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Diffstat (limited to 'activerecord/CHANGELOG.md')
| -rw-r--r-- | activerecord/CHANGELOG.md | 225 |
1 files changed, 220 insertions, 5 deletions
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md index c4feabfb5f..cea50aaa9d 100644 --- a/activerecord/CHANGELOG.md +++ b/activerecord/CHANGELOG.md @@ -1,5 +1,99 @@ ## Rails 4.0.0 (unreleased) ## +* Added support for partial indices to PostgreSQL adapter + + The `add_index` method now supports a `where` option that receives a + string with the partial index criteria. + + add_index(:accounts, :code, :where => "active") + + Generates + + CREATE INDEX index_accounts_on_code ON accounts(code) WHERE active + + *Marcelo Silveira* + +* Implemented ActiveRecord::Relation#none method + + The `none` method returns a chainable relation with zero records + (an instance of the NullRelation class). + + Any subsequent condition chained to the returned relation will continue + generating an empty relation and will not fire any query to the database. + + *Juanjo Bazán* + +* Added the `ActiveRecord::NullRelation` class implementing the null + object pattern for the Relation class. *Juanjo Bazán* + +* Added deprecation for the `:dependent => :restrict` association option. + + Please note: + + * Up until now `has_many` and `has_one`, `:dependent => :restrict` + option raised a `DeleteRestrictionError` at the time of destroying + the object. Instead, it will add an error on the model. + + * To fix this warning, make sure your code isn't relying on a + `DeleteRestrictionError` and then add + `config.active_record.dependent_restrict_raises = false` to your + application config. + + * New rails application would be generated with the + `config.active_record.dependent_restrict_raises = false` in the + application config. + + *Manoj Kumar* + +* Added `create_join_table` migration helper to create HABTM join tables + + create_join_table :products, :categories + # => + # create_table :categories_products, :id => false do |td| + # td.integer :product_id, :null => false + # td.integer :category_id, :null => false + # end + + *Rafael Mendonça França* + +* The primary key is always initialized in the @attributes hash to nil (unless + another value has been specified). + +* In previous releases, the following would generate a single query with + an `OUTER JOIN comments`, rather than two separate queries: + + Post.includes(:comments) + .where("comments.name = 'foo'") + + This behaviour relies on matching SQL string, which is an inherently + flawed idea unless we write an SQL parser, which we do not wish to + do. + + Therefore, it is now deprecated. + + To avoid deprecation warnings and for future compatibility, you must + explicitly state which tables you reference, when using SQL snippets: + + Post.includes(:comments) + .where("comments.name = 'foo'") + .references(:comments) + + Note that you do not need to explicitly specify references in the + following cases, as they can be automatically inferred: + + Post.where(comments: { name: 'foo' }) + Post.where('comments.name' => 'foo') + Post.order('comments.name') + + You also do not need to worry about this unless you are doing eager + loading. Basically, don't worry unless you see a deprecation warning + or (in future releases) an SQL error due to a missing JOIN. + + [Jon Leighton] + +* Support for the `schema_info` table has been dropped. Please + switch to `schema_migrations`. + * Connections *must* be closed at the end of a thread. If not, your connection pool can fill and an exception will be raised. @@ -35,7 +129,49 @@ * PostgreSQL hstore types are automatically deserialized from the database. -## Rails 3.2.0 (unreleased) ## + +## Rails 3.2.1 (January 26, 2012) ## + +* The threshold for auto EXPLAIN is ignored if there's no logger. *fxn* + +* Call `to_s` on the value passed to `table_name=`, in particular symbols + are supported (regression). *Sergey Nartimov* + +* Fix possible race condition when two threads try to define attribute + methods for the same class. *Jon Leighton* + + +## Rails 3.2.0 (January 20, 2012) ## + +* Added a `with_lock` method to ActiveRecord objects, which starts + a transaction, locks the object (pessimistically) and yields to the block. + The method takes one (optional) parameter and passes it to `lock!