.find(1).comments.search('hi') # => SELECT * from comments WHERE post_id = 1 AND body = 'hi'
  
  NOTICE: This patch changes the underlying SQL generated by has_and_belongs_to_many queries. If your relying on that, such as
  by explicitly referencing the old t and j aliases, you'll need to update your code. Of course, you _shouldn't_ be relying on
  details like that no less than you should be diving in to touch private variables. But just in case you do, consider yourself
  noticed :)

* Added migration support for SQLite (using temporary tables to simulate ALTER TABLE) #1771 [Sam Stephenson]

* Remove extra definition of supports_migrations? from abstract_adaptor.rb [Nicholas Seckar]

* Fix acts_as_list so that moving next-to-last item to the bottom does not result in duplicate item positions

* Fixed incompatibility in DB2 adapter with the new limit/offset approach #1718 [Maik Schmidt]

* Added :select option to find which can specify a different value than the default *, like find(:all, :select => "first_name, last_name"), if you either only want to select part of the columns or exclude columns otherwise included from a join #1338 [Stefan Kaes]


*1.11.1* (11 July, 2005)

* Added support for limit and offset with eager loading of has_one and belongs_to associations. Using the options with has_many and has_and_belongs_to_many associations will now raise an ActiveRecord::ConfigurationError #1692 [Rick Olsen]

* Fixed that assume_bottom_position (in acts_as_list) could be called on items already last in the list and they would move one position away from the list #1648 [tyler@kianta.com]

* Added ActiveRecord::Base.threaded_connections flag to turn off 1-connection per thread (required for thread safety). By default it's on, but WEBrick in Rails need it off #1685 [Sam Stephenson]

* Correct reflected table name for singular associations.  #1688 [court3nay@gmail.com]

* Fixed optimistic locking with SQL Server #1660 [tom@popdog.net]

* Added ActiveRecord::Migrator.migrate that can figure out whether to go up or down based on the target version and the current

* Added better error message for "packets out of order" #1630 [courtenay]

* Fixed first run of "rake migrate" on PostgreSQL by not expecting a return value on the id #1640


*1.11.0* (6 July, 2005)

* Fixed that Yaml error message in fixtures hid the real error #1623 [Nicholas Seckar]

* Changed logging of SQL statements to use the DEBUG level instead of INFO

* Added new Migrations framework for describing schema transformations in a way that can be easily applied across multiple databases #1604 [Tobias Luetke] See documentation under ActiveRecord::Migration and the additional support in the Rails rakefile/generator.

* Added callback hooks to association collections #1549 [Florian Weber]. Example:

    class Project
      has_and_belongs_to_many :developers, :before_add => :evaluate_velocity
    
      def evaluate_velocity(developer)
        ...
      end
    end 
  
  ..raising an exception will cause the object not to be added (or removed, with before_remove).
    

* Fixed Base.content_columns call for SQL Server adapter #1450 [DeLynn Berry]

* Fixed Base#write_attribute to work with both symbols and strings #1190 [Paul Legato]

* Fixed that has_and_belongs_to_many didn't respect single table inheritance types #1081 [Florian Weber]

* Speed up ActiveRecord#method_missing for the common case (read_attribute).

* Only notify observers on after_find and after_initialize if these methods are defined on the model.  #1235 [skaes@web.de]

* Fixed that single-table inheritance sub-classes couldn't be used to limit the result set with eager loading #1215 [Chris McGrath]

* Fixed validates_numericality_of to work with overrided getter-method when :allow_nil is on #1316 [raidel@onemail.at]

* Added roots, root, and siblings to the batch of methods added by acts_as_tree #1541 [michael@schuerig.de]

* Added support for limit/offset with the MS SQL Server driver so that pagination will now work #1569 [DeLynn Berry]

* Added support for ODBC connections to MS SQL Server so you can connect from a non-Windows machine #1569 [Mark Imbriaco/DeLynn Berry]

* Fixed that multiparameter posts ignored attr_protected #1532 [alec+rails@veryclever.net]

* Fixed problem with eager loading when using a has_and_belongs_to_many association using :association_foreign_key #1504 [flash@vanklinkenbergsoftware.nl]

* Fixed Base#find to honor the documentation on how :joins work and make them consistent with Base#count #1405 [pritchie@gmail.com]. What used to be:

    Developer.find :all, :joins => 'developers_projects', :conditions => 'id=developer_id AND project_id=1'
  
  ...should instead be:
  
    Developer.find(
      :all, 
      :joins => 'LEFT JOIN developers_projects ON developers.id = developers_projects.developer_id', 
      :conditions => 'project_id=1'
    )    

* Fixed that validations didn't respecting custom setting for too_short, too_long messages #1437 [Marcel Molina]

* Fixed that clear_association_cache doesn't delete new associations on new records (so you can safely place new records in the session with Action Pack without having new associations wiped) #1494 [cluon]

* Fixed that calling Model.find([]) returns [] and doesn't throw an exception #1379

* Fixed that adding a record to a has_and_belongs_to collection would always save it -- now it only saves if its a new record #1203 [Alisdair McDiarmid]

* Fixed saving of in-memory association structures to happen as a after_create/after_update callback instead of after_save -- that way you can add new associations in after_create/after_update callbacks without getting them saved twice

* Allow any Enumerable, not just Array, to work as bind variables #1344 [Jeremy Kemper]

* Added actual database-changing behavior to collection assigment for has_many and has_and_belongs_to_many #1425 [Sebastian Kanthak].
  Example:

    david.projects = [Project.find(1), Project.new("name" => "ActionWebSearch")]
    david.save
  
  If david.projects already contain the project with ID 1, this is left unchanged. Any other projects are dropped. And the new
  project is saved when david.save is called.
  
  Also included is a way to do assignments through IDs, which is perfect for checkbox updating, so you get to do:
  
    david.project_ids = [1, 5, 7]

* Corrected typo in find SQL for has_and_belongs_to_many.  #1312 [ben@bensinclair.com]

* Fixed sanitized conditions for has_many finder method.  #1281 [jackc@hylesanderson.com, pragdave, Tobias Luetke]

* Comprehensive PostgreSQL schema support.  Use the optional schema_search_path directive in database.yml to give a comma-separated list of schemas to search for your tables.  This allows you, for example, to have tables in a shared schema without having to use a custom table name.  See http://www.postgresql.org/docs/8.0/interactive/ddl-schemas.html to learn more.  #827 [dave@cherryville.org]

* Corrected @@configurations typo #1410 [david@ruppconsulting.com]

* Return PostgreSQL columns in the order they were declared #1374 [perlguy@gmail.com]

* Allow before/after update hooks to work on models using optimistic locking 

* Eager loading of dependent has_one associations won't delete the association #1212

* Added a second parameter to the build and create method for has_one that controls whether the existing association should be replaced (which means nullifying its foreign key as well). By default this is true, but false can be passed to prevent it.

* Using transactional fixtures now causes the data to be loaded only once.

* Added fixture accessor methods that can be used when instantiated fixtures are disabled.

    fixtures :web_sites

    def test_something
      assert_equal "Ruby on Rails", web_sites(:rubyonrails).name
    end

* Added DoubleRenderError exception that'll be raised if render* is called twice #518 [Nicholas Seckar]

* Fixed exceptions occuring after render has been called #1096 [Nicholas Seckar]

* CHANGED: validates_presence_of now uses Errors#add_on_blank, which will make "  " fail the validation where it didn't before #1309

* Added Errors#add_on_blank which works like Errors#add_on_empty, but uses Object#blank? instead

* Added the :if option to all validations that can either use a block or a method pointer to determine whether the validation should be run or not. #1324 [Duane Johnson/jhosteny]. Examples:

  Conditional validations such as the following are made possible:
    validates_numericality_of :income, :if => :employed?

  Conditional validations can also solve the salted login generator problem:
    validates_confirmation_of :password, :if => :new_password?
  
  Using blocks:
    validates_presence_of :username, :if => Proc.new { |user| user.signup_step > 1 }

* Fixed use of construct_finder_sql when using :join #1288 [dwlt@dwlt.net]

* Fixed that :delete_sql in has_and_belongs_to_many associations couldn't access record properties #1299 [Rick Olson]

* Fixed that clone would break when an aggregate had the same name as one of its attributes #1307 [Jeremy Kemper]

* Changed that destroying an object will only freeze the attributes hash, which keeps the object from having attributes changed (as that wouldn't make sense), but allows for the querying of associations after it has been destroyed.

* Changed the callbacks such that observers are notified before the in-object callbacks are triggered. Without this change, it wasn't possible to act on the whole object in something like a before_destroy observer without having the objects own callbacks (like deleting associations) called first.

