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
|
* Fix preloading of associations which unscope a default scope.
Fixes #11036.
*Byron Bischoff*
* Added SchemaDumper support for tables with jsonb columns.
*Ted O'Meara*
* Deprecate `sanitize_sql_hash_for_conditions` without replacement. Using a
`Relation` for performing queries and updates is the prefered API.
*Sean Griffin*
* Queries now properly type cast values that are part of a join statement,
even when using type decorators such as `serialize`.
*Melanie Gilman & Sean Griffin*
* MySQL enum type lookups, with values matching another type, no longer result
in an endless loop.
Fixes #17402.
*Yves Senn*
* Raise `ArgumentError` when the body of a scope is not callable.
*Mauro George*
* Use type column first in multi-column indexes created with `add-reference`.
*Derek Prior*
* Fix `Relation.rewhere` to work with Range values.
*Dan Olson*
* `AR::UnknownAttributeError` now includes the class name of a record.
User.new(name: "Yuki Nishijima", project_attributes: {name: "kaminari"})
# => ActiveRecord::UnknownAttributeError: unknown attribute 'name' for User.
*Yuki Nishijima*
* Fix regression causing `after_create` callbacks to run before associated
records are autosaved.
Fixes #17209.
*Agis Anastasopoulos*
* Honor overridden `rack.test` in Rack environment for the connection
management middleware.
*Simon Eskildsen*
* Add a truncate method to the connection.
*Aaron Patterson*
* Don't autosave unchanged has_one through records.
*Alan Kennedy*, *Steve Parrington*
* Do not dump foreign keys for ignored tables.
*Yves Senn*
* PostgreSQL adapter correctly dumps foreign keys targeting tables
outside the schema search path.
Fixes #16907.
*Matthew Draper*, *Yves Senn*
* When a thread is killed, rollback the active transaction, instead of
committing it during the stack unwind. Previously, we could commit half-
completed work. This fix only works for Ruby 2.0+; on 1.9, we can't
distinguish a thread kill from an ordinary non-local (block) return, so must
default to committing.
*Chris Hanks*
* A `NullRelation` should represent nothing. This fixes a bug where
`Comment.where(post_id: Post.none)` returned a non-empty result.
Fixes #15176.
*Matthew Draper*, *Yves Senn*
* Include default column limits in schema.rb. Allows defaults to be changed
in the future without affecting old migrations that assumed old defaults.
*Jeremy Kemper*
* MySQL: schema.rb now includes TEXT and BLOB column limits.
*Jeremy Kemper*
* MySQL: correct LONGTEXT and LONGBLOB limits from 2GB to their true 4GB.
*Jeremy Kemper*
* SQLite3Adapter now checks for views in `table_exists?`. Fixes #14041.
*Girish Sonawane*
* Introduce `connection.supports_views?` to check whether the current adapter
has support for SQL views. Connection adapters should define this method.
*Yves Senn*
* Allow included modules to override association methods.
Fixes #16684.
*Yves Senn*
* Schema loading rake tasks (like `db:schema:load` and `db:setup`) maintain
the database connection to the current environment.
Fixes #16757.
*Joshua Cody*, *Yves Senn*
* MySQL: set the connection collation along with the charset.
Sets the connection collation to the database collation configured in
database.yml. Otherwise, `SET NAMES utf8mb4` will use the default
collation for that charset (utf8mb4_general_ci) when you may have chosen
a different collation, like utf8mb4_unicode_ci.
This only applies to literal string comparisons, not column values, so it
is unlikely to affect you.
*Jeremy Kemper*
* `default_sequence_name` from the PostgreSQL adapter returns a `String`.
*Yves Senn*
* Fixed a regression where whitespaces were stripped from DISTINCT queries in
PostgreSQL.
*Agis Anastasopoulos*
Fixes #16623.
* Fix has_many :through relation merging failing when dynamic conditions are
passed as a lambda with an arity of one.
Fixes #16128.
*Agis Anastasopoulos*
* Fixed `Relation#exists?` to work with polymorphic associations.
