## Rails 3.2.11 (unreleased)
* Serialized attributes can be serialized in integer columns.
Fix #8575.
*Rafael Mendonça França*
* Keep index names when using `alter_table` with sqlite3.
Fix #3489.
Backport #8522.
*Yves Senn*
* Recognize migrations placed in directories containing numbers and 'rb'.
Fix #8492.
Backport of #8500.
*Yves Senn*
* Add `ActiveRecord::Base.cache_timestamp_format` class attribute to control
the format of the timestamp value in the cache key.
This allows users to improve the precision of the cache key.
Fixes #8195.
*Rafael Mendonça França*
* Add `:nsec` date format. This can be used to improve the precision of cache key.
Please note that this format only works with Ruby 1.9, Ruby 1.8 will ignore it completely.
*Jamie Gaskins*
* Unscope `update_column(s)` query to ignore default scope.
When applying `default_scope` to a class with a where clause, using
`update_column(s)` could generate a query that would not properly update
the record due to the where clause from the `default_scope` being applied
to the update query.
class User < ActiveRecord::Base
default_scope where(active: true)
end
user = User.first
user.active = false
user.save!
user.update_column(:active, true) # => false
In this situation we want to skip the default_scope clause and just
update the record based on the primary key. With this change:
user.update_column(:active, true) # => true
Backport of #8436 fix.
*Carlos Antonio da Silva*
* Fix performance problem with primary_key method in PostgreSQL adapter when having many schemas.
Uses pg_constraint table instead of pg_depend table which has many records in general.
Fix #8414
*kennyj*
* Do not instantiate intermediate Active Record objects when eager loading.
These records caused `after_find` to run more than expected.
Fix #3313
Backport of #8403
*Yves Senn*
* Fix `pluck` to work with joins. Backport of #4942.
*Carlos Antonio da Silva*
* Fix a problem with `translate_exception` method in a non English environment.
Backport of #6397.
*kennyj*
* Fix dirty attribute checks for TimeZoneConversion with nil and blank
datetime attributes. Setting a nil datetime to a blank string should not
result in a change being flagged.
Fixes #8310.
Backport of #8311.
*Alisdair McDiarmid*
* Prevent mass assignment to the type column of polymorphic associations when using `build`.
Fixes #8265.
Backport of #8291.
*Yves Senn*
* When running migrations on Postgresql, the `:limit` option for `binary` and `text` columns is
silently dropped.
Previously, these migrations caused sql exceptions, because Postgresql doesn't support limits
on these types.
*Victor Costan*
* Calling `include?` on `has_many` associations on unsaved records no longer
returns `true` when passed a record with a `nil` foreign key.
Fixes #7950.
*George Brocklehurst*
* `#pluck` can be used on a relation with `select` clause.
Fixes #7551.
Backport of #8176.
Example:
Topic.select([:approved, :id]).order(:id).pluck(:id)
*Yves Senn*
* Use `nil?` instead of `blank?` to check whether dynamic finder with a bang
should raise RecordNotFound.
Fixes #7238.
*Nikita Afanasenko*
* Fix deleting from a HABTM join table upon destroying an object of a model
with optimistic locking enabled.
Fixes #5332.
*Nick Rogers*
* Use query cache/uncache when using ENV["DATABASE_URL"].
Fixes #6951.
Backport of #8074.
*kennyj*
* Do not create useless database transaction when building `has_one` association.
Example:
User.has_one :profile
User.new.build_profile
Backport of #8154.
*Bogdan Gusiev*
* `AR::Base#attributes_before_type_cast` now returns unserialized values for serialized attributes.
*Nikita Afanasenko*
* Fix issue that raises `NameError` when overriding the `accepts_nested_attributes` in child classes.
Before:
class Shared::Person < ActiveRecord::Base
has_one :address
accepts_nested_attributes :address, :reject_if => :all_blank
end
class Person < Shared::Person
accepts_nested_attributes :address
end
Person
#=> NameError: method `address_attributes=' not defined in Person
After:
Person
#=> Person(id: integer, ...)
Fixes #8131.