* Added option for passing an array to the find_all version of the dynamic finders and have it evaluated as an IN fragment. Example:

    # SELECT * FROM topics WHERE title IN ('First', 'Second')
    Topic.find_all_by_title(["First", "Second"])

* Added compatibility with camelCase column names for dynamic finders #533 [Dee.Zsombor]

* Fixed extraneous comma in count() function that made it not work with joins #1156 [jarkko/Dee.Zsombor]

* Fixed incompatibility with Base#find with an array of ids that would fail when using eager loading #1186 [Alisdair McDiarmid]

* Fixed that validate_length_of lost :on option when :within was specified #1195 [jhosteny@mac.com]

* Added encoding and min_messages options for PostgreSQL #1205 [shugo]. Configuration example:

    development:
      adapter: postgresql
      database: rails_development
      host: localhost
      username: postgres
      password:
      encoding: UTF8
      min_messages: ERROR

* Fixed acts_as_list where deleting an item that was removed from the list would ruin the positioning of other list items #1197 [Jamis Buck]

* Added validates_exclusion_of as a negative of validates_inclusion_of

* Optimized counting of has_many associations by setting the association to empty if the count is 0 so repeated calls doesn't trigger database calls


*1.10.1* (20th April, 2005)

* Fixed frivilous database queries being triggered with eager loading on empty associations and other things

* Fixed order of loading in eager associations

* Fixed stray comma when using eager loading and ordering together from has_many associations #1143


*1.10.0* (19th April, 2005)

* Added eager loading of associations as a way to solve the N+1 problem more gracefully without piggy-back queries. Example:

    for post in Post.find(:all, :limit => 100)
      puts "Post:            " + post.title
      puts "Written by:      " + post.author.name
      puts "Last comment on: " + post.comments.first.created_on
    end
  
  This used to generate 301 database queries if all 100 posts had both author and comments. It can now be written as:
  
    for post in Post.find(:all, :limit => 100, :include => [ :author, :comments ])
 
  ...and the number of database queries needed is now 1.

* Added new unified Base.find API and deprecated the use of find_first and find_all. See the documentation for Base.find. Examples:

    Person.find(1, :conditions => "administrator = 1", :order => "created_on DESC")
    Person.find(1, 5, 6, :conditions => "administrator = 1", :order => "created_on DESC")
    Person.find(:first, :order => "created_on DESC", :offset => 5)
    Person.find(:all, :conditions => [ "category IN (?)", categories], :limit => 50)
    Person.find(:all, :offset => 10, :limit => 10)

* Added acts_as_nested_set #1000 [wschenk]. Introduction:

    This acts provides Nested Set functionality.  Nested Set is similiar to Tree, but with
    the added feature that you can select the children and all of it's descendants with
    a single query.  A good use case for this is a threaded post system, where you want
    to display every reply to a comment without multiple selects.

* Added Base.save! that attempts to save the record just like Base.save but will raise a RecordInvalid exception instead of returning false if the record is not valid [After much pestering from Dave Thomas]

* Fixed PostgreSQL usage of fixtures with regards to public schemas and table names with dots #962 [gnuman1@gmail.com]

* Fixed that fixtures were being deleted in the same order as inserts causing FK errors #890 [andrew.john.peters@gmail.com]

* Fixed loading of fixtures in to be in the right order (or PostgreSQL would bark) #1047 [stephenh@chase3000.com]

* Fixed page caching for non-vhost applications living underneath the root #1004 [Ben Schumacher]

* Fixes a problem with the SQL Adapter which was resulting in IDENTITY_INSERT not being set to ON when it should be #1104 [adelle]

* Added the option to specify the acceptance string in validates_acceptance_of #1106 [caleb@aei-tech.com]

* Added insert_at(position) to acts_as_list #1083 [DeLynnB]

* Removed the default order by id on has_and_belongs_to_many queries as it could kill performance on large sets (you can still specify by hand with :order)

* Fixed that Base.silence should restore the old logger level when done, not just set it to DEBUG #1084 [yon@milliped.com]

* Fixed boolean saving on Oracle #1093 [mparrish@pearware.org]

* Moved build_association and create_association for has_one and belongs_to out of deprecation as they work when the association is nil unlike association.build and association.create, which require the association to be already in place #864

* Added rollbacks of transactions if they're active as the dispatcher is killed gracefully (TERM signal) #1054 [Leon Bredt]

* Added quoting of column names for fixtures #997 [jcfischer@gmail.com]

* Fixed counter_sql when no records exist in database for PostgreSQL (would give error, not 0) #1039 [Caleb Tennis]

* Fixed that benchmarking times for rendering included db runtimes #987 [skaes@web.de]

* Fixed boolean queries for t/f fields in PostgreSQL #995 [dave@cherryville.org]

* Added that model.items.delete(child) will delete the child, not just set the foreign key to nil, if the child is dependent on the model #978 [Jeremy Kemper]

* Fixed auto-stamping of dates (created_on/updated_on) for PostgreSQL #985 [dave@cherryville.org]

* Fixed Base.silence/benchmark to only log if a logger has been configured #986 [skaes@web.de]

* Added a join parameter as the third argument to Base.find_first and as the second to Base.count #426, #988 [skaes@web.de]

* Fixed bug in Base#hash method that would treat records with the same string-based id as different [Dave Thomas]

* Renamed DateHelper#distance_of_time_in_words_to_now to DateHelper#time_ago_in_words (old method name is still available as a deprecated alias)


*1.9.1* (27th March, 2005)

* Fixed that Active Record objects with float attribute could not be cloned #808

* Fixed that MissingSourceFile's wasn't properly detected in production mode #925 [Nicholas Seckar]

* Fixed that :counter_cache option would look for a line_items_count column for a LineItem object instead of lineitems_count

* Fixed that AR exists?() would explode on postgresql if the passed id did not match the PK type #900 [Scott Barron]

* Fixed the MS SQL adapter to work with the new limit/offset approach and with binary data (still suffering from 7KB limit, though) #901 [delynnb]


*1.9.0* (22th March, 2005)

* Added adapter independent limit clause as a two-element array with the first being the limit, the second being the offset #795 [Sam Stephenson]. Example:

    Developer.find_all nil, 'id ASC', 5      # return the first five developers 
    Developer.find_all nil, 'id ASC', [3, 8] # return three developers, starting from #8 and forward
    
  This doesn't yet work with the DB2 or MS SQL adapters. Patches to make that happen are encouraged. 

* Added alias_method :to_param, :id to Base, such that Active Record objects to be used as URL parameters in Action Pack automatically #812 [Nicholas Seckar/Sam Stephenson]

* Improved the performance of the OCI8 adapter for Oracle #723 [pilx/gjenkins]

* Added type conversion before saving a record, so string-based values like "10.0" aren't left for the database to convert #820 [dave@cherryville.org]

* Added with additional settings for working with transactional fixtures and pre-loaded test databases #865 [mindel]

* Fixed acts_as_list to trigger remove_from_list on destroy after the fact, not before, so a unique position can be maintained #871 [Alisdair McDiarmid]

* Added the possibility of specifying fixtures in multiple calls #816 [kim@tinker.com]

* Added Base.exists?(id) that'll return true if an object of the class with the given id exists #854 [stian@grytoyr.net]

* Added optionally allow for nil or empty strings with validates_numericality_of #801 [Sebastian Kanthak]

* Fixed problem with using slashes in validates_format_of regular expressions #801 [Sebastian Kanthak]

* Fixed that SQLite3 exceptions are caught and reported properly #823 [yerejm]

* Added that all types of after_find/after_initialized callbacks are triggered if the explicit implementation is present, not only the explicit implementation itself

* Fixed that symbols can be used on attribute assignment, like page.emails.create(:subject => data.subject, :body => data.body)


*1.8.0* (7th March, 2005)

* Added ActiveRecord::Base.colorize_logging to control whether to use colors in logs or not (on by default)

* Added support for timestamp with time zone in PostgreSQL #560 [Scott Barron]

* Added MultiparameterAssignmentErrors and AttributeAssignmentError exceptions #777 [demetrius]. Documentation:

   * +MultiparameterAssignmentErrors+ -- collection of errors that occurred during a mass assignment using the 
     +attributes=+ method. The +errors+ property of this exception contains an array of +AttributeAssignmentError+ 
     objects that should be inspected to determine which attributes triggered the errors.
   * +AttributeAssignmentError+ -- an error occurred while doing a mass assignment through the +attributes=+ method.
     You can inspect the +attribute+ property of the exception object to determine which attribute triggered the error.