Fixes #15821.
*Kassio Borges*
* Currently, Active Record rescues any errors raised within
`after_rollback`/`after_create` callbacks and prints them to the logs.
Future versions of Rails will not rescue these errors anymore and
just bubble them up like the other callbacks.
This commit adds an opt-in flag to enable not rescuing the errors.
Example:
# Do not swallow errors in after_commit/after_rollback callbacks.
config.active_record.raise_in_transactional_callbacks = true
Fixes #13460.
*arthurnn*
* Fixed an issue where custom accessor methods (such as those generated by
`enum`) with the same name as a global method are incorrectly overridden
when subclassing.
Fixes #16288.
*Godfrey Chan*
* `*_was` and `changes` now work correctly for in-place attribute changes as
well.
*Sean Griffin*
* Fix regression on `after_commit` that did not fire with nested transactions.
Fixes #16425.
*arthurnn*
* Do not try to write timestamps when a table has no timestamps columns.
Fixes #8813.
*Sergey Potapov*
* `index_exists?` with `:name` option does verify specified columns.
Example:
add_index :articles, :title, name: "idx_title"
# Before:
index_exists? :articles, :title, name: "idx_title" # => `true`
index_exists? :articles, :body, name: "idx_title" # => `true`
# After:
index_exists? :articles, :title, name: "idx_title" # => `true`
index_exists? :articles, :body, name: "idx_title" # => `false`
*Yves Senn*, *Matthew Draper*
* When calling `update_columns` on a record that is not persisted, the error
message now reflects whether that object is a new record or has been
destroyed.
*Lachlan Sylvester*
* Define `id_was` to get the previous value of the primary key.
Currently when we call `id_was` and we have a custom primary key name,
Active Record will return the current value of the primary key. This
makes it impossible to correctly do an update operation if you change the
id.
Fixes #16413.
*Rafael Mendonça França*
* Deprecate `DatabaseTasks.load_schema` to act on the current connection.
Use `.load_schema_current` instead. In the future `load_schema` will
require the `configuration` to act on as an argument.
*Yves Senn*
* Fixed automatic maintaining test schema to properly handle sql structure
schema format.
Fixes #15394.
*Wojciech Wnętrzak*
* Fix type casting to Decimal from Float with large precision.
*Tomohiro Hashidate*
* Deprecate `Reflection#source_macro`
`Reflection#source_macro` is no longer needed in Active Record
source so it has been deprecated. Code that used `source_macro`
was removed in #16353.
*Eileen M. Uchtitelle*, *Aaron Patterson*
* No verbose backtrace by `db:drop` when database does not exist.
Fixes #16295.
*Kenn Ejima*
* Add support for PostgreSQL JSONB.
Example:
create_table :posts do |t|
t.jsonb :meta_data
end
*Philippe Creux*, *Chris Teague*
* `db:purge` with MySQL respects `Rails.env`.
*Yves Senn*
* `change_column_default :table, :column, nil` with PostgreSQL will issue a
`DROP DEFAULT` instead of a `DEFAULT NULL` query.
Fixes #16261.
*Matthew Draper*, *Yves Senn*
* Allow to specify a type for the foreign key column in `references`
and `add_reference`.
Example:
change_table :vehicle do |t|
t.references :station, type: :uuid
end
*Andrey Novikov*, *Łukasz Sarnacki*
* `create_join_table` removes a common prefix when generating the join table.
This matches the existing behavior of HABTM associations.
Fixes #13683.
*Stefan Kanev*
* Do not swallow errors on `compute_type` when having a bad `alias_method` on
a class.
*arthurnn*
* PostgreSQL invalid `uuid` are convert to nil.
*Abdelkader Boudih*
* Restore 4.0 behavior for using serialize attributes with `JSON` as coder.
With 4.1.x, `serialize` started returning a string when `JSON` was passed as
the second attribute. It will now return a hash as per previous versions.
