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
|
* Added methods for PostgreSQL geometric data types to use in migrations
Example:
create_table :foo do |t|
t.line :foo_line
t.lseg :foo_lseg
t.box :foo_box
t.path :foo_path
t.polygon :foo_polygon
t.circle :foo_circle
end
*Mehmet Emin İNAÇ*
* Add `cache_key` to ActiveRecord::Relation.
Example:
@users = User.where("name like ?", "%Alberto%")
@users.cache_key
=> "/users/query-5942b155a43b139f2471b872ac54251f-3-20150714212107656125000"
*Alberto Fernández-Capel*
* Properly allow uniqueness validations on primary keys.
Fixes #20966.
*Sean Griffin*, *presskey*
* Don't raise an error if an association failed to destroy when `destroy` was
called on the parent (as opposed to `destroy!`).
Fixes #20991.
*Sean Griffin*
* `ActiveRecord::RecordNotFound` modified to store model name, primary_key and
id of the caller model. It allows the catcher of this exception to make
a better decision to what to do with it.
Example:
class SomeAbstractController < ActionController::Base
rescue_from ActiveRecord::RecordNotFound, with: :redirect_to_404
private def redirect_to_404(e)
return redirect_to(posts_url) if e.model == 'Post'
raise
end
end
*Sameer Rahmani*
* Deprecate the keys for association `restrict_dependent_destroy` errors in favor
of new key names.
Previously `has_one` and `has_many` associations were using the
`one` and `many` keys respectively. Both of these keys have special
meaning in I18n (they are considered to be pluralizations) so by
renaming them to `has_one` and `has_many` we make the messages more explicit
and most importantly they don't clash with linguistical systems that need to
validate translation keys (and their pluralizations).
The `:'restrict_dependent_destroy.one'` key should be replaced with
`:'restrict_dependent_destroy.has_one'`, and `:'restrict_dependent_destroy.many'`
with `:'restrict_dependent_destroy.has_many'`.
*Roque Pinel*, *Christopher Dell*
* Fix state being carried over from previous transaction.
Considering the following example where `name` is a required attribute.
Before we had `new_record?` returning `true` for a persisted record:
author = Author.create! name: 'foo'
author.name = nil
author.save # => false
author.new_record? # => true
Fixes #20824.
*Roque Pinel*
* Correctly ignore `mark_for_destruction` when `autosave` isn't set to `true`
when validating associations.
Fixes #20882.
*Sean Griffin*
* Fix a bug where counter_cache doesn't always work with polymorphic
relations.
Fixes #16407.
*Stefan Kanev*, *Sean Griffin*
* Ensure that cyclic associations with autosave don't cause duplicate errors
to be added to the parent record.
Fixes #20874.
*Sean Griffin*
* Ensure that `ActionController::Parameters` can still be passed to nested
attributes.
Fixes #20922.
*Sean Griffin*
* Deprecate force association reload by passing a truthy argument to
association method.
For collection association, you can call `#reload` on association proxy to
force a reload:
@user.posts.reload # Instead of @user.posts(true)
For singular association, you can call `#reload` on the parent object to
clear its association cache then call the association method:
@user.reload.profile # Instead of @user.profile(true)
Passing a truthy argument to force association to reload will be removed in
Rails 5.1.
*Prem Sichanugrist*
* Replaced `ActiveSupport::Concurrency::Latch` with `Concurrent::CountDownLatch`
from the concurrent-ruby gem.
*Jerry D'Antonio*
* Fix through associations using scopes having the scope merged multiple
times.
Fixes #20721.
Fixes #20727.
*Sean Griffin*
* `ActiveRecord::Base.dump_schema_after_migration` applies migration tasks
other than `db:migrate`. (eg. `db:rollback`, `db:migrate:dup`, ...)
Fixes #20743.
*Yves Senn*
* Add alternate syntax to make `change_column_default` reversible.
User can pass in `:from` and `:to` to make `change_column_default` command
become reversible.
