diff options
| -rw-r--r-- | activerecord/CHANGELOG | 2 | ||||
| -rwxr-xr-x | activerecord/lib/active_record/associations.rb | 4 |
2 files changed, 5 insertions, 1 deletions
diff --git a/activerecord/CHANGELOG b/activerecord/CHANGELOG index 044d6e3205..c501af6f44 100644 --- a/activerecord/CHANGELOG +++ b/activerecord/CHANGELOG @@ -1,5 +1,7 @@ *SVN* +* Add docs for the :as option in has_one associations. Closes #5144 [cdcarter@gmail.com] + * Fixed that has_many collections shouldn't load the entire association to do build or create [DHH] * Added :allow_nil option for aggregations #5091 [ian.w.white@gmail.com] diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb index 00ab226db0..3d207aab61 100755 --- a/activerecord/lib/active_record/associations.rb +++ b/activerecord/lib/active_record/associations.rb @@ -586,12 +586,14 @@ module ActiveRecord # of this class in lower-case and "_id" suffixed. So a +Person+ class that makes a has_one association will use "person_id" # as the default foreign_key. # * <tt>:include</tt> - specify second-order associations that should be eager loaded when this object is loaded. - # + # * <tt>:as</tt>: Specifies a polymorphic interface (See #belongs_to). + # # Option examples: # has_one :credit_card, :dependent => :destroy # destroys the associated credit card # has_one :credit_card, :dependent => :nullify # updates the associated records foriegn key value to null rather than destroying it # has_one :last_comment, :class_name => "Comment", :order => "posted_on" # has_one :project_manager, :class_name => "Person", :conditions => "role = 'project_manager'" + # has_one :attachment, :as => :attachable def has_one(association_id, options = {}) reflection = create_has_one_reflection(association_id, options) |