`. + + Before: + + class Order < ActiveRecord::Base + def cancel! + transaction do + lock! + # ... cancelling logic + end + end + end + + After: + + class Order < ActiveRecord::Base + def cancel! + with_lock do + # ... cancelling logic + end + end + end + + *Olek Janiszewski* + +* 'on' and 'ON' boolean columns values are type casted to true + *Santiago Pastorino* * Added ability to run migrations only for given scope, which allows to run migrations only from one engine (for example to revert changes @@ -44,7 +180,7 @@ Example: rake db:migrate SCOPE=blog - *Piotr Sarnacki* + *Piotr Sarnacki* * Migrations copied from engines are now scoped with engine's name, for example 01_create_posts.blog.rb. *Piotr Sarnacki* @@ -131,7 +267,7 @@ Client.select(:name).uniq - This also allows you to revert the unqueness in a relation: + This also allows you to revert the uniqueness in a relation: Client.select(:name).uniq.uniq(false) @@ -184,7 +320,34 @@ *Aaron Christy* -## Rails 3.1.3 (unreleased) ## + ## Rails 3.1.4 (unreleased) ## + + * Fix a custom primary key regression *GH 3987* + + *Jon Leighton* + + * Perf fix (second try): don't load records for `has many :dependent => + :delete_all` *GH 3672* + + *Jon Leighton* + + * Fix accessing `proxy_association` method from an association extension + where the calls are chained. *GH #3890* + + (E.g. `post.comments.where(bla).my_proxy_method`) + + *Jon Leighton* + + * Perf fix: MySQL primary key lookup was still slow for very large + tables. *GH 3678* + + *Kenny J* + + * Perf fix: If a table has no primary key, don't repeatedly ask the database for it. + + *Julius de Bruijn* + +### Rails 3.1.3 (November 20, 2011) ## * Perf fix: If we're deleting all records in an association, don't add a IN(..) clause to the query. *GH 3672* @@ -197,7 +360,7 @@ *Christos Zisopoulos and Kenny J* -## Rails 3.1.2 (unreleased) ## +### Rails 3.1.2 (November 18, 2011) ## * Fix bug with PostgreSQLAdapter#indexes. When the search path has multiple schemas, spaces were not being stripped from the schema names after the first. @@ -616,6 +779,58 @@ *Aaron Patterson* +## Rails 3.0.12 (unreleased) ## + +* No changes. + + +## Rails 3.0.11 (November 18, 2011) ## + +* Exceptions from database adapters should not lose their backtrace. + +* Backport "ActiveRecord::Persistence#touch should not use default_scope" (GH #1519) + +* Psych errors with poor yaml formatting are proxied. Fixes GH #2645 and + GH #2731 + +* Fix ActiveRecord#exists? when passsed a nil value + + +## Rails 3.0.10 (August 16, 2011) ## + +* Magic encoding comment added to schema.rb files + +* schema.rb is written as UTF-8 by default. + +* Ensuring an established connection when running `rake db:schema:dump` + +* Association conditions will not clobber join conditions. + +* Destroying a record will destroy the HABTM record before destroying itself. + GH #402. + +* Make `ActiveRecord::Batches#find_each` to not return `self`. + +* Update `table_exists?` in PG to to always use current search_path or schema if explictly set. + + +## Rails 3.0.9 (June 16, 2011) ## + +* No changes. + + +## Rails 3.0.8 (June 7, 2011) ## + +* Fix various problems with using :primary_key and :foreign_key options in conjunction with + :through associations. [Jon Leighton] + +* Correctly handle inner joins on polymorphic relationships. + +* Fixed infinity and negative infinity cases in PG date columns. + +* Creating records with invalid associations via `create` or `save` will no longer raise exceptions. + + ## Rails 3.0.7 (April 18, 2011) ## * Destroying records via nested attributes works independent of reject_if LH #6006 *Durran Jordan* |