Example:
change_column_default :posts, :status, from: nil, to: "draft"
change_column_default :users, :authorized, from: true, to: false
*Prem Sichanugrist*
* Prevent error when using `force_reload: true` on an unassigned polymorphic
belongs_to association.
Fixes #20426.
*James Dabbs*
* Correctly raise `ActiveRecord::AssociationTypeMismatch` when assigning
a wrong type to a namespaced association.
Fixes #20545.
*Diego Carrion*
* `validates_absence_of` respects `marked_for_destruction?`.
Fixes #20449.
*Yves Senn*
* Include the `Enumerable` module in `ActiveRecord::Relation`
*Sean Griffin & bogdan*
* Use `Enumerable#sum` in `ActiveRecord::Relation` if a block is given.
*Sean Griffin*
* Let `WITH` queries (Common Table Expressions) be explainable.
*Vladimir Kochnev*
* Make `remove_index :table, :column` reversible.
*Yves Senn*
* Fixed an error which would occur in dirty checking when calling
`update_attributes` from a getter.
Fixes #20531.
*Sean Griffin*
* Make `remove_foreign_key` reversible. Any foreign key options must be
specified, similar to `remove_column`.
*Aster Ryan*
* Add `:_prefix` and `:_suffix` options to `enum` definition.
Fixes #17511, #17415.
*Igor Kapkov*
* Correctly handle decimal arrays with defaults in the schema dumper.
Fixes #20515.
*Sean Griffin & jmondo*
* Deprecate the PostgreSQL `:point` type in favor of a new one which will return
`Point` objects instead of an `Array`
*Sean Griffin*
* Ensure symbols passed to `ActiveRecord::Relation#select` are always treated
as columns.
Fixes #20360.
*Sean Griffin*
* Do not set `sql_mode` if `strict: :default` is specified.
# config/database.yml
production:
adapter: mysql2
database: foo_prod
user: foo
strict: :default
*Ryuta Kamizono*
* Allow proc defaults to be passed to the attributes API. See documentation
for examples.
*Sean Griffin*, *Kir Shatrov*
* SQLite: `:collation` support for string and text columns.
Example:
create_table :foo do |t|
t.string :string_nocase, collation: 'NOCASE'
t.text :text_rtrim, collation: 'RTRIM'
end
add_column :foo, :title, :string, collation: 'RTRIM'
change_column :foo, :title, :string, collation: 'NOCASE'
*Akshay Vishnoi*
* Allow the use of symbols or strings to specify enum values in test
fixtures:
awdr:
title: "Agile Web Development with Rails"
status: :proposed
*George Claghorn*
* Clear query cache when `ActiveRecord::Base#reload` is called.
*Shane Hender, Pierre Nespo*
* Include stored procedures and function on the MySQL structure dump.
*Jonathan Worek*
* Pass `:extend` option for `has_and_belongs_to_many` associations to the
underlying `has_many :through`.
*Jaehyun Shin*
* Deprecate `Relation#uniq` use `Relation#distinct` instead.
See #9683.
*Yves Senn*
* Allow single table inheritance instantiation to work when storing
demodulized class names.
*Alex Robbin*
* Correctly pass MySQL options when using `structure_dump` or
`structure_load`.
Specifically, it fixes an issue when using SSL authentication.
*Alex Coomans*
* Dump indexes in `create_table` instead of `add_index`.
If the adapter supports indexes in `create_table`, generated SQL is
slightly more efficient.
*Ryuta Kamizono*
* Correctly dump `:options` on `create_table` for MySQL.
*Ryuta Kamizono*
* PostgreSQL: `:collation` support for string and text columns.
Example:
create_table :foos do |t|
t.string :string_en, collation: 'en_US.UTF-8'
t.text :text_ja, collation: 'ja_JP.UTF-8'
end
*Ryuta Kamizono*
* Make `unscope` aware of "less than" and "greater than" conditions.
*TAKAHASHI Kazuaki*
* `find_by` and `find_by!` raise `ArgumentError` when called without
arguments.
