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Diffstat (limited to 'activerecord/CHANGELOG.md')
| -rw-r--r-- | activerecord/CHANGELOG.md | 1339 |
1 files changed, 8 insertions, 1331 deletions
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md index a6ed8cdb06..298ee21e01 100644 --- a/activerecord/CHANGELOG.md +++ b/activerecord/CHANGELOG.md @@ -1,1336 +1,13 @@ -* Bring back `db:test:prepare` to synchronize the test database schema. +* `add_timestamps` and `remove_timestamps` now properly reversible with + options. - Manual synchronization using `bin/rake db:test:prepare` is required - when a migration is rolled-back, edited and reapplied. + *Noam Gagliardi-Rabinovich* - `ActiveRecord::Base.maintain_test_schema` now uses `db:test:prepare` - to synchronize the schema. Plugins can use this task as a hook to - provide custom behavior after the schema has been loaded. - - NOTE: `test:prepare` runs before the schema is synchronized. - - Fixes #17171, #15787. - - *Yves Senn* - -* Change `reflections` public api to return the keys as String objects. - - Fixes #16928. - - *arthurnn* - -* Renaming a table in pg also renames the primary key index. - - Fixes #12856 - - *Sean Griffin* - -* Make it possible to access fixtures excluded by a `default_scope`. - - *Yves Senn* - -* Fix preloading of associations with a scope containing joins along with - conditions on the joined association. - - *Siddharth Sharma* - -* Add `Table#name` to match `TableDefinition#name`. - - *Cody Cutrer* - -* Cache `CollectionAssociation#reader` proxies separately before and after - the owner has been saved so that the proxy is not cached without the - owner's id. - - *Ben Woosley* - -* `ActiveRecord::ReadOnlyRecord` now has a descriptive message. - - *Franky W.* - -* 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 a 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* - -* Fix 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* - -* Fix `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* - -* Fix 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* - -* Fix 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* - -* Fix an error in `reset_counters` when associations have `select` scope. - (Call to `count` generated 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* - -* Fix `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* - -* Fix 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* - -* Fix serialized fields returning serialized data after being updated with - `update_column`. - - *Simon Hørup Eskildsen* - -* Fix 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* - -* Fix the inferred table name of a `has_and_belongs_to_many` auxiliary - 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* - -* Fix `has_and_belongs_to_many` CollectionAssociation size calculations. - - `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* - -* Fix 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* - -* Enable `has_many` associations to support irregular inflections. - - Fixes #8928. - - *arthurnn*, *Javier Goizueta* - -* Fix `count` used with a grouping 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* - -* Fix invalid SQL when aggregate methods (`empty?`, `any?`, `count`) used - with `select`. - - 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* - -* Fix 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* - -* Fix 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* - -* Fix error when specifying a non-empty default value on a PostgreSQL array - column. - - Fixes #10613. - - *Luke Steensen* - -* Fix error where `.persisted?` throws SystemStackError for an unsaved model with a - custom primary key that did not 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 PostgreSQL `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* - -* Fix 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. - -* Fix 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. +* `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 [4-1-stable](https://github.com/rails/rails/blob/4-1-stable/activerecord/CHANGELOG.md) for previous changes. +Please check [4-2-stable](https://github.com/rails/rails/blob/4-2-stable/activerecord/CHANGELOG.md) for previous changes. |