*Gabriel Sobrinho, Ricardo Henrique*
## Rails 3.2.10 (Jan 2, 2013) ##
* CVE-2012-5664 options hashes should only be extracted if there are extra
parameters
## Rails 3.2.9 (Nov 12, 2012) ##
* Fix `find_in_batches` crashing when IDs are strings and start option is not specified.
*Alexis Bernard*
* Fix issue with collection associations calling first(n)/last(n) and attempting
to set the inverse association when `:inverse_of` was used. Fixes #8087.
*Carlos Antonio da Silva*
* Fix bug when Column is trying to type cast boolean values to integer.
Fixes #8067.
*Rafael Mendonça França*
* Fix bug where `rake db:test:prepare` tries to load the structure.sql into development database.
Fixes #8032.
*Grace Liu + Rafael Mendonça França*
* Fixed support for `DATABASE_URL` environment variable for rake db tasks. *Grace Liu*
* Fix bug where `update_columns` and `update_column` would not let you update the primary key column.
*Henrik Nyh*
* Decode URI encoded attributes on database connection URLs.
*Shawn Veader*
* Fix AR#dup to nullify the validation errors in the dup'ed object. Previously the original
and the dup'ed object shared the same errors.
*Christian Seiler*
* Synchronize around deleting from the reserved connections hash.
Fixes #7955
* PostgreSQL adapter correctly fetches default values when using
multiple schemas and domains in a db. Fixes #7914
*Arturo Pie*
* Fix deprecation notice when loading a collection association that
selects columns from other tables, if a new record was previously
built using that association.
*Ernie Miller*
* The postgres adapter now supports tables with capital letters.
Fix #5920
*Yves Senn*
* `CollectionAssociation#count` returns `0` without querying if the
parent record is not persisted.
Before:
person.pets.count
# SELECT COUNT(*) FROM "pets" WHERE "pets"."person_id" IS NULL
# => 0
After:
person.pets.count
# fires without sql query
# => 0
*Francesco Rodriguez*
* Fix `reset_counters` crashing on `has_many :through` associations.
Fix #7822.
*lulalala*
* ConnectionPool recognizes checkout_timeout spec key as taking
precedence over legacy wait_timeout spec key, can be used to avoid
conflict with mysql2 use of wait_timeout. Closes #7684.
*jrochkind*
* Rename field_changed? to _field_changed? so that users can create a field named field
*Akira Matsuda*, backported by *Steve Klabnik*
* Fix creation of through association models when using `collection=[]`
on a `has_many :through` association from an unsaved model.
Fix #7661.
*Ernie Miller*
* Explain only normal CRUD sql (select / update / insert / delete).
Fix problem that explains unexplainable sql. Closes #7544 #6458.
*kennyj*
* Backport test coverage to ensure that PostgreSQL auto-reconnect functionality
remains healthy.
*Steve Jorgensen*
* Use config['encoding'] instead of config['charset'] when executing
databases.rake in the mysql/mysql2. A correct option for a database.yml
is 'encoding'.
*kennyj*
* Fix ConnectionAdapters::Column.type_cast_code integer conversion,
to always convert values to integer calling #to_i. Fixes #7509.
*Thiago Pradi*
* Fix time column type casting for invalid time string values to correctly return nil.
*Adam Meehan*
* Fix `becomes` when using a configured `inheritance_column`.
*Yves Senn*
* Fix `reset_counters` when there are multiple `belongs_to` association with the
same foreign key and one of them have a counter cache.
Fixes #5200.
*Dave Desrochers*
* Round usec when comparing timestamp attributes in the dirty tracking.
Fixes #6975.
*kennyj*
* Use inversed parent for first and last child of has_many association.
*Ravil Bayramgalin*
* Fix Column.microseconds and Column.fast_string_to_date to avoid converting
timestamp seconds to a float, since it occasionally results in inaccuracies
with microsecond-precision times. Fixes #7352.
*Ari Pollak*
* Fix `increment!`, `decrement!`, `toggle!` that was skipping callbacks.
Fixes #7306.
*Rafael Mendonça França*
* Fix AR#create to return an unsaved record when AR::RecordInvalid is
raised. Fixes #3217.
*Dave Yeu*
* Remove unnecessary transaction when assigning has_one associations with a nil or equal value.