*Kohei Suzuki*
* Revert behavior of `db:schema:load` back to loading the full
environment. This ensures that initializers are run.
Fixes #19545.
*Yves Senn*
* Fix missing index when using `timestamps` with the `index` option.
The `index` option used with `timestamps` should be passed to both
`column` definitions for `created_at` and `updated_at` rather than just
the first.
*Paul Mucur*
* Rename `:class` to `:anonymous_class` in association options.
Fixes #19659.
*Andrew White*
* Autosave existing records on a has many through association when the parent
is new.
Fixes #19782.
*Sean Griffin*
* Fixed a bug where uniqueness validations would error on out of range values,
even if an validation should have prevented it from hitting the database.
*Andrey Voronkov*
* MySQL: `:charset` and `:collation` support for string and text columns.
Example:
create_table :foos do |t|
t.string :string_utf8_bin, charset: 'utf8', collation: 'utf8_bin'
t.text :text_ascii, charset: 'ascii'
end
*Ryuta Kamizono*
* Foreign key related methods in the migration DSL respect
`ActiveRecord::Base.pluralize_table_names = false`.
Fixes #19643.
*Mehmet Emin İNAÇ*
* Reduce memory usage from loading types on PostgreSQL.
Fixes #19578.
*Sean Griffin*
* Add `config.active_record.warn_on_records_fetched_greater_than` option.
When set to an integer, a warning will be logged whenever a result set
larger than the specified size is returned by a query.
Fixes #16463.
*Jason Nochlin*
* Ignore `.psqlrc` when loading database structure.
*Jason Weathered*
* Fix referencing wrong table aliases while joining tables of has many through
association (only when calling calculation methods).
Fixes #19276.
*pinglamb*
* Correctly persist a serialized attribute that has been returned to
its default value by an in-place modification.
Fixes #19467.
*Matthew Draper*
* Fix generating the schema file when using PostgreSQL `BigInt[]` data type.
Previously the `limit: 8` was not coming through, and this caused it to
become `Int[]` data type after rebuilding from the schema.
Fixes #19420.
*Jake Waller*
* Reuse the `CollectionAssociation#reader` cache when the foreign key is
available prior to save.
*Ben Woosley*
* Add `config.active_record.dump_schemas` to fix `db:structure:dump`
when using schema_search_path and PostgreSQL extensions.
Fixes #17157.
*Ryan Wallace*
* Renaming `use_transactional_fixtures` to `use_transactional_tests` for clarity.
Fixes #18864.
*Brandon Weiss*
* Increase pg gem version requirement to `~> 0.18`. Earlier versions of the
pg gem are known to have problems with Ruby 2.2.
*Matt Brictson*
* Correctly dump `serial` and `bigserial`.
*Ryuta Kamizono*
* Fix default `format` value in `ActiveRecord::Tasks::DatabaseTasks#schema_file`.
*James Cox*
* Don't enroll records in the transaction if they don't have commit callbacks.
This was causing a memory leak when creating many records inside a transaction.
Fixes #15549.
*Will Bryant*, *Aaron Patterson*
* Correctly create through records when created on a has many through
association when using `where`.
Fixes #19073.
*Sean Griffin*
* Add `SchemaMigration.create_table` support for any unicode charsets with MySQL.
*Ryuta Kamizono*
* PostgreSQL no longer disables user triggers if system triggers can't be
disabled. Disabling user triggers does not fulfill what the method promises.
Rails currently requires superuser privileges for this method.
If you absolutely rely on this behavior, consider patching
`disable_referential_integrity`.
*Yves Senn*
* Restore aborted transaction state when `disable_referential_integrity` fails
due to missing permissions.
*Toby Ovod-Everett*, *Yves Senn*
* In PostgreSQL, print a warning message if `disable_referential_integrity`
fails due to missing permissions.
*Andrey Nering*, *Yves Senn*
* Allow a `:limit` option for MySQL bigint primary key support.
