Have you tried has_many_polymorphs (2.13)
http://m.onkey.org/2007/8/14/excuse-me-wtf-is-polymorphs
From: Heinz S. [email protected]
To: [email protected]
Sent: Sunday, September 6, 2009 4:47:51 AM
Subject: [Rails] Re: Polymorphic many-to-many relationship?
Managed to get it working by changing the fixture to:
resource: <%= Fixtures.identify(:row_house) %>
resource_type: BuildingType
Still don’t like it cause that’s not what RoR is about. Any help would
be still highly appreciated 
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