1 files changed, 406 insertions, 12 deletions
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index 61dba12b64..e15756e834 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -1,3 +1,397 @@
+*   Allow for the name of the schema_migrations table to be configured.
+
+    *Jerad Phelps*
+
+*   Do not add to scope includes values from through associations.
+    Fixed bug when providing `includes` in through association scope, and fetching targets.
+
+    Example:
+        class Vendor < ActiveRecord::Base
+          has_many :relationships, -> { includes(:user) }
+          has_many :users, through: :relationships
+        end
+
+        vendor = Vendor.first
+
+        # Before
+
+        vendor.users.to_a # => Raises exception: not found `:user` for `User`
+
+        # After
+
+        vendor.users.to_a # => No exception is raised
+
+
+    Fixes: #12242, #9517, #10240
+
+    *Paul Nikitochkin*
+
+*   Type cast json values on write, so that the value is consistent
+    with reading from the database.
+
+    Example:
+
+        x = JsonDataType.new tags: {"string" => "foo", :symbol => :bar}
+
+        # Before:
+        x.tags # => {"string" => "foo", :symbol => :bar}
+
+        # After:
+        x.tags # => {"string" => "foo", "symbol" => "bar"}
+
+    *Severin Schoepke*
+
+*   `ActiveRecord::Store` works together with PG `hstore` columns.
+    Fixes #12452.
+
+    *Yves Senn*
+
+*   Fix bug where `ActiveRecord::Store` used a global `Hash` to keep track of
+    all registered `stored_attributes`. Now every subclass of
+    `ActiveRecord::Base` has it's own `Hash`.
+
+    *Yves Senn*
+
+*   Save `has_one` association when primary key is manually set.
+
+    Fixes #12302.
+
+    *Lauro Caetano*
+
+*    Allow any version of BCrypt when using `has_secure_password`.
+
+     *Mike Perham*
+
+*    Sub-query generated for `Relation` passed as array condition did not take in account
+     bind values and have invalid syntax.
+
+     Generate sub-query with inline bind values.
+
+     Fixes #12586.
+
+     *Paul Nikitochkin*
+
+*   Fix a bug where rake db:structure:load crashed when the path contained
+    spaces.
+
+    *Kevin Mook*
+
+*   `ActiveRecord::QueryMethods#unscope` unscopes negative equality
+
+    Allows you to call `#unscope` on a relation with negative equality
+    operators, i.e. `Arel::Nodes::NotIn` and `Arel::Nodes::NotEqual` that have
+    been generated through the use of `where.not`.
+
+    *Eric Hankins*
+
+*   Raise an exception when model without primary key calls `.find_with_ids`.
+
+    *Shimpei Makimoto*
+
+*   Make `Relation#empty?` use `exists?` instead of `count`.
+
+    *Szymon Nowak*
+
+*   `rake db:structure:dump` no longer crashes when the port was specified as `Fixnum`.
+
+    *Kenta Okamoto*
+
+*   `NullRelation#pluck` takes a list of columns
+
+    The method signature in `NullRelation` was updated to mimic that in
+    `Calculations`.
+
+    *Derek Prior*
+
+*   `scope_chain` should not be mutated for other reflections.
+
+    Currently `scope_chain` uses same array for building different
+    `scope_chain` for different associations. During processing
+    these arrays are sometimes mutated and because of in-place
+    mutation the changed `scope_chain` impacts other reflections.
+
+    Fix is to dup the value before adding to the `scope_chain`.
+
+    Fixes #3882.
+
+    *Neeraj Singh*
+
+*   Prevent the inversed association from being reloaded on save.
+
+    Fixes #9499.
+
+    *Dmitry Polushkin*
+
+*   Generate subquery for `Relation` if it passed as array condition for `where`
+    method.
+
+    Example:
+
+        # Before
+        Blog.where('id in (?)', Blog.where(id: 1))
+        # =>  SELECT "blogs".* FROM "blogs"  WHERE "blogs"."id" = 1
+        # =>  SELECT "blogs".* FROM "blogs"  WHERE (id IN (1))
+
+        # After
+        Blog.where('id in (?)', Blog.where(id: 1).select(:id))
+        # =>  SELECT "blogs".* FROM "blogs"
+        #     WHERE "blogs"."id" IN (SELECT "blogs"."id" FROM "blogs"  WHERE "blogs"."id" = 1)
+
+    Fixes #12415.
+
+    *Paul Nikitochkin*
+
+*   For missed association exception message
+    which is raised in `ActiveRecord::Associations::Preloader` class
+    added owner record class name in order to simplify to find problem code.
+
+    *Paul Nikitochkin*
+
+*   `has_and_belongs_to_many` is now transparently implemented in terms of
+    `has_many :through`.  Behavior should remain the same, if not, it is a bug.
+
+*   `create_savepoint`, `rollback_to_savepoint` and `release_savepoint` accept
+    a savepoint name.
+
+    *Yves Senn*
+
+*   Make `next_migration_number` accessible for third party generators.
+
+    *Yves Senn*
+
+*   Objects instantiated using a null relationship will now retain the
+    attributes of the where clause.
+
+    Fixes #11676, #11675, #11376.
+
+    *Paul Nikitochkin*, *Peter Brown*, *Nthalk*
+
+*   Fixed `ActiveRecord::Associations::CollectionAssociation#find`