Example:
class Post < ActiveRecord::Base
serialize :comment, JSON
end
class Comment
include ActiveModel::Model
attr_accessor :category, :text
end
post = Post.create!
post.comment = Comment.new(category: "Animals", text: "This is a comment about squirrels.")
post.save!
# 4.0
post.comment # => {"category"=>"Animals", "text"=>"This is a comment about squirrels."}
# 4.1 before
post.comment # => "#<Comment:0x007f80ab48ff98>"
# 4.1 after
post.comment # => {"category"=>"Animals", "text"=>"This is a comment about squirrels."}
When using `JSON` as the coder in `serialize`, Active Record will use the
new `ActiveRecord::Coders::JSON` coder which delegates its `dump/load` to
`ActiveSupport::JSON.encode/decode`. This ensures special objects are dumped
correctly using the `#as_json` hook.
To keep the previous behaviour, supply a custom coder instead
([example](https://gist.github.com/jenncoop/8c4142bbe59da77daa63)).
Fixes #15594.
*Jenn Cooper*
* Do not use `RENAME INDEX` syntax for MariaDB 10.0.
Fixes #15931.
*Jeff Browning*
* Calling `#empty?` on a `has_many` association would use the value from the
counter cache if one exists.
*David Verhasselt*
* Fix the schema dump generated for tables without constraints and with
primary key with default value of custom PostgreSQL function result.
Fixes #16111.
*Andrey Novikov*
* Fix the SQL generated when a `delete_all` is run on an association to not
produce an `IN` statements.
Before:
UPDATE "categorizations" SET "category_id" = NULL WHERE
"categorizations"."category_id" = 1 AND "categorizations"."id" IN (1, 2)
After:
UPDATE "categorizations" SET "category_id" = NULL WHERE
"categorizations"."category_id" = 1
*Eileen M. Uchitelle, Aaron Patterson*
* Avoid type casting boolean and `ActiveSupport::Duration` values to numeric
values for string columns. Otherwise, in some database, the string column
values will be coerced to a numeric allowing false or 0.seconds match any
string starting with a non-digit.
Example:
App.where(apikey: false) # => SELECT * FROM users WHERE apikey = '0'
*Dylan Thacker-Smith*
* Add a `:required` option to singular associations, providing a nicer
API for presence validations on associations.
*Sean Griffin*
* Fixed error in `reset_counters` when associations have `select` scope.
(Call to `count` generates invalid SQL.)
*Cade Truitt*
* After a successful `reload`, `new_record?` is always false.
Fixes #12101.
*Matthew Draper*
* PostgreSQL renaming table doesn't attempt to rename non existent sequences.
*Abdelkader Boudih*
* Move 'dependent: :destroy' handling for `belongs_to`
from `before_destroy` to `after_destroy` callback chain
Fixes #12380.
*Ivan Antropov*
* Detect in-place modifications on String attributes.
Before this change, an attribute modified in-place had to be marked as
changed in order for it to be persisted in the database. Now it is no longer
required.
Before:
user = User.first
user.name << ' Griffin'
user.name_will_change!
user.save
user.reload.name # => "Sean Griffin"
After:
user = User.first
user.name << ' Griffin'
user.save
user.reload.name # => "Sean Griffin"
*Sean Griffin*
* Add `ActiveRecord::Base#validate!` that raises `RecordInvalid` if the record
is invalid.
*Bogdan Gusiev*, *Marc Schütz*
* Support for adding and removing foreign keys. Foreign keys are now
a part of `schema.rb`. This is supported by Mysql2Adapter, MysqlAdapter
and PostgreSQLAdapter.
Many thanks to *Matthew Higgins* for laying the foundation with his work on
[foreigner](https://github.com/matthuhiggins/foreigner).
Example:
# within your migrations:
add_foreign_key :articles, :authors
remove_foreign_key :articles, :authors
*Yves Senn*
* Fix subtle bugs regarding attribute assignment on models with no primary
key. `'id'` will no longer be part of the attributes hash.
*Sean Griffin*
* Deprecate automatic counter caches on `has_many :through`. The behavior was
broken and inconsistent.
