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Diffstat (limited to 'activerecord/CHANGELOG.md')
-rw-r--r-- | activerecord/CHANGELOG.md | 512 |
1 files changed, 502 insertions, 10 deletions
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md index 3c4f06ccf8..fa2b7f0c0f 100644 --- a/activerecord/CHANGELOG.md +++ b/activerecord/CHANGELOG.md @@ -1,3 +1,488 @@ +* 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 key word: + + 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* @@ -10,7 +495,7 @@ *Yves Senn* -* Remove deprecation when modifying a relation with cached arel. +* Remove deprecation when modifying a relation with cached Arel. This raises an `ImmutableRelation` error instead. *Yves Senn* @@ -100,13 +585,13 @@ *Florian Weingarten* -* Fixed setting of foreign_key for through associations while building of new record. +* Fix setting of foreign_key for through associations when building a new record. Fixes #12698. *Ivan Antropov* -* Improve a dump of the primary key support. If it is not a default primary key, +* Improve dumping of the primary key. If it is not a default primary key, correctly dump the type and options. Fixes #14169, #16599. @@ -124,18 +609,18 @@ *Ryuta Kamizono* -* Allow precision option for MySQL datetimes. +* Allow a precision option for MySQL datetimes. *Ryuta Kamizono* -* Fixed automatic inverse_of for models nested in module. +* 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 to update multiple records returned by + This change allows updating multiple records returned by `ActiveRecord::Relation` with callbacks and validations. # Before @@ -167,6 +652,13 @@ *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 @@ -176,7 +668,7 @@ *arthurnn* -* `validates_size_of` / `validates_length_of` do not count records, +* `validates_size_of` / `validates_length_of` do not count records which are `marked_for_destruction?`. Fixes #7247. @@ -218,7 +710,7 @@ *Ryuta Kamizono* -* Support for any type primary key. +* Support for any type of primary key. Fixes #14194. @@ -244,7 +736,7 @@ *Yves Senn* -* Fixes bug with 'ActiveRecord::Type::Numeric' that causes negative values to +* 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. @@ -274,7 +766,7 @@ This option enables to define the column name of associated object's type for polymorphic associations. - *Ulisses Almeida, Kassio Borges* + *Ulisses Almeida*, *Kassio Borges* * Remove deprecated behavior allowing nested arrays to be passed as query values. |