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Diffstat (limited to 'activerecord/CHANGELOG.md')
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diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md index c7928e503b..16f3f47d29 100644 --- a/activerecord/CHANGELOG.md +++ b/activerecord/CHANGELOG.md @@ -1,653 +1,524 @@ -* Fix PredicateBuilder so polymorhic association keys in `where` clause can - also accept not only `ActiveRecord::Base` direct descendances (decorated - models, for example). +* Allow `:precision` option for time type columns. - *Mikhail Dieterle* + *Ryuta Kamizono* -* PostgreSQL adapter recognizes negative money values formatted with - parentheses (eg. `($1.25) # => -1.25`)). - Fixes #11899. +* Have `enum` perform type casting consistently with the rest of Active + Record, such as `where`. - *Yves Senn* - -* Stop interpreting SQL 'string' columns as :string type because there is no - common STRING datatype in SQL. - - *Ben Woosley* - -* `ActiveRecord::FinderMethods#exists?` returns `true`/`false` in all cases. - - *Xavier Noria* - -* Assign inet/cidr attribute with `nil` value for invalid address. - - Example: - - record = User.new - record.logged_in_from_ip # is type of an inet or a cidr - - # Before: - record.logged_in_from_ip = 'bad ip address' # raise exception - - # After: - record.logged_in_from_ip = 'bad ip address' # do not raise exception - record.logged_in_from_ip # => nil - record.logged_in_from_ip_before_type_cast # => 'bad ip address' - - *Paul Nikitochkin* - -* `add_to_target` now accepts a second optional `skip_callbacks` argument - - If truthy, it will skip the :before_add and :after_add callbacks. - - *Ben Woosley* - -* Fix interactions between `:before_add` callbacks and nested attributes - assignment of `has_many` associations, when the association was not - yet loaded: - - - A `:before_add` callback was being called when a nested attributes - assignment assigned to an existing record. - - - Nested Attributes assignment did not affect the record in the - association target when a `:before_add` callback triggered the - loading of the association - - *Jörg Schray* - -* Allow enable_extension migration method to be revertible. + *Sean Griffin* - *Eric Tipton* +* `scoping` no longer pollutes the current scope of sibling classes when using + STI. e.x. -* Type cast hstore values on write, so that the value is consistent - with reading from the database. - - Example: - - x = Hstore.new tags: {"bool" => true, "number" => 5} + StiOne.none.scoping do + StiTwo.all + end - # Before: - x.tags # => {"bool" => true, "number" => 5} + Fixes #18806. - # After: - x.tags # => {"bool" => "true", "number" => "5"} + *Sean Griffin* - *Yves Senn* , *Severin Schoepke* +* `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. -* Fix multidimensional PG arrays containing non-string items. + Fixes #18664. *Yves Senn* -* Load fixtures from linked folders. - - *Kassio Borges* +* `find_in_batches` now accepts an `:end_at` parameter that complements the `:start` + parameter to specify where to stop batch processing. -* Create a directory for sqlite3 file if not present on the system. + *Vipul A M* - *Richard Schneeman* +* Fix rounding problem for PostgreSQL timestamp column. -* Removed redundant override of `xml` column definition for PG, - in order to use `xml` column type instead of `text`. + If timestamp column have the precision, it need to format according to + the precision of timestamp column. - *Paul Nikitochkin*, *Michael Nikitochkin* + *Ryuta Kamizono* -* Revert `ActiveRecord::Relation#order` change that make new order - prepend the old one. +* Respect the database default charset for `schema_migrations` table. - Before: + The charset of `version` column in `schema_migrations` table is depend + on the database default charset and collation rather than the encoding + of the connection. - User.order("name asc").order("created_at desc") - # SELECT * FROM users ORDER BY created_at desc, name asc + *Ryuta Kamizono* - After: +* Raise `ArgumentError` when passing `nil` or `false` to `Relation#merge`. - User.order("name asc").order("created_at