* Fixed that postgresql adapter would fails when reading bytea fields with null value #771 [rodrigo k]

* Added transactional fixtures that uses rollback to undo changes to fixtures instead of DELETE/INSERT -- it's much faster. See documentation under Fixtures #760 [Jeremy Kemper]

* Added destruction of dependent objects in has_one associations when a new assignment happens #742 [mindel]. Example:

    class Account < ActiveRecord::Base
      has_one :credit_card, :dependent => true
    end
    class CreditCard < ActiveRecord::Base
      belongs_to :account
    end

    account.credit_card # => returns existing credit card, lets say id = 12
    account.credit_card = CreditCard.create("number" => "123")
    account.save # => CC with id = 12 is destroyed


* Added validates_numericality_of #716 [skanthak/c.r.mcgrath]. Docuemntation:

    Validates whether the value of the specified attribute is numeric by trying to convert it to
    a float with Kernel.Float (if <tt>integer</tt> is false) or applying it to the regular expression
    <tt>/^[\+\-]?\d+$/</tt> (if <tt>integer</tt> is set to true).
    
      class Person < ActiveRecord::Base
        validates_numericality_of :value, :on => :create
      end
    
    Configuration options:
    * <tt>message</tt> - A custom error message (default is: "is not a number")
    * <tt>on</tt> Specifies when this validation is active (default is :save, other options :create, :update)
    * <tt>only_integer</tt> Specifies whether the value has to be an integer, e.g. an integral value (default is false)
    

* Fixed that HasManyAssociation#count was using :finder_sql rather than :counter_sql if it was available #445 [Scott Barron]

* Added better defaults for composed_of, so statements like composed_of :time_zone, :mapping => %w( time_zone time_zone ) can be written without the mapping part (it's now assumed)

* Added MacroReflection#macro which will return a symbol describing the macro used (like :composed_of or :has_many) #718, #248 [james@slashetc.com]


*1.7.0* (24th February, 2005)

* Changed the auto-timestamping feature to use ActiveRecord::Base.default_timezone instead of entertaining the parallel ActiveRecord::Base.timestamps_gmt method. The latter is now deprecated and will throw a warning on use (but still work) #710 [Jamis Buck]

* Added a OCI8-based Oracle adapter that has been verified to work with Oracle 8 and 9 #629 [Graham Jenkins]. Usage notes:

    1.  Key generation uses a sequence "rails_sequence" for all tables. (I couldn't find a simple
        and safe way of passing table-specific sequence information to the adapter.)
    2.  Oracle uses DATE or TIMESTAMP datatypes for both dates and times. Consequently I have had to
        resort to some hacks to get data converted to Date or Time in Ruby.
        If the column_name ends in _at (like created_at, updated_at) it's created as a Ruby Time. Else if the
        hours/minutes/seconds are 0, I make it a Ruby Date. Else it's a Ruby Time.
        This is nasty - but if you use Duck Typing you'll probably not care very much.
        In 9i it's tempting to map DATE to Date and TIMESTAMP to Time but I don't think that is
        valid - too many databases use DATE for both.
        Timezones and sub-second precision on timestamps are not supported.
    3.  Default values that are functions (such as "SYSDATE") are not supported. This is a
        restriction of the way active record supports default values.
    4.  Referential integrity constraints are not fully supported. Under at least
        some circumstances, active record appears to delete parent and child records out of
        sequence and out of transaction scope. (Or this may just be a problem of test setup.)

  The OCI8 driver can be retrieved from http://rubyforge.org/projects/ruby-oci8/

* Added option :schema_order to the PostgreSQL adapter to support the use of multiple schemas per database #697 [YuriSchimke]

* Optimized the SQL used to generate has_and_belongs_to_many queries by listing the join table first #693 [yerejm]

* Fixed that when using validation macros with a custom message, if you happened to use single quotes in the message string you would get a parsing error #657 [tonka]

* Fixed that Active Record would throw Broken Pipe errors with FCGI when the MySQL connection timed out instead of reconnecting #428 [Nicholas Seckar]

* Added options to specify an SSL connection for MySQL. Define the following attributes in the connection config (config/database.yml in Rails) to use it: sslkey, sslcert, sslca, sslcapath, sslcipher. To use SSL with no client certs, just set :sslca = '/dev/null'. http://dev.mysql.com/doc/mysql/en/secure-connections.html #604 [daniel@nightrunner.com]

* Added automatic dropping/creating of test tables for running the unit tests on all databases #587 [adelle@bullet.net.au]

* Fixed that find_by_* would fail when column names had numbers #670 [demetrius]

* Fixed the SQL Server adapter on a bunch of issues #667 [DeLynn]

    1. Created a new columns method that is much cleaner. 
    2. Corrected a problem with the select and select_all methods 
       that didn't account for the LIMIT clause being passed into raw SQL statements. 
    3. Implemented the string_to_time method in order to create proper instances of the time class. 
    4. Added logic to the simplified_type method that allows the database to specify the scale of float data. 
    5. Adjusted the quote_column_name to account for the fact that MS SQL is bothered by a forward slash in the data string.

* Fixed that the dynamic finder like find_all_by_something_boolean(false) didn't work #649 [lmarlow@yahoo.com]

* Added validates_each that validates each specified attribute against a block #610 [Jeremy Kemper]. Example:
    
    class Person < ActiveRecord::Base
      validates_each :first_name, :last_name do |record, attr|
        record.errors.add attr, 'starts with z.' if attr[0] == ?z
      end
    end

* Added :allow_nil as an explicit option for validates_length_of, so unless that's set to true having the attribute as nil will also return an error if a range is specified as :within #610 [Jeremy Kemper]

* Added that validates_* now accept blocks to perform validations #618 [Tim Bates]. Example:

    class Person < ActiveRecord::Base
      validate { |person| person.errors.add("title", "will never be valid") if SHOULD_NEVER_BE_VALID }
    end

* Addded validation for validate all the associated objects before declaring failure with validates_associated #618 [Tim Bates]

* Added keyword-style approach to defining the custom relational bindings #545 [Jamis Buck]. Example:

    class Project < ActiveRecord::Base
      primary_key "sysid"
      table_name "XYZ_PROJECT"
      inheritance_column { original_inheritance_column + "_id" }
    end

* Fixed Base#clone for use with PostgreSQL #565 [hanson@surgery.wisc.edu]


*1.6.0* (January 25th, 2005)

* Added that has_many association build and create methods can take arrays of record data like Base#create and Base#build to build/create multiple records at once.

* Added that Base#delete and Base#destroy both can take an array of ids to delete/destroy #336

* Added the option of supplying an array of attributes to Base#create, so that multiple records can be created at once.

* Added the option of supplying an array of ids and attributes to Base#update, so that multiple records can be updated at once (inspired by #526/Duane Johnson). Example

    people = { 1 => { "first_name" => "David" }, 2 => { "first_name" => "Jeremy"} }
    Person.update(people.keys, people.values)

* Added ActiveRecord::Base.timestamps_gmt that can be set to true to make the automated timestamping use GMT instead of local time #520 [Scott Baron]

* Added that update_all calls sanitize_sql on its updates argument, so stuff like MyRecord.update_all(['time = ?', Time.now]) works #519 [notahat]

* Fixed that the dynamic finders didn't treat nil as a "IS NULL" but rather "= NULL" case #515 [Demetrius]

* Added bind-named arrays for interpolating a group of ids or strings in conditions #528 [Jeremy Kemper]

* Added that has_and_belongs_to_many associations with additional attributes also can be created between unsaved objects and only committed to the database when Base#save is called on the associator #524 [Eric Anderson]

* Fixed that records fetched with piggy-back attributes or through rich has_and_belongs_to_many associations couldn't be saved due to the extra attributes not part of the table #522 [Eric Anderson]

* Added mass-assignment protection for the inheritance column -- regardless of a custom column is used or not

* Fixed that association proxies would fail === tests like PremiumSubscription === @account.subscription

* Fixed that column aliases didn't work as expected with the new MySql411 driver #507 [Demetrius]

* Fixed that find_all would produce invalid sql when called sequentialy #490 [Scott Baron]


*1.5.1* (January 18th, 2005)

* Fixed that the belongs_to and has_one proxy would fail a test like 'if project.manager' -- this unfortunately also means that you can't call methods like project.manager.build unless there already is a manager on the project #492 [Tim Bates]

* Fixed that the Ruby/MySQL adapter wouldn't connect if the password was empty #503 [Pelle]


*1.5.0* (January 17th, 2005)

* Fixed that unit tests for MySQL are now run as the "rails" user instead of root #455 [Eric Hodel]

* Added validates_associated that enables validation of objects in an unsaved association #398 [Tim Bates]. Example:

    class Book < ActiveRecord::Base
      has_many :pages
      belongs_to :library
    
      validates_associated :pages, :library
    end
    
* Added support for associating unsaved objects #402 [Tim Bates]. Rules that govern this addition:

    == Unsaved objects and associations
    
    You can manipulate objects and associations before they are saved to the database, but there is some special behaviour you should be
    aware of, mostly involving the saving of associated objects.
    
    === One-to-one associations
    
    * Assigning an object to a has_one association automatically saves that object, and the object being replaced (if there is one), in
      order to update their primary keys - except if the parent object is unsaved (new_record? == true).
    * If either of these saves fail (due to one of the objects being invalid) the assignment statement returns false and the assignment
      is cancelled.
    * If you wish to assign an object to a has_one association without saving it, use the #association.build method (documented below).
    * Assigning an object to a belongs_to association does not save the object, since the foreign key field belongs on the parent. It does
      not save the parent either.
    
    === Collections
    
    * Adding an object to a collection (has_many or has_and_belongs_to_many) automatically saves that object, except if the parent object
      (the owner of the collection) is not yet stored in the database.
    * If saving any of the objects being added to a collection (via #push or similar) fails, then #push returns false.
    * You can add an object to a collection without automatically saving it by using the #collection.build method (documented below).
    * All unsaved (new_record? == true) members of the collection are automatically saved when the parent is saved.

