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Rails 3.2.9 (unreleased)

  • 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 for previous changes.