desc") - # SELECT * FROM users ORDER BY name asc, created_at desc + These are not valid values to merge in a relation so it should warn the users + early. - This also affects order defined in `default_scope` or any kind of associations. + *Rafael Mendonça França* -* Add ability to define how a class is converted to Arel predicates. - For example, adding a very vendor specific regex implementation: +* Use `SCHEMA` instead of `DB_STRUCTURE` for specifying structure file. - regex_handler = proc do |column, value| - Arel::Nodes::InfixOperation.new('~', column, value.source) - end - ActiveRecord::PredicateBuilder.register_handler(Regexp, regex_handler) + This makes the db:structure tasks consistent with test:load_structure. - *Sean Griffin & @joannecheng* + *Dieter Komendera* -* Don't allow `quote_value` to be called without a column. +* Respect custom primary keys for associations when calling `Relation#where` - Some adapters require column information to do their job properly. - By enforcing the provision of the column for this internal method - we ensure that those using adapters that require column information - will always get the proper behavior. + Fixes #18813. - *Ben Woosley* + *Sean Griffin* -* When using optimistic locking, `update` was not passing the column to `quote_value` - to allow the connection adapter to properly determine how to quote the value. This was - affecting certain databases that use specific column types. +* Fixed 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: #6763 + Fixes #10865. - *Alfred Wong* + *Sean Griffin* -* rescue from all exceptions in `ConnectionManagement#call` +* 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. - Fixes #11497 + 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. - As `ActiveRecord::ConnectionAdapters::ConnectionManagement` middleware does - not rescue from Exception (but only from StandardError), the Connection - Pool quickly runs out of connections when multiple erroneous Requests come - in right after each other. + *Chris Sinjakli* - Rescuing from all exceptions and not just StandardError, fixes this - behaviour. +* 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. - *Vipul A M* + This fixes the issue by skipping validations if the parent record is + persisted, not changed, and not marked for destruction. -* `change_column` for PostgreSQL adapter respects the `:array` option. - - *Yves Senn* + Fixes #17621. -* Remove deprecation warning from `attribute_missing` for attributes that are columns. + *Eileen M. Uchitelle, Aaron Patterson* - *Arun Agrawal* +* Fix n+1 query problem when eager loading nil associations (fixes #18312) -* Remove extra decrement of transaction deep level. + *Sammy Larbi* - Fixes: #4566 +* 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. - *Paul Nikitochkin* + *Henrik Nygren* -* Reset @column_defaults when assigning `locking_column`. - We had a potential problem. For example: +* Fixed ActiveRecord::Relation#group method when argument is SQL reserved key word: - class Post < ActiveRecord::Base - self.column_defaults # if we call this unintentionally before setting locking_column ... - self.locking_column = 'my_locking_column' - end - - Post.column_defaults["my_locking_column"] - => nil # expected value is 0 ! - - *kennyj* - -* Remove extra select and update queries on save/touch/destroy ActiveRecord model - with belongs to reflection with option `touch: true`. + Example: - Fixes: #11288 + SplitTest.group(:key).count + Property.group(:value).count - *Paul Nikitochkin* + *Bogdan Gusiev* -* Remove deprecated nil-passing to the following `SchemaCache` methods: - `primary_keys`, `tables`, `columns` and `columns_hash`. +* Added the `#or` method on ActiveRecord::Relation, allowing use of the OR + operator to combine WHERE or HAVING clauses. - *Yves Senn* + Example: -* Remove deprecated block filter from `ActiveRecord::Migrator#migrate`. + Post.where('id = 1').or(Post.where('id = 2')) + # => SELECT * FROM posts WHERE (id = 1) OR (id = 2) - *Yves Senn* + *Sean Griffin*, *Matthew Draper*, *Gael Muller*, *Olivier El Mekki* -* Remove deprecated String constructor from `ActiveRecord::Migrator`. +* Don't define autosave association callbacks twice from + `accepts_nested_attributes_for`. - *Yves Senn* + Fixes #18704. -* Remove deprecated `scope` use without passing a callable object. + *Sean Griffin* - *Arun Agrawal* +* Integer types will no longer raise a `RangeError` when assigning an + attribute, but will instead raise when going to the database. -* Remove deprecated `transaction_joinable=` in favor of `begin_transaction` - with `:joinable` option. + Fixes several vague issues which were never reported directly. See the + commit message from the commit which added this line for some examples. - *Arun Agrawal* + *Sean Griffin* -* Remove deprecated `decrement_open_transactions`. +* 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. - *Arun Agrawal* + Fixes #18580. -* Remove deprecated `increment_open_transactions`. + *Sean Griffin* - *Arun Agrawal* +* Don't remove join dependencies in `Relation#exists?` -* Remove deprecated `PostgreSQLAdapter#outside_transaction?` - method. You can use `#transaction_open?` instead. + Fixes #18632. - *Yves Senn* + *Sean Griffin* -* Remove deprecated `ActiveRecord::Fixtures.find_table_name` in favor of - `ActiveRecord::Fixtures.default_fixture_model_name`. +* Invalid values assigned to a JSON column are assumed to be `nil`. - *Vipul A M* + Fixes #18629. -* Removed deprecated `columns_for_remove` from `SchemaStatements`. + *Sean Griffin* - *Neeraj Singh* +* 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. -* Remove deprecated `SchemaStatements#distinct`. + *Sean Griffin* - *Francesco Rodriguez* +* Introduce the `:if_exists` option for `drop_table`. -* Move deprecated `ActiveRecord::TestCase` into the rails test - suite. The class is no longer public and is only used for internal - Rails tests. + Example: - *Yves Senn* + drop_table(:posts, if_exists: true) -* Removed support for deprecated option `:restrict` for `:dependent` - in associations. + That would execute: - *Neeraj Singh* + DROP TABLE IF EXISTS posts -* Removed support for deprecated `delete_sql` in associations. + If the table doesn't exist, `if_exists: false` (the default) raises an + exception whereas `if_exists: true` does nothing. - *Neeraj Singh* + *Cody Cutrer*, *Stefan Kanev*, *Ryuta Kamizono* -* Removed support for deprecated `insert_sql` in associations. +* Don't run SQL if attribute value is not changed for update_attribute method. - *Neeraj Singh* + *Prathamesh Sonpatki* -* Removed support for deprecated `finder_sql` in associations. +* `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 - *Neeraj Singh* + ActiveRecord::Base.time_zone_aware_types = [:datetime] -* Support array as root element in JSON fields. + A deprecation warning will be emitted if you have a `:time` column, and have + not explicitly opted out. - *Alexey Noskov & Francesco Rodriguez* + Fixes #3145. -* Removed support for deprecated `counter_sql` in associations. + *Sean Griffin* - *Neeraj Singh* +* Tests now run after_commit callbacks. You no longer have to declare + `uses_transaction ‘test name’` to test the results of an after_commit. -* Do not invoke callbacks when `delete_all` is called on collection. + 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`. - Method `delete_all` should not be invoking callbacks and this - feature was deprecated in Rails 4.0. This is being removed. - `delete_all` will continue to honor the `:dependent` option. However - if `:dependent` value is `:destroy` then the default deletion - strategy for that collection will be applied. + *arthurnn*, *Ravil Bayramgalin*, *Matthew Draper* - User can also force a deletion strategy by passing parameter to - `delete_all`. For example you can do `@post.comments.delete_all(:nullify)` . +* `nil` as a value for a binary column in a query no longer logs as + "<NULL binary data>", and instead logs as just "nil". - *Neeraj Singh* + *Sean Griffin* -* Calling default_scope without a proc will now raise `ArgumentError`. +* `attribute_will_change!