This makes it possible to filter invalid input values before they are passed
into the value-object (like empty strings). This behaviour is only relevant
if the :allow_nil options is set to true. Otherwise you will get
the resulting NoMethodError.

Implement proxy_owner, proxy_target and proxy_reflection methods on CollectionProxy with deprecations. Fixes #1148.

The build_association method was added as an API for plugins
to hook into in 1398db01. This commit restores this API and the
ability to override class.new to return a subclass based on
a virtual attribute in the attributes hash.

Add ActiveRecord::attribute_names to retrieve a list of attribute names. This method will also return an empty array on an abstract class or a model that the table doesn't exists.

CollectionAssociation#merge_target_lists should write to the underlying attributes when copying, rather than using the assignment method

Don't use mass-assignment protection when setting foreign keys or association conditions on singular associations. Fixes #481 (again).

updated AR#create! to accept an options hash so the mass-assignment security role can be passed in, also updated the Changelog to mention the change to some of the AR method signatures.

- If doing a count on a relation that has an :include and a :join, it does a distinct even though it should not.
- When doing a count on a relation that has an :include, it always falls back to a old style left join when performing the count.  Looks like it was broken here:
https://github.com/rails/rails/commit/b9599502c9e738a5a1513e75d08f8d40ed408265

Add test to specify that attributes from an association's conditions should be assigned without mass-assignment protection when a record is built on the association.

if a query contains a limit or an offset, ActiveRecord::FinderMethods#find_last had inconsistent behavior.

If the records were loaded, it returned the last record in the cached list.
If they were not, it reversed the order of the query and changed the limit to one.
If the earlier limit was less than the total matching the query in the db,
it would return a different record than if the records had been cached.

This commit changes find_last so that it loads the records when getting the
last record on a query containing a limit or an offset, which makes the behavior consistent.

Ensure that ORDER BY clauses from default scopes are not included in calculation queries. Fixes #406.

[Fixes #439]

This reverts commit 886818d2.

Revert "Merge pull request #423 from richardiux/master"

This reverts commit b8f08c4e, reversing
changes made to fd9df1b1.

Adding base method symbolized_sti_name to activerecord base to be used on identity map. Identity map now considers the inheritance when creating the caching keys