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Diffstat (limited to 'activerecord/CHANGELOG.md')
-rw-r--r-- | activerecord/CHANGELOG.md | 167 |
1 files changed, 160 insertions, 7 deletions
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md index 861f2c3c36..16ce131cf4 100644 --- a/activerecord/CHANGELOG.md +++ b/activerecord/CHANGELOG.md @@ -1,3 +1,140 @@ +* SQLite: Fix uniqueness validation when values exceed the column limit. + + SQLite doesn't impose length restrictions on strings, BLOBs, or numeric + values. It treats them as helpful metadata. When we truncate strings + before checking uniqueness, we'd miss values that exceed the column limit. + + Other databases enforce length limits. A large value will pass uniqueness + validation since the column limit guarantees no value that long exists. + When we insert the row, it'll raise `ActiveRecord::ValueTooLong` as we + expect. + + This fixes edge-case incorrect validation failures for values that exceed + the column limit but are identical to an existing value *when truncated*. + Now these will pass validation and raise an exception. + + *Ryuta Kamizono* + +* Raise `ActiveRecord::ValueTooLong` when column limits are exceeded. + Supported by MySQL and PostgreSQL adapters. + + *Ryuta Kamizono* + +* Migrations: `#foreign_key` respects `table_name_prefix` and `_suffix`. + + *Ryuta Kamizono* + +* SQLite: Force NOT NULL primary keys. + + From SQLite docs: https://www.sqlite.org/lang_createtable.html + According to the SQL standard, PRIMARY KEY should always imply NOT + NULL. Unfortunately, due to a bug in some early versions, this is not + the case in SQLite. Unless the column is an INTEGER PRIMARY KEY or the + table is a WITHOUT ROWID table or the column is declared NOT NULL, + SQLite allows NULL values in a PRIMARY KEY column. SQLite could be + fixed to conform to the standard, but doing so might break legacy + applications. Hence, it has been decided to merely document the fact + that SQLite allowing NULLs in most PRIMARY KEY columns. + + Now we override column options to explicitly set NOT NULL rather than rely + on implicit NOT NULL like MySQL and PostgreSQL adapters. + + *Ryuta Kamizono* + +* Added notice when a database is successfully created or dropped. + + Example: + + $ bin/rails db:create + Created database 'blog_development' + Created database 'blog_test' + + $ bin/rails db:drop + Dropped database 'blog_development' + Dropped database 'blog_test' + + Changed older notices + `blog_development already exists` to `Database 'blog_development' already exists`. + and + `Couldn't drop blog_development` to `Couldn't drop database 'blog_development'`. + + *bogdanvlviv* + +* Database comments. Annotate database objects (tables, columns, indexes) + with comments stored in database metadata. PostgreSQL & MySQL support. + + create_table :pages, force: :cascade, comment: 'CMS content pages' do |t| + t.string :path, comment: 'Path fragment of page URL used for routing' + t.string :locale, comment: 'RFC 3066 locale code of website language section' + t.index [:path, :locale], comment: 'Look up pages by URI' + end + + *Andrey Novikov* + +* Add `quoted_time` for truncating the date part of a TIME column value. + This fixes queries on TIME column on MariaDB, as it doesn't ignore the + date part of the string when it coerces to time. + + *Ryuta Kamizono* + +* Properly accept all valid JSON primitives in the JSON data type. + + Fixes #24234 + + *Sean Griffin* + +* MariaDB 5.3+ supports microsecond datetime precision. + + *Jeremy Daer* + +* Delegate `empty?`, `none?` and `one?`. Now they can be invoked as model class methods. + + Example: + + # When no record is found on the table + Topic.empty? # => true + Topic.none? # => true + + # When only one record is found on the table + Topic.one? # => true + + *Kenta Shirai* + +* The form builder now properly displays values when passing a proc form + default to the attributes API. + + Fixes #24249. + + *Sean Griffin* + +* The schema cache is now cleared after the `db:migrate` task is run. + + Closes #24273. + + *Chris Arcand* + +* MySQL: strict mode respects other SQL modes rather than overwriting them. + Setting `strict: true` adds `STRICT_ALL_TABLES` to `sql_mode`. Setting + `strict: false` removes `STRICT_TRANS_TABLES`, `STRICT_ALL_TABLES`, and + `TRADITIONAL` from `sql_mode`. + + *Ryuta Kamizono* + +* Execute default_scope defined by abstract class in the context of subclass. + + Fixes #23413. + Fixes #10658. + + *Mehmet Emin İNAÇ* + +* Fix an issue when preloading associations with extensions. + Previously every association with extension methods was transformed into an + instance dependent scope. This is no longer the case. + + Fixes #23934. + + *Yves Senn* + * Deprecate `{insert|update|delete}_sql` in `DatabaseStatements`. Use the `{insert|update|delete}` public methods instead. @@ -33,6 +170,12 @@ ## Rails 5.0.0.beta3 (February 24, 2016) ## +* Save many-to-many objects based on association primary key. + + Fixes #20995. + + *himesh-r* + * Ensure that mutations of the array returned from `ActiveRecord::Relation#to_a` do not affect the original relation, by returning a duplicate array each time. @@ -214,6 +357,21 @@ ## Rails 5.0.0.beta1 (December 18, 2015) ## +* Limit record touching to once per transaction. + + If you have a parent/grand-parent relation like: + + Comment belongs_to :message, touch: true + Message belongs_to :project, touch: true + Project belongs_to :account, touch: true + + When the lowest entry(`Comment`) is saved, now, it won't repeat the touch + call multiple times for the parent records. + + Related #18606. + + *arthurnn* + * Order the result of `find(ids)` to match the passed array, if the relation has no explicit order defined. @@ -488,13 +646,13 @@ * Add option to index errors in nested attributes For models which have nested attributes, errors within those models will - now be indexed if :index_errors is specified when defining a + now be indexed if `:index_errors` is specified when defining a has_many relationship, or if its set in the global config. Example: class Guitar < ActiveRecord::Base - has_many :tuning_pegs + has_many :tuning_pegs, index_errors: true accepts_nested_attributes_for :tuning_pegs end @@ -1372,11 +1530,6 @@ *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* |