` will no longer cause non-persistable attributes to + be sent to the database. - *Neeraj Singh* + Fixes #18407. -* Removed deprecated method `type_cast_code` from Column. + *Sean Griffin* - *Neeraj Singh* +* Remove support for the `protected_attributes` gem. -* Removed deprecated options `delete_sql` and `insert_sql` from HABTM - association. + *Carlos Antonio da Silva*, *Roberto Miranda* - Removed deprecated options `finder_sql` and `counter_sql` from - collection association. +* Fix accessing of fixtures having non-string labels like Fixnum. - *Neeraj Singh* + *Prathamesh Sonpatki* -* Remove deprecated `ActiveRecord::Base#connection` method. - Make sure to access it via the class. +* Remove deprecated support to preload instance-dependent associations. *Yves Senn* -* Remove deprecation warning for `auto_explain_threshold_in_seconds`. +* Remove deprecated support for PostgreSQL ranges with exclusive lower bounds. *Yves Senn* -* Remove deprecated `:distinct` option from `Relation#count`. +* Remove deprecation when modifying a relation with cached arel. + This raises an `ImmutableRelation` error instead. *Yves Senn* -* Removed deprecated methods `partial_updates`, `partial_updates?` and - `partial_updates=`. +* Added `ActiveRecord::SecureToken` in order to encapsulate generation of + unique tokens for attributes in a model using `SecureRandom`. - *Neeraj Singh* + *Roberto Miranda* -* Removed deprecated method `scoped` +* Change the behavior of boolean columns to be closer to Ruby's semantics. - *Neeraj Singh* + Before this change we had a small set of "truthy", and all others are "falsy". -* Removed deprecated method `default_scopes?` + Now, we have a small set of "falsy" values and all others are "truthy" matching + Ruby's semantics. - *Neeraj Singh* + *Rafael Mendonça França* -* Remove implicit join references that were deprecated in 4.0. +* Deprecate `ActiveRecord::Base.errors_in_transactional_callbacks=`. - Example: + *Rafael Mendonça França* - # before with implicit joins - Comment.where('posts.author_id' => 7) +* Change transaction callbacks to not swallow errors. - # after - Comment.references(:posts).where('posts.author_id' => 7) + Before this change any errors raised inside a transaction callback + were getting rescued and printed in the logs. - *Yves Senn* + Now these errors are not rescued anymore and just bubble up, as the other callbacks. -* Apply default scope when joining associations. For example: + *Rafael Mendonça França* - class Post < ActiveRecord::Base - default_scope -> { where published: true } - end +* Remove deprecated `sanitize_sql_hash_for_conditions`. - class Comment - belongs_to :post - end + *Rafael Mendonça França* - When calling `Comment.joins(:post)`, we expect to receive only - comments on published posts, since that is the default scope for - posts. +* Remove deprecated `Reflection#source_macro`. - Before this change, the default scope from `Post` was not applied, - so we'd get comments on unpublished posts. + *Rafael Mendonça França* - *Jon Leighton* +* Remove deprecated `symbolized_base_class` and `symbolized_sti_name`. -* Remove `activerecord-deprecated_finders` as a dependency + *Rafael Mendonça França* - *Łukasz Strzałkowski* +* Remove deprecated `ActiveRecord::Base.disable_implicit_join_references=`. -* Remove Oracle / Sqlserver / Firebird database tasks that were deprecated in 4.0. + *Rafael Mendonça França* - *kennyj* +* Remove deprecated access to connection specification using a string accessor. -* `find_each` now returns an `Enumerator` when called without a block, so that it - can be chained with other `Enumerable` methods. + Now all strings will be handled as a URL. - *Ben Woosley* + *Rafael Mendonça França* -* `ActiveRecord::Result.each` now returns an `Enumerator` when called without - a block, so that it can be chained with other `Enumerable` methods. +* Change the default `null` value for `timestamps` to `false`. - *Ben Woosley* + *Rafael Mendonça França* -* Flatten merged join_values before building the joins. +* Return an array of pools from `connection_pools`. - While joining_values special treatment is given to string values. - By flattening the array it ensures that string values are detected - as strings and not arrays. + *Rafael Mendonça França* - Fixes #10669. +* Return