+    when using `has_many` association with `:inverse_of` and finding an array of one element,
+    it should return an array of one element too.
+
+    *arthurnn*
+
+*   Callbacks on has_many should access the in memory parent if a inverse_of is set.
+
+    *arthurnn*
+
+*   `ActiveRecord::ConnectionAdapters.string_to_time` respects
+    string with timezone (e.g. Wed, 04 Sep 2013 20:30:00 JST).
+
+    Fixes #12278.
+
+    *kennyj*
+
+*   Calling `update_attributes` will now throw an `ArgumentError` whenever it
+    gets a `nil` argument. More specifically, it will throw an error if the
+    argument that it gets passed does not respond to to `stringify_keys`.
+
+    Example:
+
+        @my_comment.update_attributes(nil)  # => raises ArgumentError
+
+    *John Wang*
+
+*   Deprecate `quoted_locking_column` method, which isn't used anywhere.
+
+    *kennyj*
+
+*   Migration dump UUID default functions to schema.rb.
+
+    Fixes #10751.
+
+    *kennyj*
+
+*   Fixed a bug in `ActiveRecord::Associations::CollectionAssociation#find_by_scan`
+    when using `has_many` association with `:inverse_of` option and UUID primary key.
+
+    Fixes #10450.
+
+    *kennyj*
+
+*   ActiveRecord::Base#<=> has been removed.  Primary keys may not be in order,
+    or even be numbers, so sorting by id doesn't make sense.  Please use `sort_by`
+    and specify the attribute you wish to sort with.  For example, change:
+
+      Post.all.to_a.sort
+
+    to:
+
+      Post.all.to_a.sort_by(&:id)
+
+    *Aaron Patterson*
+
+*   Fix: joins association, with defined in the scope block constraints by using several
+    where constraints and at least of them is not `Arel::Nodes::Equality`,
+    generates invalid SQL expression.
+
+    Fixes #11963.
+
+    *Paul Nikitochkin*
+
+*   Deprecate the delegation of Array bang methods for associations.
+    To use them, instead first call `#to_a` on the association to access the
+    array to be acted on.
+
+    *Ben Woosley*
+
+*   `CollectionAssociation#first`/`#last` (e.g. `has_many`) use a `LIMIT`ed
+    query to fetch results rather than loading the entire collection.
+
+    *Lann Martin*
+
+*   Make possible to run SQLite rake tasks without the `Rails` constant defined.
+
+    *Damien Mathieu*
+
+*   Allow Relation#from to accept other relations with bind values.
+
+    *Ryan Wallace*
+
+*   Fix inserts with prepared statements disabled.
+
+    Fixes #12023.
+
+    *Rafael Mendonça França*
+
+*   Setting a has_one association on a new record no longer causes an empty
+    transaction.
+
+    *Dylan Thacker-Smith*
+
+*   Fix `AR::Relation#merge` sometimes failing to preserve `readonly(false)` flag.
+
+    *thedarkone*
+
+*   Re-use `order` argument pre-processing for `reorder`.
+
+    *Paul Nikitochkin*
+
+*   Fix PredicateBuilder so polymorphic association keys in `where` clause can
+    accept objects other than direct descendants of `ActiveRecord::Base` (decorated
+    models, for example).
+
+    *Mikhail Dieterle*
+
+*   PostgreSQL adapter recognizes negative money values formatted with
+    parentheses (eg. `($1.25) # => -1.25`)).
+    Fixes #11899.
+
+    *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.
+
+    *Eric Tipton*
+
+*   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}
+
+        # Before:
+        x.tags # => {"bool" => true, "number" => 5}
+
+        # After:
+        x.tags # => {"bool" => "true", "number" => "5"}
+
+    *Yves Senn* , *Severin Schoepke*
+
+*   Fix multidimensional PG arrays containing non-string items.
+
+    *Yves Senn*
+
+*   Fixes bug when using includes combined with select, the select statement was overwritten.
+
+    Fixes #11773.
+
+    *Edo Balvers*
+
+*   Load fixtures from linked folders.
+
+    *Kassio Borges*
+
+*   Create a directory for sqlite3 file if not present on the system.
+
+    *Richard Schneeman*
+
+*   Removed redundant override of `xml` column definition for PG,
+    in order to use `xml` column type instead of `text`.
+
+    *Paul Nikitochkin*, *Michael Nikitochkin*
+
+*   Revert `ActiveRecord::Relation#order` change that make new order
+    prepend the old one.
+
+    Before:
+
+        User.order("name asc").order("created_at desc")
+        # SELECT * FROM users ORDER BY created_at desc, name asc
+
+    After:
+
+        User.order("name asc").order("created_at desc")
+        # SELECT * FROM users ORDER BY name asc, created_at desc
+
+    This also affects order defined in `default_scope` or any kind of associations.
+
+*   Add ability to define how a class is converted to Arel predicates.
+    For example, adding a very vendor specific regex implementation:
+
+        regex_handler = proc do |column, value|
+          Arel::Nodes::InfixOperation.new('~', column, value.source)
+        end
+        ActiveRecord::PredicateBuilder.register_handler(Regexp, regex_handler)
+
+    *Sean Griffin & @joannecheng*
+
 *   Don't allow `quote_value` to be called without a column.
 