*Sean Griffin*
* `preload` preserves readonly flag for associations.
See #15853.
*Yves Senn*
* Assume numeric types have changed if they were assigned to a value that
would fail numericality validation, regardless of the old value. Previously
this would only occur if the old value was 0.
Example:
model = Model.create!(number: 5)
model.number = '5wibble'
model.number_changed? # => true
Fixes #14731.
*Sean Griffin*
* `reload` no longer merges with the existing attributes.
The attribute hash is fully replaced. The record is put into the same state
as it would be with `Model.find(model.id)`.
*Sean Griffin*
* The object returned from `select_all` must respond to `column_types`.
If this is not the case a `NoMethodError` is raised.
*Sean Griffin*
* Detect in-place modifications of PG array types
*Sean Griffin*
* Add `bin/rake db:purge` task to empty the current database.
*Yves Senn*
* Deprecate `serialized_attributes` without replacement.
*Sean Griffin*
* Correctly extract IPv6 addresses from `DATABASE_URI`: the square brackets
are part of the URI structure, not the actual host.
Fixes #15705.
*Andy Bakun*, *Aaron Stone*
* Ensure both parent IDs are set on join records when both sides of a
through association are new.
*Sean Griffin*
* `ActiveRecord::Dirty` now detects in-place changes to mutable values.
Serialized attributes on ActiveRecord models will no longer save when
unchanged.
Fixes #8328.
*Sean Griffin*
* `Pluck` now works when selecting columns from different tables with the same
name.
Fixes #15649.
*Sean Griffin*
* Remove `cache_attributes` and friends. All attributes are cached.
*Sean Griffin*
* Remove deprecated method `ActiveRecord::Base.quoted_locking_column`.
*Akshay Vishnoi*
* `ActiveRecord::FinderMethods.find` with block can handle proc parameter as
`Enumerable#find` does.
Fixes #15382.
*James Yang*
* Make timezone aware attributes work with PostgreSQL array columns.
Fixes #13402.
*Kuldeep Aggarwal*, *Sean Griffin*
* `ActiveRecord::SchemaMigration` has no primary key regardless of the
`primary_key_prefix_type` configuration.
Fixes #15051.
*JoseLuis Torres*, *Yves Senn*
* `rake db:migrate:status` works with legacy migration numbers like `00018_xyz.rb`.
Fixes #15538.
*Yves Senn*
* Baseclass becomes! subclass.
Before this change, a record which changed its STI type, could not be
updated.
Fixes #14785.
*Matthew Draper*, *Earl St Sauver*, *Edo Balvers*
* Remove deprecated `ActiveRecord::Migrator.proper_table_name`. Use the
`proper_table_name` instance method on `ActiveRecord::Migration` instead.
*Akshay Vishnoi*
* Fix regression on eager loading association based on SQL query rather than
existing column.
Fixes #15480.
*Lauro Caetano*, *Carlos Antonio da Silva*
* Deprecate returning `nil` from `column_for_attribute` when no column exists.
It will return a null object in Rails 5.0
*Sean Griffin*
* Implemented `ActiveRecord::Base#pretty_print` to work with PP.
*Ethan*
* Preserve type when dumping PostgreSQL point, bit, bit varying and money
columns.
*Yves Senn*
* New records remain new after YAML serialization.
*Sean Griffin*
* PostgreSQL support default values for enum types. Fixes #7814.
*Yves Senn*
* PostgreSQL `default_sequence_name` respects schema. Fixes #7516.
*Yves Senn*
* Fixed `columns_for_distinct` of postgresql adapter to work correctly
with orders without sort direction modifiers.
*Nikolay Kondratyev*
* PostgreSQL `reset_pk_sequence!` respects schemas. Fixes #14719.
*Yves Senn*
* Keep PostgreSQL `hstore` and `json` attributes as `Hash` in `@attributes`.
Fixes duplication in combination with `store_accessor`.
Fixes #15369.
*Yves Senn*
* `rake railties:install:migrations` respects the order of railties.