a null column from `column_for_attribute` when no column exists. - *Neeraj Singh and iwiznia* + *Rafael Mendonça França* -* Do not load all child records for inverse case. +* Remove deprecated `serialized_attributes`. - currently `post.comments.find(Comment.first.id)` would load all - comments for the given post to set the inverse association. + *Rafael Mendonça França* - This has a huge performance penalty. Because if post has 100k - records and all these 100k records would be loaded in memory - even though the comment id was supplied. +* Remove deprecated automatic counter caches on `has_many :through`. - Fix is to use in-memory records only if loaded? is true. Otherwise - load the records using full sql. + *Rafael Mendonça França* - Fixes #10509. +* Change the way in which callback chains can be halted. - *Neeraj Singh* + The preferred method to halt a callback chain from now on is to explicitly + `throw(:abort)`. + In the past, returning `false` in an ActiveRecord `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. -* `inspect` on Active Record model classes does not initiate a - new connection. This means that calling `inspect`, when the - database is missing, will no longer raise an exception. - Fixes #10936. + *claudiob* - Example: +* Clear query cache on rollback. - Author.inspect # => "Author(no database connection)" + *Florian Weingarten* - *Yves Senn* +* Fixed setting of foreign_key for through associations while building of new record. -* Handle single quotes in PostgreSQL default column values. - Fixes #10881. + Fixes #12698. - *Dylan Markow* + *Ivan Antropov* -* Log the sql that is actually sent to the database. +* Improve a dump of the primary key support. If it is not a default primary key, + correctly dump the type and options. - If I have a query that produces sql - `WHERE "users"."name" = 'a b'` then in the log all the - whitespace is being squeezed. So the sql that is printed in the - log is `WHERE "users"."name" = 'a b'`. + Fixes #14169, #16599. - Do not squeeze whitespace out of sql queries. Fixes #10982. + *Ryuta Kamizono* - *Neeraj Singh* +* Format the datetime string according to the precision of the datetime field. -* Fixture setup does no longer depend on `ActiveRecord::Base.configurations`. - This is relevant when `ENV["DATABASE_URL"]` is used in place of a `database.yml`. + Incompatible to rounding behavior between MySQL 5.6 and earlier. - *Yves Senn* + 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`: -* Fix mysql2 adapter raises the correct exception when executing a query on a - closed connection. + http://bugs.mysql.com/bug.php?id=68760 - *Yves Senn* + *Ryuta Kamizono* -* Ambiguous reflections are on :through relationships are no longer supported. - For example, you need to change this: +* Allow precision option for MySQL datetimes. - class Author < ActiveRecord::Base - has_many :posts - has_many :taggings, :through => :posts - end + *Ryuta Kamizono* - class Post < ActiveRecord::Base - has_one :tagging - has_many :taggings - end +* Fixed automatic inverse_of for models nested in module. - class Tagging < ActiveRecord::Base - end + *Andrew McCloud* - To this: +* Change `ActiveRecord::Relation#update` behavior so that it can + be called without passing ids of the records to be updated. - class Author < ActiveRecord::Base - has_many :posts - has_many :taggings, :through => :posts, :source => :tagging - end + This change allows to update multiple records returned by + `ActiveRecord::Relation` with callbacks and validations. - class Post < ActiveRecord::Base - has_one :tagging - has_many :taggings - end + # Before + # ArgumentError: wrong number of arguments (1 for 2) + Comment.where(group: 'expert').update(body: "Group of Rails Experts") - class Tagging < ActiveRecord::Base - end + # After + # Comments with group expert updated with body "Group of Rails Experts" + Comment.where(group: 'expert').update(body: "Group of Rails Experts") - *Aaron Patterson* + *Prathamesh Sonpatki* -* Remove column restrictions for `count`, let the database raise if the SQL is - invalid. The previous behavior was untested and surprising for the