* Added replace to associations, so you can do project.manager.replace(new_manager) or project.milestones.replace(new_milestones) #402 [Tim Bates]

* Added build and create methods to has_one and belongs_to associations, so you can now do project.manager.build(attributes) #402 [Tim Bates]

* Added that if a before_* callback returns false, all the later callbacks and the associated action are cancelled. If an after_* callback returns false, all the later callbacks are cancelled. Callbacks are generally run in the order they are defined, with the exception of callbacks defined as methods on the model, which are called last. #402 [Tim Bates]

* Fixed that Base#== wouldn't work for multiple references to the same unsaved object #402 [Tim Bates]

* Fixed binary support for PostgreSQL #444 [alex@byzantine.no]

* Added a differenciation between AssociationCollection#size and -length. Now AssociationCollection#size returns the size of the 
  collection by executing a SELECT COUNT(*) query if the collection hasn't been loaded and calling collection.size if it has. If 
  it's more likely than not that the collection does have a size larger than zero and you need to fetch that collection afterwards, 
  it'll take one less SELECT query if you use length.

* Added Base#attributes that returns a hash of all the attributes with their names as keys and clones of their objects as values #433 [atyp.de]

* Fixed that foreign keys named the same as the association would cause stack overflow #437 [Eric Anderson]

* Fixed default scope of acts_as_list from "1" to "1 = 1", so it'll work in PostgreSQL (among other places) #427 [Alexey]

* Added Base#reload that reloads the attributes of an object from the database #422 [Andreas Schwarz]

* Added SQLite3 compatibility through the sqlite3-ruby adapter by Jamis Buck #381 [Jeremy Kemper]

* Added support for the new protocol spoken by MySQL 4.1.1+ servers for the Ruby/MySQL adapter that ships with Rails #440 [Matt Mower] 

* Added that Observers can use the observes class method instead of overwriting self.observed_class().

    Before:
      class ListSweeper < ActiveRecord::Base
        def self.observed_class() [ List, Item ]
      end
    
    After:
      class ListSweeper < ActiveRecord::Base
        observes List, Item
      end

* Fixed that conditions in has_many and has_and_belongs_to_many should be interpolated just like the finder_sql is

* Fixed Base#update_attribute to be indifferent to whether a string or symbol is used to describe the name

* Added Base#toggle(attribute) and Base#toggle!(attribute) that makes it easier to flip a switch or flag.

    Before: topic.update_attribute(:approved, !approved?)
    After : topic.toggle!(:approved)

* Added Base#increment!(attribute) and Base#decrement!(attribute) that also saves the records. Example:

    page.views # => 1
    page.increment!(:views) # executes an UPDATE statement
    page.views # => 2
    
    page.increment(:views).increment!(:views)
    page.views # => 4

* Added Base#increment(attribute) and Base#decrement(attribute) that encapsulates the += 1 and -= 1 patterns.


*1.4.0* (January 4th, 2005)

* Added automated optimistic locking if the field <tt>lock_version</tt> is present.  Each update to the
  record increments the lock_version column and the locking facilities ensure that records instantiated twice
  will let the last one saved raise a StaleObjectError if the first was also updated. Example:
  
    p1 = Person.find(1)
    p2 = Person.find(1)
    
    p1.first_name = "Michael"
    p1.save
    
    p2.first_name = "should fail"
    p2.save # Raises a ActiveRecord::StaleObjectError
  
  You're then responsible for dealing with the conflict by rescuing the exception and either rolling back, merging,
  or otherwise apply the business logic needed to resolve the conflict.

  #384 [Michael Koziarski]

* Added dynamic attribute-based finders as a cleaner way of getting objects by simple queries without turning to SQL. 
  They work by appending the name of an attribute to <tt>find_by_</tt>, so you get finders like <tt>Person.find_by_user_name,
  Payment.find_by_transaction_id</tt>. So instead of writing <tt>Person.find_first(["user_name = ?", user_name])</tt>, you just do
  <tt>Person.find_by_user_name(user_name)</tt>.
  
  It's also possible to use multiple attributes in the same find by separating them with "_and_", so you get finders like
  <tt>Person.find_by_user_name_and_password</tt> or even <tt>Payment.find_by_purchaser_and_state_and_country</tt>. So instead of writing
  <tt>Person.find_first(["user_name = ? AND password = ?", user_name, password])</tt>, you just do 
  <tt>Person.find_by_user_name_and_password(user_name, password)</tt>.

  While primarily a construct for easier find_firsts, it can also be used as a construct for find_all by using calls like 
  <tt>Payment.find_all_by_amount(50)</tt> that is turned into <tt>Payment.find_all(["amount = ?", 50])</tt>. This is something not as equally useful,
  though, as it's not possible to specify the order in which the objects are returned.

* Added block-style for callbacks #332 [Jeremy Kemper].

    Before:
      before_destroy(Proc.new{ |record| Person.destroy_all "firm_id = #{record.id}" })
    
    After:
      before_destroy { |record| Person.destroy_all "firm_id = #{record.id}" }

* Added :counter_cache option to acts_as_tree that works just like the one you can define on belongs_to #371 [Josh]

* Added Base.default_timezone accessor that determines whether to use Time.local (using :local) or Time.utc (using :utc) when pulling dates 
  and times from the database. This is set to :local by default.

* Added the possibility for adapters to overwrite add_limit! to implement a different limiting scheme than "LIMIT X" used by MySQL, PostgreSQL, and SQLite.

* Added the possibility of having objects with acts_as_list created before their scope is available or...

* Added a db2 adapter that only depends on the Ruby/DB2 bindings (http://raa.ruby-lang.org/project/ruby-db2/) #386 [Maik Schmidt]

* Added the final touches to the Microsoft SQL Server adapter by Joey Gibson that makes it suitable for actual use #394 [DeLynn Barry]

* Added that Base#find takes an optional options hash, including :conditions. Base#find_on_conditions deprecated in favor of #find with :conditions #407 [Jeremy Kemper]

* Added HasManyAssociation#count that works like Base#count #413 [intinig]

* Fixed handling of binary content in blobs and similar fields for Ruby/MySQL and SQLite #409 [xal]

* Fixed a bug in the Ruby/MySQL that caused binary content to be escaped badly and come back mangled #405 [Tobias Luetke]

* Fixed that the const_missing autoload assumes the requested constant is set by require_association and calls const_get to retrieve it. 
  If require_association did not set the constant then const_get will call const_missing, resulting in an infinite loop #380 [Jeremy Kemper]

* Fixed broken transactions that were actually only running object-level and not db level transactions [andreas]

* Fixed that validates_uniqueness_of used 'id' instead of defined primary key #406

* Fixed that the overwritten respond_to? method didn't take two parameters like the original #391

* Fixed quoting in validates_format_of that would allow some rules to pass regardless of input #390 [Dmitry V. Sabanin]


*1.3.0* (December 23, 2004)

* Added a require_association hook on const_missing that makes it possible to use any model class without requiring it first. This makes STI look like:

    before:
      require_association 'person'
      class Employee < Person
      end
    
    after:
      class Employee < Person
      end

  This also reduces the usefulness of Controller.model in Action Pack to currently only being for documentation purposes.      

* Added that Base.update_all and Base.delete_all return an integer of the number of affected rows #341

* Added scope option to validation_uniqueness #349 [Kent Sibilev]

* Added respondence to *_before_type_cast for all attributes to return their string-state before they were type casted by the column type.
  This is helpful for getting "100,000" back on a integer-based validation where the value would normally be "100".

* Added allow_nil options to validates_inclusion_of so that validation is only triggered if the attribute is not nil [what-a-day]

* Added work-around for PostgreSQL and the problem of getting fixtures to be created from id 1 on each test case.
  This only works for auto-incrementing primary keys called "id" for now #359 [Scott Baron]

* Added Base#clear_association_cache to empty all the cached associations #347 [Tobias Luetke]

* Added more informative exceptions in establish_connection #356 [Jeremy Kemper]

* Added Base#update_attributes that'll accept a hash of attributes and save the record (returning true if it passed validation, false otherwise). 

    Before:
      person.attributes = @params["person"]
      person.save
    
    Now:
      person.update_attributes(@params["person"])

* Added Base.destroy and Base.delete to remove records without holding a reference to them first.

* Added that query benchmarking will only happen if its going to be logged anyway #344

* Added higher_item and lower_item as public methods for acts_as_list #342 [Tobias Luetke]

* Fixed that options[:counter_sql] was overwritten with interpolated sql rather than original sql #355 [Jeremy Kemper]

* Fixed that overriding an attribute's accessor would be disregarded by add_on_empty and add_on_boundary_breaking because they simply used 
  the attributes[] hash instead of checking for @base.respond_to?(attr.to_s). [Marten]

* Fixed that Base.table_name would expect a parameter when used in has_and_belongs_to_many joins [Anna Lissa Cruz]

* Fixed that nested transactions now work by letting the outer most transaction have the responsibilty of starting and rolling back the transaction.
  If any of the inner transactions swallow the exception raised, though, the transaction will not be rolled back. So always let the transaction
  bubble up even when you've dealt with local issues. Closes #231 and #340.

* Fixed validates_{confirmation,acceptance}_of to only happen when the virtual attributes are not nil #348 [dpiddy@gmail.com]

* Changed the interface on AbstractAdapter to require that adapters return the number of affected rows on delete and update operations.