*Arun Agrawal*
* Fix redefine a `has_and_belongs_to_many` inside inherited class
Fixing regression case, where redefining the same `has_and_belongs_to_many`
definition into a subclass would raise.
Fixes #14983.
*arthurnn*
* Fix `has_and_belongs_to_many` public reflection.
When defining a `has_and_belongs_to_many`, internally we convert that to two has_many.
But as `reflections` is a public API, people expect to see the right macro.
Fixes #14682.
*arthurnn*
* Fixed serialization for records with an attribute named `format`.
Fixes #15188.
*Godfrey Chan*
* When a `group` is set, `sum`, `size`, `average`, `minimum` and `maximum`
on a NullRelation should return a Hash.
*Kuldeep Aggarwal*
* Fixed serialized fields returning serialized data after being updated with
`update_column`.
*Simon Hørup Eskildsen*
* Fixed polymorphic eager loading when using a String as foreign key.
Fixes #14734.
*Lauro Caetano*
* Change belongs_to touch to be consistent with timestamp updates
If a model is set up with a belongs_to: touch relationship the parent
record will only be touched if the record was modified. This makes it
consistent with timestamp updating on the record itself.
*Brock Trappitt*
* Fixed the inferred table name of a `has_and_belongs_to_many` auxiliar
table inside a schema.
Fixes #14824.
*Eric Chahin*
* Remove unused `:timestamp` type. Transparently alias it to `:datetime`
in all cases. Fixes inconsistencies when column types are sent outside of
`ActiveRecord`, such as for XML Serialization.
*Sean Griffin*
* Fix bug that added `table_name_prefix` and `table_name_suffix` to
extension names in PostgreSQL when migrating.
*Joao Carlos*
* The `:index` option in migrations, which previously was only available for
`references`, now works with any column types.
*Marc Schütz*
* Add support for counter name to be passed as parameter on `CounterCache::ClassMethods#reset_counters`.
*jnormore*
* Restrict deletion of record when using `delete_all` with `uniq`, `group`, `having`
or `offset`.
In these cases the generated query ignored them and that caused unintended
records to be deleted.
Fixes #11985.
*Leandro Facchinetti*
* Floats with limit >= 25 that get turned into doubles in MySQL no longer have
their limit dropped from the schema.
Fixes #14135.
*Aaron Nelson*
* Fix how to calculate associated class name when using namespaced `has_and_belongs_to_many`
association.
Fixes #14709.
*Kassio Borges*
* `ActiveRecord::Relation::Merger#filter_binds` now compares equivalent symbols and
strings in column names as equal.
This fixes a rare case in which more bind values are passed than there are
placeholders for them in the generated SQL statement, which can make PostgreSQL
throw a `StatementInvalid` exception.
*Nat Budin*
* Fix `stored_attributes` to correctly merge the details of stored
attributes defined in parent classes.
Fixes #14672.
*Brad Bennett*, *Jessica Yao*, *Lakshmi Parthasarathy*
* `change_column_default` allows `[]` as argument to `change_column_default`.
Fixes #11586.
*Yves Senn*
* Handle `name` and `"char"` column types in the PostgreSQL adapter.
`name` and `"char"` are special character types used internally by
PostgreSQL and are used by internal system catalogs. These field types
can sometimes show up in structure-sniffing queries that feature internal system
structures or with certain PostgreSQL extensions.
*J Smith*, *Yves Senn*
* Fix `PostgreSQLAdapter::OID::Float#type_cast` to convert Infinity and
NaN PostgreSQL values into a native Ruby `Float::INFINITY` and `Float::NAN`
Before:
Point.create(value: 1.0/0)
Point.last.value # => 0.0
After:
Point.create(value: 1.0/0)
Point.last.value # => Infinity
*Innokenty Mikhailov*
* Allow the PostgreSQL adapter to handle bigserial primary key types again.
Fixes #10410.
*Patrick Robertson*
* Deprecate joining, eager loading and preloading of instance dependent
associations without replacement. These operations happen before instances
are created. The current behavior is unexpected and can result in broken
behavior.
