Edge Rails (pre 1.1) has a new option for associations that allow multiple models to have associations with a shared single model. It’s almost like STI, but for associations (I think).
Until there is official documentation on the matter, this page will serve as a collecting point for links and scraps of knowledge about using polymorphic associations.
Here are some links to get you started:
- UnderstandingPolymorphicAssociations
- HowToUsePolymorphicAssociations – using :polymorphic and :through
- SimplePolymorphicAssociation – using :polymorphic by itself
- ActsAsTaggablePluginHowto
- has_many_polymorphs plugin
- acts_as_taggable plugin
- acts_as_attachment plugin
- Polymorphic Associations [ML post by Dylan Stamat on 09.02.2006]
- Re: I need untyped associations [ML post by Tobias Luetke on 13.01.2006]
- DHH Pursuing beauty with Ruby on Rails [PDF]
- http://thread.gmane.org/gmane.comp.lang.ruby.rails/46834
- The other side of polymorphic :through associations