* Fixed the automated timestamping feature when running under Rails' development environment that resets the inheritable attributes on each request.



*1.2.0*

* Added Base.validates_inclusion_of that validates whether the value of the specified attribute is available in a particular enumerable
  object. [what-a-day]

    class Person < ActiveRecord::Base
      validates_inclusion_of :gender, :in=>%w( m f ), :message=>"woah! what are you then!??!!"
      validates_inclusion_of :age, :in=>0..99
    end

* Added acts_as_list that can decorates an existing class with methods like move_higher/lower, move_to_top/bottom. [Tobias Luetke] Example:

    class TodoItem < ActiveRecord::Base
      acts_as_list :scope => :todo_list_id
      belongs_to :todo_list
    end

* Added acts_as_tree that can decorates an existing class with a many to many relationship with itself. Perfect for categories in 
  categories and the likes. [Tobias Luetke]

* Added that Active Records will automatically record creation and/or update timestamps of database objects if fields of the names 
  created_at/created_on or updated_at/updated_on are present. [Tobias Luetke]

* Added Base.default_error_messages as a hash of all the error messages used in the validates_*_of so they can be changed in one place [Tobias Luetke]

* Added automatic transaction block around AssociationCollection.<<, AssociationCollection.delete, and AssociationCollection.destroy_all

* Fixed that Base#find will return an array if given an array -- regardless of the number of elements #270 [Marten]

* Fixed that has_and_belongs_to_many would generate bad sql when naming conventions differed from using vanilla "id" everywhere [RedTerror]

* Added a better exception for when a type column is used in a table without the intention of triggering single-table inheritance. Example:

    ActiveRecord::SubclassNotFound: The single-table inheritance mechanism failed to locate the subclass: 'bad_class!'.
    This error is raised because the column 'type' is reserved for storing the class in case of inheritance. 
    Please rename this column if you didn't intend it to be used for storing the inheritance class or 
    overwrite Company.inheritance_column to use another column for that information.

* Added that single-table inheritance will only kick in if the inheritance_column (by default "type") is present. Otherwise, inheritance won't
  have any magic side effects.

* Added the possibility of marking fields as being in error without adding a message (using nil) to it that'll get displayed wth full_messages #208 [mjobin] 

* Fixed Base.errors to be indifferent as to whether strings or symbols are used. Examples:

    Before:
      errors.add(:name, "must be shorter") if name.size > 10
      errors.on(:name)  # => "must be shorter"
      errors.on("name") # => nil

    After:
      errors.add(:name, "must be shorter") if name.size > 10
      errors.on(:name)  # => "must be shorter"
      errors.on("name") # => "must be shorter"

* Added Base.validates_format_of that Validates whether the value of the specified attribute is of the correct form by matching 
  it against the regular expression provided. [Marcel]

    class Person < ActiveRecord::Base
      validates_format_of :email, :with => /^([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})$/, :on => :create
    end

* Added Base.validates_length_of that delegates to add_on_boundary_breaking #312 [Tobias Luetke]. Example:

    Validates that the specified attribute matches the length restrictions supplied in either:
    
      - configuration[:minimum]
      - configuration[:maximum]
      - configuration[:is]
      - configuration[:within] (aka. configuration[:in])
    
    Only one option can be used at a time.
    
      class Person < ActiveRecord::Base
        validates_length_of :first_name, :maximum=>30
        validates_length_of :last_name, :maximum=>30, :message=>"less than %d if you don't mind"
        validates_length_of :user_name, :within => 6..20, :too_long => "pick a shorter name", :too_short => "pick a longer name"
        validates_length_of :fav_bra_size, :minimum=>1, :too_short=>"please enter at least %d character"
        validates_length_of :smurf_leader, :is=>4, :message=>"papa is spelled with %d characters... don't play me."
      end
    
* Added Base.validate_presence as an alternative to implementing validate and doing errors.add_on_empty yourself.

* Added Base.validates_uniqueness_of that alidates whether the value of the specified attributes are unique across the system. 
  Useful for making sure that only one user can be named "davidhh".
  
    class Person < ActiveRecord::Base
      validates_uniqueness_of :user_name
    end
  
  When the record is created, a check is performed to make sure that no record exist in the database with the given value for the specified
  attribute (that maps to a column). When the record is updated, the same check is made but disregarding the record itself.


* Added Base.validates_confirmation_of that encapsulates the pattern of wanting to validate a password or email address field with a confirmation. Example:
 
     Model:
       class Person < ActiveRecord::Base
         validates_confirmation_of :password
       end
  
     View:
       <%= password_field "person", "password" %>
       <%= password_field "person", "password_confirmation" %>
  
   The person has to already have a password attribute (a column in the people table), but the password_confirmation is virtual.
   It exists only as an in-memory variable for validating the password. This check is performed both on create and update.


* Added Base.validates_acceptance_of that encapsulates the pattern of wanting to validate the acceptance of a terms of service check box (or similar agreement). Example:
  
   class Person < ActiveRecord::Base
     validates_acceptance_of :terms_of_service
   end
  
  The terms_of_service attribute is entirely virtual. No database column is needed. This check is performed both on create and update.

  NOTE: The agreement is considered valid if it's set to the string "1". This makes it easy to relate it to an HTML checkbox.

  
* Added validation macros to make the stackable just like the lifecycle callbacks. Examples:

    class Person < ActiveRecord::Base
      validate { |record| record.errors.add("name", "too short") unless name.size > 10 }
      validate { |record| record.errors.add("name", "too long")  unless name.size < 20 }
      validate_on_create :validate_password
      
      private
        def validate_password
          errors.add("password", "too short") unless password.size > 6
        end
    end

* Added the option for sanitizing find_by_sql and the offset parts in regular finds [Sam Stephenson]. Examples:

    Project.find_all ["category = ?", category_name], "created ASC", ["? OFFSET ?", 15, 20]
    Post.find_by_sql ["SELECT * FROM posts WHERE author = ? AND created > ?", author_id, start_date]

* Fixed value quoting in all generated SQL statements, so that integers are not surrounded in quotes and that all sanitation are happening
  through the database's own quoting routine. This should hopefully make it lots easier for new adapters that doesn't accept '1' for integer
  columns.

* Fixed has_and_belongs_to_many guessing of foreign key so that keys are generated correctly for models like SomeVerySpecialClient 
  [Florian Weber]

* Added counter_sql option for has_many associations [Jeremy Kemper]. Documentation:

    <tt>:counter_sql</tt> - specify a complete SQL statement to fetch the size of the association. If +:finder_sql+ is
    specified but +:counter_sql+, +:counter_sql+ will be generated by replacing SELECT ... FROM with SELECT COUNT(*) FROM.

* Fixed that methods wrapped in callbacks still return their original result #260 [Jeremy Kemper]

* Fixed the Inflector to handle the movie/movies pair correctly #261 [Scott Baron]

* Added named bind-style variable interpolation #281 [Michael Koziarski]. Example:

    Person.find(["id = :id and first_name = :first_name", { :id => 5, :first_name = "bob' or 1=1" }])

* Added bind-style variable interpolation for the condition arrays that uses the adapter's quote method [Michael Koziarski]

  Before:
    find_first([ "user_name = '%s' AND password = '%s'", user_name, password ])]
    find_first([ "firm_id = %s", firm_id ])] # unsafe!

  After:
    find_first([ "user_name = ? AND password = ?", user_name, password ])]
    find_first([ "firm_id = ?", firm_id ])]

* Added CSV format for fixtures #272 [what-a-day]. (See the new and expanded documentation on fixtures for more information)

* Fixed fixtures using primary key fields called something else than "id" [dave]

* Added proper handling of time fields that are turned into Time objects with the dummy date of 2000/1/1 [HariSeldon]

* Added reverse order of deleting fixtures, so referential keys can be maintained #247 [Tim Bates]

* Added relative path search for sqlite dbfiles in database.yml (if RAILS_ROOT is defined) #233 [Jeremy Kemper]

* Added option to establish_connection where you'll be able to leave out the parameter to have it use the RAILS_ENV environment variable

* Fixed problems with primary keys and postgresql sequences (#230) [Tim Bates]

* Added reloading for associations under cached environments like FastCGI and mod_ruby. This makes it possible to use those environments for development.
  This is turned on by default, but can be turned off with ActiveRecord::Base.reload_dependencies = false in production environments.

  NOTE: This will only have an effect if you let the associations manage the requiring of model classes. All libraries loaded through
  require will be "forever" cached. You can, however, use ActiveRecord::Base.load_or_require("library") to get this behavior outside of the
  auto-loading associations.