Example:
create_table :foos, id: :primary_key, limit: 8 do |t|
end
# or
create_table :foos, id: false do |t|
t.primary_key :id, limit: 8
end
*Ryuta Kamizono*
* `belongs_to` will now trigger a validation error by default if the association is not present.
You can turn this off on a per-association basis with `optional: true`.
(Note this new default only applies to new Rails apps that will be generated with
`config.active_record.belongs_to_required_by_default = true` in initializer.)
*Josef Šimánek*
* Fixed `ActiveRecord::Relation#becomes!` and `changed_attributes` issues for type
columns.
Fixes #17139.
*Miklos Fazekas*
* Format the time string according to the precision of the time column.
*Ryuta Kamizono*
* Allow a `:precision` option for time type columns.
*Ryuta Kamizono*
* Add `ActiveRecord::Base.suppress` to prevent the receiver from being saved
during the given block.
For example, here's a pattern of creating notifications when new comments
are posted. (The notification may in turn trigger an email, a push
notification, or just appear in the UI somewhere):
class Comment < ActiveRecord::Base
belongs_to :commentable, polymorphic: true
after_create -> { Notification.create! comment: self,
recipients: commentable.recipients }
end
That's what you want the bulk of the time. A new comment creates a new
Notification. There may be edge cases where you don't want that, like
when copying a commentable and its comments, in which case write a
concern with something like this:
module Copyable
def copy_to(destination)
Notification.suppress do
# Copy logic that creates new comments that we do not want triggering
# notifications.
end
end
end
*Michael Ryan*
* `:time` option added for `#touch`.
Fixes #18905.
*Hyonjee Joo*
* Deprecate passing of `start` value to `find_in_batches` and `find_each`
in favour of `begin_at` value.
*Vipul A M*
* Add `foreign_key_exists?` method.
*Tõnis Simo*
* Use SQL COUNT and LIMIT 1 queries for `none?` and `one?` methods
if no block or limit is given, instead of loading the entire
collection into memory. This applies to relations (e.g. `User.all`)
as well as associations (e.g. `account.users`)
# Before:
users.none?
# SELECT "users".* FROM "users"
users.one?
# SELECT "users".* FROM "users"
# After:
users.none?
# SELECT 1 AS one FROM "users" LIMIT 1
users.one?
# SELECT COUNT(*) FROM "users"
*Eugene Gilburg*
* Have `enum` perform type casting consistently with the rest of Active
Record, such as `where`.
*Sean Griffin*
* `scoping` no longer pollutes the current scope of sibling classes when using
STI. e.x.
StiOne.none.scoping do
StiTwo.all
end
Fixes #18806.
*Sean Griffin*
* `remove_reference` with `foreign_key: true` removes the foreign key before
removing the column. This fixes a bug where it was not possible to remove
the column on MySQL.
Fixes #18664.
*Yves Senn*
* `find_in_batches` now accepts an `:end_at` parameter that complements the `:start`
parameter to specify where to stop batch processing.
*Vipul A M*
* Fix a rounding problem for PostgreSQL timestamp columns.
If a timestamp column has a precision specified, it needs to
format according to that.
*Ryuta Kamizono*
* Respect the database default charset for `schema_migrations` table.
The charset of `version` column in `schema_migrations` table depends
on the database default charset and collation rather than the encoding
of the connection.
*Ryuta Kamizono*
* Raise `ArgumentError` when passing `nil` or `false` to `Relation#merge`.
These are not valid values to merge in a relation, so it should warn users
early.
*Rafael Mendonça França*
* Use `SCHEMA` instead of `DB_STRUCTURE` for specifying a structure file.
This makes the db:structure tasks consistent with test:load_structure.
*Dieter Komendera*
* Respect custom primary keys for associations when calling `Relation#where`
Fixes #18813.
*Sean Griffin*
* Fix several edge cases which could result in a counter cache updating
twice or not updating at all for `has_many` and `has_many :through`.
Fixes #10865.
*Sean Griffin*
* Foreign keys added by migrations were given random, generated names. This
meant a different `structure.sql` would be generated every time a developer
ran migrations on their machine.
