search for: child_docu

I have this code in a view: <% for topic in @topics %> <%= topic.id %> <%= topic.dr_title %><br/> <ul> <% for doc in topic.child_documents %> <%= doc.dr_title %><br/> <% doc = nil %> <% end %> </ul> <% end %> Though the topic titles and IDs display correctly, the child documents for every topic are the same (the ones belonging to the first topic)...

...sing push_with_attributes. Is that possible? Less briefly: I have a legacy postgresql database where one of the join tables has an ID column, so I had to set up the association with a custom :finder_sql attribute, as follows: class Topic < ActiveRecord::Base [...] has_and_belongs_to_many :child_documents, :class_name => "Document", :join_table => "topic_subtopic", :foreign_key => "topic_key", :association_foreign_key => "child_topic_key", :finder_sql => ''select t.*, ts.display_header from topics t, topic_subtopic ts whe...