Fix #7191.
*kennyj*
* Allow store to work with an empty column.
Fix #4840.
*Jeremy Walker*
* Remove prepared statement from system query in postgresql adapter.
Fix #5872.
*Ivan Evtuhovich*
* Make sure `:environment` task is executed before `db:schema:load` or `db:structure:load`
Fixes #4772.
*Seamus Abshere*
## Rails 3.2.8 (Aug 9, 2012) ##
* Do not consider the numeric attribute as changed if the old value is zero and the new value
is not a string.
Fixes #7237.
*Rafael Mendonça França*
* Removes the deprecation of `update_attribute`. *fxn*
* Reverted the deprecation of `composed_of`. *Rafael Mendonça França*
* Reverted the deprecation of `*_sql` association options. They will
be deprecated in 4.0 instead. *Jon Leighton*
* Do not eager load AR session store. ActiveRecord::SessionStore depends on the abstract store
in Action Pack. Eager loading this class would break client code that eager loads Active Record
standalone.
Fixes #7160
*Xavier Noria*
* Do not set RAILS_ENV to "development" when using `db:test:prepare` and related rake tasks.
This was causing the truncation of the development database data when using RSpec.
Fixes #7175.
*Rafael Mendonça França*
## Rails 3.2.7 (Jul 26, 2012) ##
* `:finder_sql` and `:counter_sql` options on collection associations
are deprecated. Please transition to using scopes.
*Jon Leighton*
* `:insert_sql` and `:delete_sql` options on `has_and_belongs_to_many`
associations are deprecated. Please transition to using `has_many
:through`
*Jon Leighton*
* `composed_of` has been deprecated. You'll have to write your own accessor
and mutator methods if you'd like to use value objects to represent some
portion of your models.
*Steve Klabnik*
* `update_attribute` has been deprecated. Use `update_column` if
you want to bypass mass-assignment protection, validations, callbacks,
and touching of updated_at. Otherwise please use `update_attributes`.
*Steve Klabnik*
## Rails 3.2.6 (Jun 12, 2012) ##
* protect against the nesting of hashes changing the
table context in the next call to build_from_hash. This fix
covers this case as well.
CVE-2012-2695
* Revert earlier 'perf fix' (see 3.2.4 changelog / GH #6289). This
change introduced a regression (GH #6609). assoc.clear and
assoc.delete_all have loaded the association before doing the delete
since at least Rails 2.3. Doing the delete without loading the
records means that the `before_remove` and `after_remove` callbacks do
not get invoked. Therefore, this change was less a fix a more an
optimisation, which should only have gone into master.
*Jon Leighton*
## Rails 3.2.5 (Jun 1, 2012) ##
* Restore behavior of Active Record 3.2.3 scopes.
A series of commits relating to preloading and scopes caused a regression.
*Andrew White*
## Rails 3.2.4 (May 31, 2012) ##
* Perf fix: Don't load the records when doing assoc.delete_all.
GH #6289. *Jon Leighton*
* Association preloading shouldn't be affected by the current scoping.
This could cause infinite recursion and potentially other problems.
See GH #5667. *Jon Leighton*
* Datetime attributes are forced to be changed. GH #3965
* Fix attribute casting. GH #5549
* Fix #5667. Preloading should ignore scoping.
* Predicate builder should not recurse for determining where columns.
Thanks to Ben Murphy for reporting this! CVE-2012-2661
## Rails 3.2.3 (March 30, 2012) ##
* Added find_or_create_by_{attribute}! dynamic method. *Andrew White*
* Whitelist all attribute assignment by default. Change the default for newly generated applications to whitelist all attribute assignment. Also update the generated model classes so users are reminded of the importance of attr_accessible. *NZKoz*
* Update ActiveRecord::AttributeMethods#attribute_present? to return false for empty strings. *Jacobkg*
* Fix associations when using per class databases. *larskanis*
* Revert setting NOT NULL constraints in add_timestamps *fxn*
* Fix mysql to use proper text types. Fixes #3931. *kennyj*
* Fix #5069 - Protect foreign key from mass assignment through association builder. *byroot*
## Rails 3.2.2 (March 1, 2012) ##
* No changes.