* Added ERB capabilities to the fixture files for dynamic fixture generation. You don't need to do anything, just include ERB blocks like:

    david:
      id: 1
      name: David

    jamis:
      id: 2
      name: Jamis

    <% for digit in 3..10 %>
    dev_<%= digit %>:
      id: <%= digit %>
      name: fixture_<%= digit %>
    <% end %>

* Changed the yaml fixture searcher to look in the root of the fixtures directory, so when you before could have something like:

    fixtures/developers/fixtures.yaml
    fixtures/accounts/fixtures.yaml
  
  ...you now need to do:
  
    fixtures/developers.yaml
    fixtures/accounts.yaml

* Changed the fixture format from:

    name: david
    data:
     id: 1
     name: David Heinemeier Hansson
     birthday: 1979-10-15
     profession: Systems development
    ---
    name: steve
    data:
     id: 2
     name: Steve Ross Kellock
     birthday: 1974-09-27
     profession: guy with keyboard

  ...to:

    david:
     id: 1
     name: David Heinemeier Hansson
     birthday: 1979-10-15
     profession: Systems development
    
    steve:
     id: 2
     name: Steve Ross Kellock
     birthday: 1974-09-27
     profession: guy with keyboard
    
  The change is NOT backwards compatible. Fixtures written in the old YAML style needs to be rewritten!

* All associations will now attempt to require the classes that they associate to. Relieving the need for most explicit 'require' statements.


*1.1.0* (34)

* Added automatic fixture setup and instance variable availability. Fixtures can also be automatically 
  instantiated in instance variables relating to their names using the following style:

    class FixturesTest < Test::Unit::TestCase
      fixtures :developers # you can add more with comma separation

      def test_developers
        assert_equal 3, @developers.size # the container for all the fixtures is automatically set
        assert_kind_of Developer, @david # works like @developers["david"].find
        assert_equal "David Heinemeier Hansson", @david.name
      end
    end

* Added HasAndBelongsToManyAssociation#push_with_attributes(object, join_attributes) that can create associations in the join table with additional
  attributes. This is really useful when you have information that's only relevant to the join itself, such as a "added_on" column for an association
  between post and category. The added attributes will automatically be injected into objects retrieved through the association similar to the piggy-back
  approach:
  
    post.categories.push_with_attributes(category, :added_on => Date.today)
    post.categories.first.added_on # => Date.today
    
  NOTE: The categories table doesn't have a added_on column, it's the categories_post join table that does!

* Fixed that :exclusively_dependent and :dependent can't be activated at the same time on has_many associations [Jeremy Kemper]

* Fixed that database passwords couldn't be all numeric [Jeremy Kemper]

* Fixed that calling id would create the instance variable for new_records preventing them from being saved correctly [Jeremy Kemper]

* Added sanitization feature to HasManyAssociation#find_all so it works just like Base.find_all [Sam Stephenson/bitsweat]

* Added that you can pass overlapping ids to find without getting duplicated records back [Jeremy Kemper]

* Added that Base.benchmark returns the result of the block [Jeremy Kemper]

* Fixed problem with unit tests on Windows with SQLite [paterno]

* Fixed that quotes would break regular non-yaml fixtures [Dmitry Sabanin/daft]

* Fixed fixtures on windows with line endings cause problems under unix / mac [Tobias Luetke]

* Added HasAndBelongsToManyAssociation#find(id) that'll search inside the collection and find the object or record with that id

* Added :conditions option to has_and_belongs_to_many that works just like the one on all the other associations

* Added AssociationCollection#clear to remove all associations from has_many and has_and_belongs_to_many associations without destroying the records [geech]

* Added type-checking and remove in 1-instead-of-N sql statements to AssociationCollection#delete [geech]

* Added a return of self to AssociationCollection#<< so appending can be chained, like project << Milestone.create << Milestone.create [geech]

* Added Base#hash and Base#eql? which means that all of the equality using features of array and other containers now works:

    [ Person.find(1), Person.find(2), Person.find(3) ] & [ Person.find(1), Person.find(4) ] # => [ Person.find(1) ]

* Added :uniq as an option to has_and_belongs_to_many which will automatically ensure that AssociateCollection#uniq is called
  before pulling records out of the association. This is especially useful for three-way (and above) has_and_belongs_to_many associations.

* Added AssociateCollection#uniq which is especially useful for has_and_belongs_to_many associations that can include duplicates,
  which is common on associations that also use metadata. Usage: post.categories.uniq

* Fixed respond_to? to use a subclass specific hash instead of an Active Record-wide one

* Fixed has_and_belongs_to_many to treat associations between classes in modules properly [Florian Weber]

* Added a NoMethod exception to be raised when query and writer methods are called for attributes that doesn't exist [geech]

* Added a more robust version of Fixtures that throws meaningful errors when on formatting issues [geech]

* Added Base#transaction as a compliment to Base.transaction for prettier use in instance methods [geech]

* Improved the speed of respond_to? by placing the dynamic methods lookup table in a hash [geech]

* Added that any additional fields added to the join table in a has_and_belongs_to_many association 
  will be placed as attributes when pulling records out through has_and_belongs_to_many associations. 
  This is helpful when have information about the association itself that you want available on retrival.

* Added better loading exception catching and RubyGems retries to the database adapters [alexeyv]

* Fixed bug with per-model transactions [daniel]

* Fixed Base#transaction so that it returns the result of the last expression in the transaction block [alexeyv]

* Added Fixture#find to find the record corresponding to the fixture id. The record 
  class name is guessed by using Inflector#classify (also new) on the fixture directory name.
  
    Before: Document.find(@documents["first"]["id"])
    After : @documents["first"].find

* Fixed that the table name part of column names ("TABLE.COLUMN") wasn't removed properly [Andreas Schwarz]

* Fixed a bug with Base#size when a finder_sql was used that didn't capitalize SELECT and FROM [geech]

* Fixed quoting problems on SQLite by adding quote_string to the AbstractAdapter that can be overwritten by the concrete
  adapters for a call to the dbm. [Andreas Schwarz]
  
* Removed RubyGems backup strategy for requiring SQLite-adapter -- if people want to use gems, they're already doing it with AR.


*1.0.0 (35)*

* Added OO-style associations methods [Florian Weber]. Examples:

    Project#milestones_count       => Project#milestones.size
    Project#build_to_milestones    => Project#milestones.build
    Project#create_for_milestones  => Project#milestones.create
    Project#find_in_milestones     => Project#milestones.find
    Project#find_all_in_milestones => Project#milestones.find_all

* Added serialize as a new class method to control when text attributes should be YAMLized or not. This means that automated
  serialization of hashes, arrays, and so on WILL NO LONGER HAPPEN (#10). You need to do something like this:
  
    class User < ActiveRecord::Base
      serialize :settings
    end
  
  This will assume that settings is a text column and will now YAMLize any object put in that attribute. You can also specify
  an optional :class_name option that'll raise an exception if a serialized object is retrieved as a descendent of a class not in
  the hierarchy. Example:
  
    class User < ActiveRecord::Base
      serialize :settings, :class_name => "Hash"
    end
  
    user = User.create("settings" => %w( one two three ))
    User.find(user.id).settings # => raises SerializationTypeMismatch

* Added the option to connect to a different database for one model at a time. Just call establish_connection on the class
  you want to have connected to another database than Base. This will automatically also connect decendents of that class
  to the different database [Renald Buter].

* Added transactional protection for Base#save. Validations can now check for values knowing that it happens in a transaction and callbacks
  can raise exceptions knowing that the save will be rolled back. [Suggested by Alexey Verkhovsky]

* Added column name quoting so reserved words, such as "references", can be used as column names [Ryan Platte]

* Added the possibility to chain the return of what happened inside a logged block [geech]:

    This now works: 
      log { ... }.map { ... }

    Instead of doing:
      result = []
      log { result = ... }
      result.map { ... }

* Added "socket" option for the MySQL adapter, so you can change it to something else than "/tmp/mysql.sock" [Anna Lissa Cruz]

* Added respond_to? answers for all the attribute methods. So if Person has a name attribute retrieved from the table schema, 
  person.respond_to? "name" will return true.

* Added Base.benchmark which can be used to aggregate logging and benchmark, so you can measure and represent multiple statements in a single block.
  Usage (hides all the SQL calls for the individual actions and calculates total runtime for them all):

    Project.benchmark("Creating project") do
      project = Project.create("name" => "stuff")
      project.create_manager("name" => "David")
      project.milestones << Milestone.find_all
    end

* Added logging of invalid SQL statements [Suggested by Daniel Von Fange]

* Added alias Errors#[] for Errors#on, so you can now say person.errors["name"] to retrieve the errors for name [Andreas Schwarz]

* Added RubyGems require attempt if sqlite-ruby is not available through regular methods.

* Added compatibility with 2.x series of sqlite-ruby drivers. [Jamis Buck]

* Added type safety for association assignments, so a ActiveRecord::AssociationTypeMismatch will be raised if you attempt to
  assign an object that's not of the associated class. This cures the problem with nil giving id = 4 and fixnums giving id = 1 on 
  mistaken association assignments. [Reported by Andreas Schwarz]

* Added the option to keep many fixtures in one single YAML document [what-a-day]

* Added the class method "inheritance_column" that can be overwritten to return the name of an alternative column than "type" for storing
  the type for inheritance hierarchies. [Dave Steinberg]

* Added [] and []= as an alternative way to access attributes when the regular methods have been overwritten [Dave Steinberg]

* Added the option to observer more than one class at the time by specifying observed_class as an array

* Added auto-id propagation support for tables with arbitrary primary keys that have autogenerated sequences associated with them 
  on PostgreSQL. [Dave Steinberg]

* Changed that integer and floats set to "" through attributes= remain as NULL. This was especially a problem for scaffolding and postgresql. (#49)

* Changed the MySQL Adapter to rely on MySQL for its defaults for socket, host, and port [Andreas Schwarz]

* Changed ActionControllerError to decent from StandardError instead of Exception. It can now be caught by a generic rescue.