The generated part of foreign key names is now a hash of the table name and
column name, which is consistent every time you run the migration.
*Chris Sinjakli*
* Validation errors would be raised for parent records when an association
was saved when the parent had `validate: false`. It should not be the
responsibility of the model to validate an associated object unless the
object was created or modified by the parent.
This fixes the issue by skipping validations if the parent record is
persisted, not changed, and not marked for destruction.
Fixes #17621.
*Eileen M. Uchitelle, Aaron Patterson*
* Fix n+1 query problem when eager loading nil associations (fixes #18312)
*Sammy Larbi*
* Change the default error message from `can't be blank` to `must exist` for
the presence validator of the `:required` option on `belongs_to`/`has_one`
associations.
*Henrik Nygren*
* Fixed `ActiveRecord::Relation#group` method when an argument is an SQL
reserved keyword:
Example:
SplitTest.group(:key).count
Property.group(:value).count
*Bogdan Gusiev*
* Added the `#or` method on `ActiveRecord::Relation`, allowing use of the OR
operator to combine WHERE or HAVING clauses.
Example:
Post.where('id = 1').or(Post.where('id = 2'))
# => SELECT * FROM posts WHERE (id = 1) OR (id = 2)
*Sean Griffin*, *Matthew Draper*, *Gael Muller*, *Olivier El Mekki*
* Don't define autosave association callbacks twice from
`accepts_nested_attributes_for`.
Fixes #18704.
*Sean Griffin*
* Integer types will no longer raise a `RangeError` when assigning an
attribute, but will instead raise when going to the database.
Fixes several vague issues which were never reported directly. See the
commit message from the commit which added this line for some examples.
*Sean Griffin*
* Values which would error while being sent to the database (such as an
ASCII-8BIT string with invalid UTF-8 bytes on SQLite3), no longer error on
assignment. They will still error when sent to the database, but you are
given the ability to re-assign it to a valid value.
Fixes #18580.
*Sean Griffin*
* Don't remove join dependencies in `Relation#exists?`
Fixes #18632.
*Sean Griffin*
* Invalid values assigned to a JSON column are assumed to be `nil`.
Fixes #18629.
*Sean Griffin*
* Add `ActiveRecord::Base#accessed_fields`, which can be used to quickly
discover which fields were read from a model when you are looking to only
select the data you need from the database.
*Sean Griffin*
* Introduce the `:if_exists` option for `drop_table`.
Example:
drop_table(:posts, if_exists: true)
That would execute:
DROP TABLE IF EXISTS posts
If the table doesn't exist, `if_exists: false` (the default) raises an
exception whereas `if_exists: true` does nothing.
*Cody Cutrer*, *Stefan Kanev*, *Ryuta Kamizono*
* Don't run SQL if attribute value is not changed for update_attribute method.
*Prathamesh Sonpatki*
* `time` columns can now get affected by `time_zone_aware_attributes`. If you have
set `config.time_zone` to a value other than `'UTC'`, they will be treated
as in that time zone by default in Rails 5.1. If this is not the desired
behavior, you can set
ActiveRecord::Base.time_zone_aware_types = [:datetime]
A deprecation warning will be emitted if you have a `:time` column, and have
not explicitly opted out.
Fixes #3145.
*Sean Griffin*
* Tests now run after_commit callbacks. You no longer have to declare
`uses_transaction ‘test name’` to test the results of an after_commit.
after_commit callbacks run after committing a transaction whose parent
is not `joinable?`: un-nested transactions, transactions within test cases,
and transactions in `console --sandbox`.
*arthurnn*, *Ravil Bayramgalin*, *Matthew Draper*
* `nil` as a value for a binary column in a query no longer logs as
"<NULL binary data>", and instead logs as just "nil".
*Sean Griffin*
* `attribute_will_change!` will no longer cause non-persistable attributes to
be sent to the database.
Fixes #18407.
*Sean Griffin*
* Remove support for the `protected_attributes` gem.
