Forum: Ruby on Rails has_many :through relationship in polymorphic associations

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Preethi S. (Guest)
on 2009-02-27 14:44
I'm facing an issue in polymorphic associations when i try to to
:through relationship.
I've three models:profile,gbluser,community

  belongs_to :node ,:polymorphic => true
  belongs_to :community,:class_name => "community",
                        :foreign_key => "node_id",
                        :conditions => "node_type = 'community'"
  belongs_to :gblorganization,:class_name => "gblorganization",
                        :foreign_key => "node_id",
                        :conditions => "node_type = 'gblorganization'"
  has_and_belongs_to_many :gblusers

has_many :communities,,:through=>:profiles,:conditions =>
"profiles.node_type = 'Community'",:source=>:community

has_many :gblusers ,:class_name
=>"gbluser",:through=>:profiles,:conditions => "profiles.node_type =

I'm trying to implement has_many :through relationship between community
and users.
user has_many communities through profiles and
communities has_many users through profiles

When i'm trying to do @user.communities, the search is made not on the
mapping table between user and profiles but on the profile table itself.
Rails is searching for user_id in profiles table but i've
has_and_belongs_to_many between profile and user.
How to solve this problem? Am I wrong somewhere. Please guide me.
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