* Changed class inheritable attributes to not use eval [Caio Chassot]

* Changed Errors#add to now use "invalid" as the default message instead of true, which means full_messages work with those [Marcel Molina Jr]

* Fixed spelling on Base#add_on_boundry_breaking to Base#add_on_boundary_breaking (old naming still works) [Marcel Molina Jr.]

* Fixed that entries in the has_and_belongs_to_many join table didn't get removed when an associated object was destroyed.

* Fixed unnecessary calls to SET AUTOCOMMIT=0/1 for MySQL adapter [Andreas Schwarz]

* Fixed PostgreSQL defaults are now handled gracefully [Dave Steinberg]

* Fixed increment/decrement_counter are now atomic updates [Andreas Schwarz]

* Fixed the problems the Inflector had turning Attachment into attuchments and Cases into Casis [radsaq/Florian Gross]

* Fixed that cloned records would point attribute references on the parent object [Andreas Schwarz]

* Fixed SQL for type call on inheritance hierarchies [Caio Chassot]

* Fixed bug with typed inheritance [Florian Weber]

* Fixed a bug where has_many collection_count wouldn't use the conditions specified for that association


*0.9.5*

* Expanded the table_name guessing rules immensely [Florian Green]. Documentation:

    Guesses the table name (in forced lower-case) based on the name of the class in the inheritance hierarchy descending
    directly from ActiveRecord. So if the hierarchy looks like: Reply < Message < ActiveRecord, then Message is used
    to guess the table name from even when called on Reply. The guessing rules are as follows:
    * Class name ends in "x", "ch" or "ss": "es" is appended, so a Search class becomes a searches table.
    * Class name ends in "y" preceded by a consonant or "qu": The "y" is replaced with "ies", 
      so a Category class becomes a categories table. 
    * Class name ends in "fe": The "fe" is replaced with "ves", so a Wife class becomes a wives table.
    * Class name ends in "lf" or "rf": The "f" is replaced with "ves", so a Half class becomes a halves table.
    * Class name ends in "person": The "person" is replaced with "people", so a Salesperson class becomes a salespeople table.
    * Class name ends in "man": The "man" is replaced with "men", so a Spokesman class becomes a spokesmen table.
    * Class name ends in "sis": The "i" is replaced with an "e", so a Basis class becomes a bases table.
    * Class name ends in "tum" or "ium": The "um" is replaced with an "a", so a Datum class becomes a data table.
    * Class name ends in "child": The "child" is replaced with "children", so a NodeChild class becomes a node_children table.
    * Class name ends in an "s": No additional characters are added or removed.
    * Class name doesn't end in "s": An "s" is appended, so a Comment class becomes a comments table.
    * Class name with word compositions: Compositions are underscored, so CreditCard class becomes a credit_cards table.
    Additionally, the class-level table_name_prefix is prepended to the table_name and the table_name_suffix is appended.
    So if you have "myapp_" as a prefix, the table name guess for an Account class becomes "myapp_accounts".
    
    You can also overwrite this class method to allow for unguessable links, such as a Mouse class with a link to a
    "mice" table. Example:
    
      class Mouse < ActiveRecord::Base
         def self.table_name() "mice" end
      end
  
  This conversion is now done through an external class called Inflector residing in lib/active_record/support/inflector.rb.

* Added find_all_in_collection to has_many defined collections. Works like this:

    class Firm < ActiveRecord::Base
      has_many :clients
    end
    
    firm.id # => 1
    firm.find_all_in_clients "revenue > 1000" # SELECT * FROM clients WHERE firm_id = 1 AND revenue > 1000

  [Requested by Dave Thomas]

* Fixed finders for inheritance hierarchies deeper than one level [Florian Weber]

* Added add_on_boundry_breaking to errors to accompany add_on_empty as a default validation method. It's used like this:

    class Person < ActiveRecord::Base
      protected
        def validation
          errors.add_on_boundry_breaking "password", 3..20
        end
    end
    
  This will add an error to the tune of "is too short (minimum is 3 characters)" or "is too long (minimum is 20 characters)" if
  the password is outside the boundry. The messages can be changed by passing a third and forth parameter as message strings.

* Implemented a clone method that works properly with AR. It returns a clone of the record that 
  hasn't been assigned an id yet and is treated as a new record.

* Allow for domain sockets in PostgreSQL by not assuming localhost when no host is specified [Scott Barron]

* Fixed that bignums are saved properly instead of attempted to be YAMLized [Andreas Schwartz]

* Fixed a bug in the GEM where the rdoc options weren't being passed according to spec [Chad Fowler]

* Fixed a bug with the exclusively_dependent option for has_many


*0.9.4*

* Correctly guesses the primary key when the class is inside a module [Dave Steinberg].

* Added [] and []= as alternatives to read_attribute and write_attribute [Dave Steinberg]

* has_and_belongs_to_many now accepts an :order key to determine in which order the collection is returned [radsaq].

* The ids passed to find and find_on_conditions are now automatically sanitized.

* Added escaping of plings in YAML content.

* Multi-parameter assigns where all the parameters are empty will now be set to nil instead of a new instance of their class.

* Proper type within an inheritance hierarchy is now ensured already at object initialization (instead of first at create)


*0.9.3*

* Fixed bug with using a different primary key name together with has_and_belongs_to_many [Investigation by Scott] 

* Added :exclusively_dependent option to the has_many association macro. The doc reads:

    If set to true all the associated object are deleted in one SQL statement without having their
    before_destroy callback run. This should only be used on associations that depend solely on 
    this class and don't need to do any clean-up in before_destroy. The upside is that it's much
    faster, especially if there's a counter_cache involved.

* Added :port key to connection options, so the PostgreSQL and MySQL adapters can connect to a database server
  running on another port than the default.

* Converted the new natural singleton methods that prevented AR objects from being saved by PStore
  (and hence be placed in a Rails session) to a module. [Florian Weber]

* Fixed the use of floats (was broken since 0.9.0+)

* Fixed PostgreSQL adapter so default values are displayed properly when used in conjunction with 
  Action Pack scaffolding.

* Fixed booleans support for PostgreSQL (use real true/false on boolean fields instead of 0/1 on tinyints) [radsaq]


*0.9.2*

* Added static method for instantly updating a record

* Treat decimal and numeric as Ruby floats [Andreas Schwartz]

* Treat chars as Ruby strings (fixes problem for Action Pack form helpers too)

* Removed debugging output accidently left in (which would screw web applications)


*0.9.1*

* Added MIT license

* Added natural object-style assignment for has_and_belongs_to_many associations. Consider the following model:

    class Event < ActiveRecord::Base
      has_one_and_belongs_to_many :sponsors
    end
    
    class Sponsor < ActiveRecord::Base
      has_one_and_belongs_to_many :sponsors
    end

  Earlier, you'd have to use synthetic methods for creating associations between two objects of the above class:
  
    roskilde_festival.add_to_sponsors(carlsberg)
    roskilde_festival.remove_from_sponsors(carlsberg)

    nike.add_to_events(world_cup)
    nike.remove_from_events(world_cup)
    
  Now you can use regular array-styled methods:
  
    roskilde_festival.sponsors << carlsberg
    roskilde_festival.sponsors.delete(carlsberg)

    nike.events << world_cup
    nike.events.delete(world_cup)

* Added delete method for has_many associations. Using this will nullify an association between the has_many and the belonging
  object by setting the foreign key to null. Consider this model:
  
    class Post < ActiveRecord::Base
      has_many :comments
    end

    class Comment < ActiveRecord::Base
      belongs_to :post
    end

  You could do something like:

    funny_comment.has_post? # => true
    announcement.comments.delete(funny_comment)
    funny_comment.has_post? # => false


*0.9.0*

* Active Record is now thread safe! (So you can use it with Cerise and WEBrick applications)
  [Implementation idea by Michael Neumann, debugging assistance by Jamis Buck]

* Improved performance by roughly 400% on a basic test case of pulling 100 records and querying one attribute. 
  This brings the tax for using Active Record instead of "riding on the metal" (using MySQL-ruby C-driver directly) down to ~50%.
  Done by doing lazy type conversions and caching column information on the class-level.

* Added callback objects and procs as options for implementing the target for callback macros.