Fixes #15024.
*Yves Senn*
* Fixed has_and_belongs_to_many's CollectionAssociation size calculation.
`has_and_belongs_to_many` should fall back to using the normal CollectionAssociation's
size calculation if the collection is not cached or loaded.
Fixes #14913, #14914.
*Fred Wu*
* Return a non zero status when running `rake db:migrate:status` and migration table does
not exist.
*Paul B.*
* Add support for module-level `table_name_suffix` in models.
This makes `table_name_suffix` work the same way as `table_name_prefix` when
using namespaced models.
*Jenner LaFave*
* Revert the behaviour of `ActiveRecord::Relation#join` changed through 4.0 => 4.1 to 4.0.
In 4.1.0 `Relation#join` is delegated to `Arel#SelectManager`.
In 4.0 series it is delegated to `Array#join`.
*Bogdan Gusiev*
* Log nil binary column values correctly.
When an object with a binary column is updated with a nil value
in that column, the SQL logger would throw an exception when trying
to log that nil value. This only occurs when updating a record
that already has a non-nil value in that column since an initial nil
value isn't included in the SQL anyway (at least, when dirty checking
is enabled.) The column's new value will now be logged as `<NULL binary data>`
to parallel the existing `<N bytes of binary data>` for non-nil values.
*James Coleman*
* Rails will now pass a custom validation context through to autosave associations
in order to validate child associations with the same context.
Fixes #13854.
*Eric Chahin*, *Aaron Nelson*, *Kevin Casey*
* Stringify all variables keys of MySQL connection configuration.
When `sql_mode` variable for MySQL adapters set in configuration as `String`
was ignored and overwritten by strict mode option.
Fixes #14895.
*Paul Nikitochkin*
* Ensure SQLite3 statements are closed on errors.
Fixes #13631.
*Timur Alperovich*
* Give `ActiveRecord::PredicateBuilder` private methods the privacy they deserve.
*Hector Satre*
* When using a custom `join_table` name on a `habtm`, rails was not saving it
on Reflections. This causes a problem when rails loads fixtures, because it
uses the reflections to set database with fixtures.
Fixes #14845.
*Kassio Borges*
* Reset the cache when modifying a Relation with cached Arel.
Additionally display a warning message to make the user aware.
*Yves Senn*
* PostgreSQL should internally use `:datetime` consistently for TimeStamp. Assures
different spellings of timestamps are treated the same.
Example:
mytimestamp.simplified_type('timestamp without time zone')
# => :datetime
mytimestamp.simplified_type('timestamp(6) without time zone')
# => also :datetime (previously would be :timestamp)
See #14513.
*Jefferson Lai*
* `ActiveRecord::Base.no_touching` no longer triggers callbacks or start empty transactions.
Fixes #14841.
*Lucas Mazza*
* Fix name collision with `Array#select!` with `Relation#select!`.
Fixes #14752.
*Earl St Sauver*
* Fixed unexpected behavior for `has_many :through` associations going through a scoped `has_many`.
If a `has_many` association is adjusted using a scope, and another `has_many :through`
uses this association, then the scope adjustment is unexpectedly neglected.
Fixes #14537.
*Jan Habermann*
* `@destroyed` should always be set to `false` when an object is duped.
*Kuldeep Aggarwal*
* Fixed `has_many` association to make it support irregular inflections.
Fixes #8928.
*arthurnn*, *Javier Goizueta*
* Fixed a problem where count used with a grouping was not returning a Hash.
Fixes #14721.
*Eric Chahin*
* `sanitize_sql_like` helper method to escape a string for safe use in an SQL
LIKE statement.
Example:
class Article
def self.search(term)
where("title LIKE ?", sanitize_sql_like(term))
end
end
Article.search("20% _reduction_")
# => Query looks like "... title LIKE '20\% \_reduction\_' ..."
*Rob Gilson*, *Yves Senn*
* Do not quote uuid default value on `change_column`.
Fixes #14604.
*Eric Chahin*
* The comparison between `Relation` and `CollectionProxy` should be consistent.