     Some adapters require column information to do their job properly.
@@ -9,15 +403,15 @@
 
 *   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 colmn types.
+    affecting certain databases that use specific column types.
 
-    Fixes: #6763
+    Fixes #6763.
 
     *Alfred Wong*
 
 *   rescue from all exceptions in `ConnectionManagement#call`
 
-    Fixes #11497
+    Fixes #11497.
 
     As `ActiveRecord::ConnectionAdapters::ConnectionManagement` middleware does
     not rescue from Exception (but only from StandardError), the Connection
@@ -39,27 +433,27 @@
 
 *   Remove extra decrement of transaction deep level.
 
-    Fixes: #4566
+    Fixes #4566.
 
     *Paul Nikitochkin*
 
 *   Reset @column_defaults when assigning `locking_column`.
     We had a potential problem. For example:
 
-    class Post < ActiveRecord::Base
-      self.column_defaults  # if we call this unintentionally before setting locking_column ...
-      self.locking_column = 'my_locking_column'
-    end
+      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 !
+      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`.
 
-    Fixes: #11288
+    Fixes #11288.
 
     *Paul Nikitochkin*
 
@@ -299,7 +693,7 @@
 
     *Neeraj Singh*
 
-*   Fixture setup does no longer depend on `ActiveRecord::Base.configurations`.
+*   Fixture setup no longer depends on `ActiveRecord::Base.configurations`.
     This is relevant when `ENV["DATABASE_URL"]` is used in place of a `database.yml`.
 
     *Yves Senn*