validates_uniqueness_of should respect aliases

[koterpillar]

As the other validators already do, it would be good to enable to validate uniqueness of aliased attributes:

class User extends ActiveRecord\Model {
    static $alias_attribute = array( 'login' => 'meh_this_is_a_legacy_table' );
    static $validates_uniqueness_of = array( 'login' );
}

Currently, the code fails with

Uncaught exception 'ActiveRecord\\DatabaseException' with message '42S22, 1054, Unknown column 'login' in 'where clause''

Using the original name for the attribute is a workaround, but will not look nice with validators:

Meh this is a legacy table is not unique

[koterpillar]

I have (hopefully) fixed it in 7ca77757abd4d36447c1ceb028e8b373eec851cf.

[kla]

This has been fixed in the integration branch. Should be in the master branch shortly.

http://github.com/kla/php-activerecord/commit/c658e7e41df94c000aee836a743c973e2238327a