*Carlos Antonio da Silva*, *Roberto Miranda*
* Fix accessing of fixtures having non-string labels like Fixnum.
*Prathamesh Sonpatki*
* Remove deprecated support to preload instance-dependent associations.
*Yves Senn*
* Remove deprecated support for PostgreSQL ranges with exclusive lower bounds.
*Yves Senn*
* Remove deprecation when modifying a relation with cached Arel.
This raises an `ImmutableRelation` error instead.
*Yves Senn*
* Added `ActiveRecord::SecureToken` in order to encapsulate generation of
unique tokens for attributes in a model using `SecureRandom`.
*Roberto Miranda*
* Change the behavior of boolean columns to be closer to Ruby's semantics.
Before this change we had a small set of "truthy", and all others are "falsy".
Now, we have a small set of "falsy" values and all others are "truthy" matching
Ruby's semantics.
*Rafael Mendonça França*
* Deprecate `ActiveRecord::Base.errors_in_transactional_callbacks=`.
*Rafael Mendonça França*
* Change transaction callbacks to not swallow errors.
Before this change any errors raised inside a transaction callback
were getting rescued and printed in the logs.
Now these errors are not rescued anymore and just bubble up, as the other callbacks.
*Rafael Mendonça França*
* Remove deprecated `sanitize_sql_hash_for_conditions`.
*Rafael Mendonça França*
* Remove deprecated `Reflection#source_macro`.
*Rafael Mendonça França*
* Remove deprecated `symbolized_base_class` and `symbolized_sti_name`.
*Rafael Mendonça França*
* Remove deprecated `ActiveRecord::Base.disable_implicit_join_references=`.
*Rafael Mendonça França*
* Remove deprecated access to connection specification using a string accessor.
Now all strings will be handled as a URL.
*Rafael Mendonça França*
* Change the default `null` value for `timestamps` to `false`.
*Rafael Mendonça França*
* Return an array of pools from `connection_pools`.
*Rafael Mendonça França*
* Return a null column from `column_for_attribute` when no column exists.
*Rafael Mendonça França*
* Remove deprecated `serialized_attributes`.
*Rafael Mendonça França*
* Remove deprecated automatic counter caches on `has_many :through`.
*Rafael Mendonça França*
* Change the way in which callback chains can be halted.
The preferred method to halt a callback chain from now on is to explicitly
`throw(:abort)`.
In the past, returning `false` in an Active Record `before_` callback had the
side effect of halting the callback chain.
This is not recommended anymore and, depending on the value of the
`config.active_support.halt_callback_chains_on_return_false` option, will
either not work at all or display a deprecation warning.
*claudiob*
* Clear query cache on rollback.
*Florian Weingarten*
* Fix setting of foreign_key for through associations when building a new record.
Fixes #12698.
*Ivan Antropov*
* Improve dumping of the primary key. If it is not a default primary key,
correctly dump the type and options.
Fixes #14169, #16599.
*Ryuta Kamizono*
* Format the datetime string according to the precision of the datetime field.
Incompatible to rounding behavior between MySQL 5.6 and earlier.
In 5.5, when you insert `2014-08-17 12:30:00.999999` the fractional part
is ignored. In 5.6, it's rounded to `2014-08-17 12:30:01`:
http://bugs.mysql.com/bug.php?id=68760
*Ryuta Kamizono*
* Allow a precision option for MySQL datetimes.
*Ryuta Kamizono*
* Fixed automatic `inverse_of` for models nested in a module.
*Andrew McCloud*
* Change `ActiveRecord::Relation#update` behavior so that it can
be called without passing ids of the records to be updated.
This change allows updating multiple records returned by
`ActiveRecord::Relation` with callbacks and validations.
# Before
# ArgumentError: wrong number of arguments (1 for 2)
Comment.where(group: 'expert').update(body: "Group of Rails Experts")
# After
# Comments with group expert updated with body "Group of Rails Experts"
Comment.where(group: 'expert').update(body: "Group of Rails Experts")
*Prathamesh Sonpatki*
* Fix `reaping_frequency` option when the value is a string.