Example:
author.posts == Post.where(author_id: author.id)
# => true
Post.where(author_id: author.id) == author.posts
# => true
Fixes #13506.
*Lauro Caetano*
* Calling `delete_all` on an unloaded `CollectionProxy` no longer
generates an SQL statement containing each id of the collection:
Before:
DELETE FROM `model` WHERE `model`.`parent_id` = 1
AND `model`.`id` IN (1, 2, 3...)
After:
DELETE FROM `model` WHERE `model`.`parent_id` = 1
*Eileen M. Uchitelle*, *Aaron Patterson*
* Fixed error for aggregate methods (`empty?`, `any?`, `count`) with `select`
which created invalid SQL.
Fixes #13648.
*Simon Woker*
* PostgreSQL adapter only warns once for every missing OID per connection.
Fixes #14275.
*Matthew Draper*, *Yves Senn*
* PostgreSQL adapter automatically reloads it's type map when encountering
unknown OIDs.
Fixes #14678.
*Matthew Draper*, *Yves Senn*
* Fix insertion of records via `has_many :through` association with scope.
Fixes #3548.
*Ivan Antropov*
* Auto-generate stable fixture UUIDs on PostgreSQL.
Fixes #11524.
*Roderick van Domburg*
* Fixed a problem where an enum would overwrite values of another enum
with the same name in an unrelated class.
Fixes #14607.
*Evan Whalen*
* PostgreSQL and SQLite string columns no longer have a default limit of 255.
Fixes #13435, #9153.
*Vladimir Sazhin*, *Toms Mikoss*, *Yves Senn*
* Make possible to have an association called `records`.
Fixes #11645.
*prathamesh-sonpatki*
* `to_sql` on an association now matches the query that is actually executed, where it
could previously have incorrectly accrued additional conditions (e.g. as a result of
a previous query). `CollectionProxy` now always defers to the association scope's
`arel` method so the (incorrect) inherited one should be entirely concealed.
Fixes #14003.
*Jefferson Lai*
* Block a few default Class methods as scope name.
For instance, this will raise:
scope :public, -> { where(status: 1) }
*arthurnn*
* Fixed error when using `with_options` with lambda.
Fixes #9805.
*Lauro Caetano*
* Switch `sqlite3:///` URLs (which were temporarily
deprecated in 4.1) from relative to absolute.
If you still want the previous interpretation, you should replace
`sqlite3:///my/path` with `sqlite3:my/path`.
*Matthew Draper*
* Treat blank UUID values as `nil`.
Example:
Sample.new(uuid_field: '') #=> <Sample id: nil, uuid_field: nil>
*Dmitry Lavrov*
* Enable support for materialized views on PostgreSQL >= 9.3.
*Dave Lee*
* The PostgreSQL adapter supports custom domains. Fixes #14305.
*Yves Senn*
* PostgreSQL `Column#type` is now determined through the corresponding OID.
The column types stay the same except for enum columns. They no longer have
`nil` as type but `enum`.
See #7814.
*Yves Senn*
* Fixed error when specifying a non-empty default value on a PostgreSQL array column.
Fixes #10613.
*Luke Steensen*
* Fixed error where .persisted? throws SystemStackError for an unsaved model with a
custom primary key that didn't save due to validation error.
Fixes #14393.
*Chris Finne*
* Introduce `validate` as an alias for `valid?`.
This is more intuitive when you want to run validations but don't care about the return value.
*Henrik Nyh*
* Create indexes inline in CREATE TABLE for MySQL.
This is important, because adding an index on a temporary table after it has been created
would commit the transaction.
It also allows creating and dropping indexed tables with fewer queries and fewer permissions
required.
Example:
create_table :temp, temporary: true, as: "SELECT id, name, zip FROM a_really_complicated_query" do |t|
t.index :zip
end
# => CREATE TEMPORARY TABLE temp (INDEX (zip)) AS SELECT id, name, zip FROM a_really_complicated_query
*Cody Cutrer*, *Steve Rice*, *Rafael Mendonça Franca*
* Use singular table name in generated migrations when
`ActiveRecord::Base.pluralize_table_names` is `false`.