## 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
from engine that you want to remove).
Example:
rake db:migrate SCOPE=blog
*Piotr Sarnacki*
* Migrations copied from engines are now scoped with engine's name,
for example 01_create_posts.blog.rb. *Piotr Sarnacki*
* Implements `AR::Base.silence_auto_explain`. This method allows the user to
selectively disable automatic EXPLAINs within a block. *fxn*
* Implements automatic EXPLAIN logging for slow queries.
A new configuration parameter `config.active_record.auto_explain_threshold_in_seconds`
determines what's to be considered a slow query. Setting that to `nil` disables
this feature. Defaults are 0.5 in development mode, and `nil` in test and production
modes.
As of this writing there's support for SQLite, MySQL (mysql2 adapter), and
PostgreSQL.
*fxn*
* Implemented ActiveRecord::Relation#pluck method
Method returns Array of column value from table under ActiveRecord model
Client.pluck(:id)
*Bogdan Gusiev*
* Automatic closure of connections in threads is deprecated. For example
the following code is deprecated:
Thread.new { Post.find(1) }.join
It should be changed to close the database connection at the end of
the thread:
Thread.new {
Post.find(1)
Post.connection.close
}.join
Only people who spawn threads in their application code need to worry
about this change.
* Deprecated:
* `set_table_name`
* `set_inheritance_column`
* `set_sequence_name`
* `set_primary_key`
* `set_locking_column`
Use an assignment method instead. For example, instead of `set_table_name`, use `self.table_name=`:
class Project < ActiveRecord::Base
self.table_name = "project"
end
Or define your own `self.table_name` method:
class Post < ActiveRecord::Base
def self.table_name
"special_" + super
end
end
Post.table_name # => "special_posts"
*Jon Leighton*
* Generated association methods are created within a separate module to allow overriding and
composition using `super`. For a class named `MyModel`, the module is named
`MyModel::GeneratedFeatureMethods`. It is included into the model class immediately after
the `generated_attributes_methods` module defined in ActiveModel, so association methods
override attribute methods of the same name. *Josh Susser*
* Implemented ActiveRecord::Relation#explain. *fxn*
* Add ActiveRecord::Relation#uniq for generating unique queries.
Before:
Client.select('DISTINCT name')
After:
Client.select(:name).uniq
This also allows you to revert the unqueness in a relation:
Client.select(:name).uniq.uniq(false)
*Jon Leighton*
* Support index sort order in sqlite, mysql and postgres adapters. *Vlad Jebelev*
* Allow the :class_name option for associations to take a symbol (:Client) in addition to
a string ('Client').
This is to avoid confusing newbies, and to be consistent with the fact that other options
like :foreign_key already allow a symbol or a string.
*Jon Leighton*
* In development mode the db:drop task also drops the test database. For symmetry with
the db:create task. *Dmitriy Kiriyenko*
* Added ActiveRecord::Base.store for declaring simple single-column key/value stores *DHH*
class User < ActiveRecord::Base
store :settings, accessors: [ :color, :homepage ]
end
u = User.new(color: 'black', homepage: '37signals.com')
u.color # Accessor stored attribute
u.settings[:country] = 'Denmark' # Any attribute, even if not specified with an accessor
* MySQL: case-insensitive uniqueness validation avoids calling LOWER when
the column already uses a case-insensitive collation. Fixes #561.
*Joseph Palermo*
* Transactional fixtures enlist all active database connections. You can test
models on different connections without disabling transactional fixtures.
*Jeremy Kemper*
* Add first_or_create, first_or_create!, first_or_initialize methods to Active Record. This is a
better approach over the old find_or_create_by dynamic methods because it's clearer which
arguments are used to find the record and which are used to create it:
User.where(:first_name => "Scarlett").first_or_create!(:last_name => "Johansson")
*Andrés Mejía*
* Fix nested attributes bug where _destroy parameter is taken into account
during :reject_if => :all_blank (fixes #2937)
*Aaron Christy*
* Add ActiveSupport::Cache::NullStore for use in development and testing.
*Brian Durand*
Please check [3-1-stable](https://github.com/rails/rails/blob/3-1-stable/activerecord/CHANGELOG.md) for previous changes.