* Added "counter_cache" option to belongs_to that automates the usage of increment_counter and decrement_counter. Consider:

    class Post < ActiveRecord::Base
      has_many :comments
    end

    class Comment < ActiveRecord::Base
      belongs_to :post
    end

  Iterating over 100 posts like this:
  
    <% for post in @posts %>
      <%= post.title %> has <%= post.comments_count %> comments
    <% end %>
    
  Will generate 100 SQL count queries -- one for each call to post.comments_count. If you instead add a "comments_count" int column
  to the posts table and rewrite the comments association macro with:

    class Comment < ActiveRecord::Base
      belongs_to :post, :counter_cache => true
    end
  
  Those 100 SQL count queries will be reduced to zero. Beware that counter caching is only appropriate for objects that begin life
  with the object it's specified to belong with and is destroyed like that as well. Typically objects where you would also specify
  :dependent => true. If your objects switch from one belonging to another (like a post that can be move from one category to another),
  you'll have to manage the counter yourself. 

* Added natural object-style assignment for has_one and belongs_to associations. Consider the following model:

    class Project < ActiveRecord::Base
      has_one :manager
    end
    
    class Manager < ActiveRecord::Base
      belongs_to :project
    end
  
  Earlier, assignments would work like following regardless of which way the assignment told the best story:
  
    active_record.manager_id = david.id
  
  Now you can do it either from the belonging side:

    david.project = active_record
  
  ...or from the having side:
  
    active_record.manager = david
  
  If the assignment happens from the having side, the assigned object is automatically saved. So in the example above, the 
  project_id attribute on david would be set to the id of active_record, then david would be saved.

* Added natural object-style assignment for has_many associations [Florian Weber]. Consider the following model:

    class Project < ActiveRecord::Base
      has_many :milestones
    end
    
    class Milestone < ActiveRecord::Base
      belongs_to :project
    end
  
  Earlier, assignments would work like following regardless of which way the assignment told the best story:
  
    deadline.project_id = active_record.id
  
  Now you can do it either from the belonging side:

    deadline.project = active_record
  
  ...or from the having side:
  
    active_record.milestones << deadline
  
  The milestone is automatically saved with the new foreign key.

* API CHANGE: Attributes for text (or blob or similar) columns will now have unknown classes stored using YAML instead of using
  to_s. (Known classes that won't be yamelized are: String, NilClass, TrueClass, FalseClass, Fixnum, Date, and Time).
  Likewise, data pulled out of text-based attributes will be attempted converged using Yaml if they have the "--- " header.
  This was primarily done to be enable the storage of hashes and arrays without wrapping them in aggregations, so now you can do:
  
    user = User.find(1)
    user.preferences = { "background" => "black", "display" => large }
    user.save
    
    User.find(1).preferences # => { "background" => "black", "display" => large }
  
  Please note that this method should only be used when you don't care about representing the object in proper columns in
  the database. A money object consisting of an amount and a currency is still a much better fit for a value object done through
  aggregations than this new option.

* POSSIBLE CODE BREAKAGE: As a consequence of the lazy type conversions, it's a bad idea to reference the @attributes hash
  directly (it always was, but now it's paramount that you don't). If you do, you won't get the type conversion. So to implement
  new accessors for existing attributes, use read_attribute(attr_name) and write_attribute(attr_name, value) instead. Like this:
  
    class Song < ActiveRecord::Base
      # Uses an integer of seconds to hold the length of the song
      
      def length=(minutes)
        write_attribute("length", minutes * 60)
      end
      
      def length
        read_attribute("length") / 60
      end
    end

  The clever kid will notice that this opens a door to sidestep the automated type conversion by using @attributes directly.
  This is not recommended as read/write_attribute may be granted additional responsibilities in the future, but if you think
  you know what you're doing and aren't afraid of future consequences, this is an option.

* Applied a few minor bug fixes reported by Daniel Von Fange.


*0.8.4*

_Reflection_

* Added ActiveRecord::Reflection with a bunch of methods and classes for reflecting in aggregations and associations.

* Added Base.columns and Base.content_columns which returns arrays of column description (type, default, etc) objects.

* Added Base#attribute_names which returns an array of names for the attributes available on the object.

* Added Base#column_for_attribute(name) which returns the column description object for the named attribute.


_Misc_

* Added multi-parameter assignment:

    # Instantiate objects for all attribute classes that needs more than one constructor parameter. This is done
    # by calling new on the column type or aggregation type (through composed_of) object with these parameters.
    # So having the pairs written_on(1) = "2004", written_on(2) = "6", written_on(3) = "24", will instantiate
    # written_on (a date type) with Date.new("2004", "6", "24"). You can also specify a typecast character in the
    # parenteses to have the parameters typecasted before they're used in the constructor. Use i for Fixnum, f for Float,
    # s for String, and a for Array.
  
  This is incredibly useful for assigning dates from HTML drop-downs of month, year, and day.

* Fixed bug with custom primary key column name and Base.find on multiple parameters.

* Fixed bug with dependent option on has_one associations if there was no associated object.


*0.8.3*

_Transactions_

* Added transactional protection for destroy (important for the new :dependent option) [Suggested by Carl Youngblood]

* Fixed so transactions are ignored on MyISAM tables for MySQL (use InnoDB to get transactions)

* Changed transactions so only exceptions will cause a rollback, not returned false.


_Mapping_

* Added support for non-integer primary keys [Aredridel/earlier work by Michael Neumann]
  
    User.find "jdoe"
    Product.find "PDKEY-INT-12"

* Added option to specify naming method for primary key column. ActiveRecord::Base.primary_key_prefix_type can either
  be set to nil, :table_name, or :table_name_with_underscore. :table_name will assume that Product class has a primary key
  of "productid" and :table_name_with_underscore will assume "product_id". The default nil will just give "id".
    
* Added an overwriteable primary_key method that'll instruct AR to the name of the 
  id column [Aredridele/earlier work by Guan Yang]
    
    class Project < ActiveRecord::Base
      def self.primary_key() "project_id" end
    end

* Fixed that Active Records can safely associate inside and out of modules.

    class MyApplication::Account < ActiveRecord::Base
      has_many :clients # will look for MyApplication::Client
      has_many :interests, :class_name => "Business::Interest" # will look for Business::Interest
    end

* Fixed that Active Records can safely live inside modules [Aredridel]

    class MyApplication::Account < ActiveRecord::Base
    end


_Misc_

* Added freeze call to value object assignments to ensure they remain immutable [Spotted by Gavin Sinclair]
 
* Changed interface for specifying observed class in observers. Was OBSERVED_CLASS constant, now is 
  observed_class() class method. This is more consistant with things like self.table_name(). Works like this:

    class AuditObserver < ActiveRecord::Observer
      def self.observed_class() Account end
      def after_update(account)
        AuditTrail.new(account, "UPDATED")
      end
    end

  [Suggested by Gavin Sinclair]

* Create new Active Record objects by setting the attributes through a block. Like this:

    person = Person.new do |p|
      p.name = 'Freddy'
      p.age  = 19
    end

  [Suggested by Gavin Sinclair]


*0.8.2*

* Added inheritable callback queues that can ensure that certain callback methods or inline fragments are
  run throughout the entire inheritance hierarchy. Regardless of whether a descendent overwrites the callback
  method:
  
    class Topic < ActiveRecord::Base
      before_destroy :destroy_author, 'puts "I'm an inline fragment"'
    end
  
  Learn more in link:classes/ActiveRecord/Callbacks.html

* Added :dependent option to has_many and has_one, which will automatically destroy associated objects when 
  the holder is destroyed:
  
    class Album < ActiveRecord::Base
      has_many :tracks, :dependent => true
    end
    
  All the associated tracks are destroyed when the album is.

* Added Base.create as a factory that'll create, save, and return a new object in one step.

* Automatically convert strings in config hashes to symbols for the _connection methods. This allows you
  to pass the argument hashes directly from yaml. (Luke)

* Fixed the install.rb to include simple.rb [Spotted by Kevin Bullock]

* Modified block syntax to better follow our code standards outlined in 
  http://www.rubyonrails.org/CodingStandards


*0.8.1*

* Added object-level transactions [Thanks to Austin Ziegler for Transaction::Simple]

* Changed adapter-specific connection methods to use centralized ActiveRecord::Base.establish_connection,
  which is parametized through a config hash with symbol keys instead of a regular parameter list.
  This will allow for database connections to be opened in a more generic fashion. (Luke)
  
  NOTE: This requires all *_connections to be updated! Read more in:
  http://ar.rubyonrails.org/classes/ActiveRecord/Base.html#M000081

* Fixed SQLite adapter so objects fetched from has_and_belongs_to_many have proper attributes
  (t.name is now name). [Spotted by Garrett Rooney]

* Fixed SQLite adapter so dates are returned as Date objects, not Time objects [Spotted by Gavin Sinclair]

* Fixed requirement of date class, so date conversions are succesful regardless of whether you 
  manually require date or not.


*0.8.0*

* Added transactions

* Changed Base.find to also accept either a list (1, 5, 6) or an array of ids ([5, 7]) 
  as parameter and then return an array of objects instead of just an object

* Fixed method has_collection? for has_and_belongs_to_many macro to behave as a 
  collection, not an association

* Fixed SQLite adapter so empty or nil values in columns of datetime, date, or time type
  aren't treated as current time [Spotted by Gavin Sinclair]


*0.7.6*

* Fixed the install.rb to create the lib/active_record/support directory [Spotted by Gavin Sinclair]
* Fixed that has_association? would always return true [Spotted by Daniel Von Fange]