Fixes #13426.
*Kuldeep Aggarwal*
* `touch` accepts many attributes to be touched at once.
Example:
# touches :signed_at, :sealed_at, and :updated_at/on attributes.
Photo.last.touch(:signed_at, :sealed_at)
*James Pinto*
* `rake db:structure:dump` only dumps schema information if the schema
migration table exists.
Fixes #14217.
*Yves Senn*
* Reap connections that were checked out by now-dead threads, instead
of waiting until they disconnect by themselves. Before this change,
a suitably constructed series of short-lived threads could starve
the connection pool, without ever having more than a couple alive at
the same time.
*Matthew Draper*
* `pk_and_sequence_for` now ensures that only the pg_depend entries
pointing to pg_class, and thus only sequence objects, are considered.
*Josh Williams*
* `where.not` adds `references` for `includes` like normal `where` calls do.
Fixes #14406.
*Yves Senn*
* Extend fixture `$LABEL` replacement to allow string interpolation.
Example:
martin:
email: $LABEL@email.com
users(:martin).email # => martin@email.com
*Eric Steele*
* Add support for `Relation` be passed as parameter on `QueryCache#select_all`.
Fixes #14361.
*arthurnn*
* Passing an Active Record object to `find` or `exists?` is now deprecated.
Call `.id` on the object first.
*Aaron Patterson*
* Only use BINARY for MySQL case sensitive uniqueness check when column has a case insensitive collation.
*Ryuta Kamizono*
* Support for MySQL 5.6 fractional seconds.
*arthurnn*, *Tatsuhiko Miyagawa*
* Support for Postgres `citext` data type enabling case-insensitive where
values without needing to wrap in UPPER/LOWER sql functions.
*Troy Kruthoff*, *Lachlan Sylvester*
* Only save has_one associations if record has changes.
Previously after save related callbacks, such as `#after_commit`, were triggered when the has_one
object did not get saved to the db.
*Alan Kennedy*
* Allow strings to specify the `#order` value.
Example:
Model.order(id: 'asc').to_sql == Model.order(id: :asc).to_sql
*Marcelo Casiraghi*, *Robin Dupret*
* Dynamically register PostgreSQL enum OIDs. This prevents "unknown OID"
warnings on enum columns.
*Dieter Komendera*
* `includes` is able to detect the right preloading strategy when string
joins are involved.
Fixes #14109.
*Aaron Patterson*, *Yves Senn*
* Fixed error with validation with enum fields for records where the
value for any enum attribute is always evaluated as 0 during
uniqueness validation.
Fixes #14172.
*Vilius Luneckas* *Ahmed AbouElhamayed*
* `before_add` callbacks are fired before the record is saved on
`has_and_belongs_to_many` associations *and* on `has_many :through`
associations. Before this change, `before_add` callbacks would be fired
before the record was saved on `has_and_belongs_to_many` associations, but
*not* on `has_many :through` associations.
Fixes #14144.
* Fixed STI classes not defining an attribute method if there is a
conflicting private method defined on its ancestors.
Fixes #11569.
*Godfrey Chan*
* Coerce strings when reading attributes. Fixes #10485.
Example:
book = Book.new(title: 12345)
book.save!
book.title # => "12345"
*Yves Senn*
* Deprecate half-baked support for PostgreSQL range values with excluding beginnings.
We currently map PostgreSQL ranges to Ruby ranges. This conversion is not fully
possible because the Ruby range does not support excluded beginnings.
The current solution of incrementing the beginning is not correct and is now
deprecated. For subtypes where we don't know how to increment (e.g. `#succ`
is not defined) it will raise an `ArgumentException` for ranges with excluding
beginnings.
*Yves Senn*
* Support for user created range types in PostgreSQL.
*Yves Senn*
Please check [4-1-stable](https://github.com/rails/rails/blob/4-1-stable/activerecord/CHANGELOG.md) for previous changes.
|