user. - Fixes #5554. +* Fix `reaping_frequency` option when the value is a string. - Example: + This usually happens when it is configured using `DATABASE_URL`. - User.select("name, username").count - # Before => SELECT count(*) FROM users - # After => ActiveRecord::StatementInvalid + *korbin* - # you can still use `count(:all)` to perform a query unrelated to the - # selected columns - User.select("name, username").count(:all) # => SELECT count(*) FROM users +* Fix error message when trying to create an associated record and the foreign + key is missing. - *Yves Senn* + Before this fix the following exception was being raised: -* Rails now automatically detects inverse associations. If you do not set the - `:inverse_of` option on the association, then Active Record will guess the - inverse association based on heuristics. + NoMethodError: undefined method `val' for #<Arel::Nodes::BindParam:0x007fc64d19c218> - Note that automatic inverse detection only works on `has_many`, `has_one`, - and `belongs_to` associations. Extra options on the associations will - also prevent the association's inverse from being found automatically. + Now the message is: - The automatic guessing of the inverse association uses a heuristic based - on the name of the class, so it may not work for all associations, - especially the ones with non-standard names. + ActiveRecord::UnknownAttributeError: unknown attribute 'foreign_key' for Model. - You can turn off the automatic detection of inverse associations by setting - the `:inverse_of` option to `false` like so: + *Rafael Mendonça França* - class Taggable < ActiveRecord::Base - belongs_to :tag, inverse_of: false - end - - *John Wang* - -* Fix `add_column` with `array` option when using PostgreSQL. Fixes #10432 - - *Adam Anderson* - -* Usage of `implicit_readonly` is being removed`. Please use `readonly` method - explicitly to mark records as `readonly. - Fixes #10615. +* 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. - Example: + Fixes #18070. - user = User.joins(:todos).select("users.*, todos.title as todos_title").readonly(true).first - user.todos_title = 'clean pet' - user.save! # will raise error + *arthurnn* - *Yves Senn* +* `validates_size_of` / `validates_length_of` do not count records, + which are `marked_for_destruction?`. -* Fix the `:primary_key` option for `has_many` associations. - Fixes #10693. + Fixes #7247. *Yves Senn* -* Fix bug where tiny types are incorrectly coerced as boolean when the length is more than 1. - - Fixes #10620. - - *Aaron Patterson* - -* Also support extensions in PostgreSQL 9.1. This feature has been supported since 9.1. +* Ensure `first!` and friends work on loaded associations. - *kennyj* + Fixes #18237. -* Deprecate `ConnectionAdapters::SchemaStatements#distinct`, - as it is no longer used by internals. + *Sean Griffin* - *Ben Woosley* +* `eager_load` preserves readonly flag for associations. -* Fix pending migrations error when loading schema and `ActiveRecord::Base.table_name_prefix` - is not blank. + Closes #15853. - Call `assume_migrated_upto_version` on connection to prevent it from first - being picked up in `method_missing`. + *Takashi Kokubun* - In the base class, `Migration`, `method_missing` expects the argument to be a - table name, and calls `proper_table_name` on the arguments before sending to - `connection`. If `table_name_prefix` or `table_name_suffix` is used, the schema - version changes to `prefix_version_suffix`, breaking `rake test:prepare`. +* Provide `:touch` option to `save()` to accommodate saving without updating + timestamps. - Fixes #10411. + Fixes #18202. - *Kyle Stevens* + *Dan Olson* -* Method `read_attribute_before_type_cast` should accept input as symbol. +* Provide a more helpful error message when an unsupported class is passed to + `serialize`. - *Neeraj Singh* + Fixes #18224. -* Confirm a record has not already been destroyed before decrementing counter cache. + *Sean Griffin* - *Ben Tucker* +* Add bigint primary key support for MySQL. -* Fixed a bug in `ActiveRecord#sanitize_sql_hash_for_conditions` in which - `self.class` is an argument to `PredicateBuilder#build_from_hash` - causing `PredicateBuilder` to call non-existent method - `Class#reflect_on_association`. + Example: - *Zach Ohlgren* + create_table :foos, id: :bigint do |t| + end -* While removing index if column option is missing then raise IrreversibleMigration exception. + *Ryuta Kamizono* - Following code should raise `IrreversibleMigration`. But the code was - failing since options is an array and not a hash. +* Support for any type primary key. - def change - change_table :users do |t| - t.remove_index [:name, :email] - end - end + Fixes #14194. - Fix was to check if the options is a Hash before operating on it. + *Ryuta Kamizono* - Fixes #10419. +* Dump the default `nil` for PostgreSQL UUID primary key. - *Neeraj Singh* + *Ryuta Kamizono* -* Do not overwrite manually built records during one-to-one nested attribute assignment +* 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. - For one-to-one nested associations, if you build the new (in-memory) - child object yourself before assignment, then the NestedAttributes - module will not overwrite it, e.g.: + *Sean Griffin* - class Member < ActiveRecord::Base - has_one :avatar - accepts_nested_attributes_for :avatar - - def avatar - super || build_avatar(width: 200) - end - end +* Don't raise when writing an attribute with an out-of-range datetime passed + by the user. - member = Member.new - member.avatar_attributes = {icon: 'sad'} - member.avatar.width # => 200 + *Grey Baker* - *Olek Janiszewski* +* Replace deprecated `ActiveRecord::Tasks::DatabaseTasks#load_schema` with + `ActiveRecord::Tasks::DatabaseTasks#load_schema_for`. -* fixes bug introduced by #3329. Now, when autosaving associations, - deletions happen before inserts and saves. This prevents a 'duplicate - unique value' database error that would occur if a record being created had - the same value on a unique indexed field as that of a record being destroyed. + *Yves Senn* - *Johnny Holton* +* Fixes bug with 'ActiveRecord::Type::Numeric' that causes negative values to + be marked as having changed when set to the same negative value. -* Handle aliased attributes in ActiveRecord::Relation. + Closes #18161. - When using symbol keys, ActiveRecord will now translate aliased attribute names to the actual column name used in the database: + *Daniel Fox* - With the model +* 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. - class Topic - alias_attribute :heading, :title - end + *Matthew Draper*, *Yves Senn* - The call +* `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. - Topic.where(heading: 'The First Topic') + Closes #17945. - should yield the same result as + *Yves Senn* - Topic.where(title: 'The First Topic') +* Fix undesirable RangeError by `Type::Integer`. Add `Type::UnsignedInteger`. - This also applies to ActiveRecord::Relation::Calculations calls such as `Model.sum(:aliased)` and `Model.pluck(:aliased)`. + *Ryuta Kamizono* - This will not work with SQL fragment strings like `Model.sum('DISTINCT aliased')`. +* Add `foreign_type` option to `has_one` and `has_many` association macros. - *Godfrey Chan* + This option enables to define the column name of associated object's type for polymorphic associations. -* Mute `psql` output when running rake db:schema:load. + *Ulisses Almeida*, *Kassio Borges* - *Godfrey Chan* +* Remove deprecated behavior allowing nested arrays to be passed as query + values. -* Trigger a save on `has_one association=(associate)` when the associate contents have changed. + *Melanie Gilman* - Fix #8856. +* Deprecate passing a class as a value in a query. Users should pass strings + instead. - *Chris Thompson* + *Melanie Gilman* -* Abort a rake task when missing db/structure.sql like `db:schema:load` task. +* `add_timestamps` and `remove_timestamps` now properly reversible with + options. - *kennyj* + *Noam Gagliardi-Rabinovich* -* rake:db:test:prepare falls back to original environment after execution. +* `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. - *Slava Markevich* + *Yves Senn* -Please check [4-0-stable](https://github.com/rails/rails/blob/4-0-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. |