This usually happens when it is configured using `DATABASE_URL`.
*korbin*
* Fix error message when trying to create an associated record and the foreign
key is missing.
Before this fix the following exception was being raised:
NoMethodError: undefined method `val' for #<Arel::Nodes::BindParam:0x007fc64d19c218>
Now the message is:
ActiveRecord::UnknownAttributeError: unknown attribute 'foreign_key' for Model.
*Rafael Mendonça França*
* Fix change detection problem for PostgreSQL bytea type and
`ArgumentError: string contains null byte` exception with pg-0.18.
Fixes #17680.
*Lars Kanis*
* When a table has a composite primary key, the `primary_key` method for
SQLite3 and PostgreSQL adapters was only returning the first field of the key.
Ensures that it will return nil instead, as Active Record doesn't support
composite primary keys.
Fixes #18070.
*arthurnn*
* `validates_size_of` / `validates_length_of` do not count records
which are `marked_for_destruction?`.
Fixes #7247.
*Yves Senn*
* Ensure `first!` and friends work on loaded associations.
Fixes #18237.
*Sean Griffin*
* `eager_load` preserves readonly flag for associations.
Closes #15853.
*Takashi Kokubun*
* Provide `:touch` option to `save()` to accommodate saving without updating
timestamps.
Fixes #18202.
*Dan Olson*
* Provide a more helpful error message when an unsupported class is passed to
`serialize`.
Fixes #18224.
*Sean Griffin*
* Add bigint primary key support for MySQL.
Example:
create_table :foos, id: :bigint do |t|
end
*Ryuta Kamizono*
* Support for any type of primary key.
Fixes #14194.
*Ryuta Kamizono*
* Dump the default `nil` for PostgreSQL UUID primary key.
*Ryuta Kamizono*
* Add a `:foreign_key` option to `references` and associated migration
methods. The model and migration generators now use this option, rather than
the `add_foreign_key` form.
*Sean Griffin*
* Don't raise when writing an attribute with an out-of-range datetime passed
by the user.
*Grey Baker*
* Replace deprecated `ActiveRecord::Tasks::DatabaseTasks#load_schema` with
`ActiveRecord::Tasks::DatabaseTasks#load_schema_for`.
*Yves Senn*
* Fix bug with `ActiveRecord::Type::Numeric` that caused negative values to
be marked as having changed when set to the same negative value.
Closes #18161.
*Daniel Fox*
* Introduce `force: :cascade` option for `create_table`. Using this option
will recreate tables even if they have dependent objects (like foreign keys).
`db/schema.rb` now uses `force: :cascade`. This makes it possible to
reload the schema when foreign keys are in place.
*Matthew Draper*, *Yves Senn*
* `db:schema:load` and `db:structure:load` no longer purge the database
before loading the schema. This is left for the user to do.
`db:test:prepare` will still purge the database.
Closes #17945.
*Yves Senn*
* Fix undesirable RangeError by `Type::Integer`. Add `Type::UnsignedInteger`.
*Ryuta Kamizono*
* Add `foreign_type` option to `has_one` and `has_many` association macros.
This option enables to define the column name of associated object's type for polymorphic associations.
*Ulisses Almeida*, *Kassio Borges*
* Remove deprecated behavior allowing nested arrays to be passed as query
values.
*Melanie Gilman*
* Deprecate passing a class as a value in a query. Users should pass strings
instead.
*Melanie Gilman*
* `add_timestamps` and `remove_timestamps` now properly reversible with
options.
*Noam Gagliardi-Rabinovich*
* `ActiveRecord::ConnectionAdapters::ColumnDumper#column_spec` and
`ActiveRecord::ConnectionAdapters::ColumnDumper#prepare_column_options` no
longer have a `types` argument. They should access
`connection#native_database_types` directly.
*Yves Senn*
Please check [4-2-stable](https://github.com/rails/rails/blob/4-2-stable/activerecord/CHANGELOG.md) for previous changes.
|