Associating Models with Polymorphic
- by Josh Crowder
I am trying to associate Contacts with Classes but as two different types. Current_classes and Interested_classes.
I know I need to enable polymorphic but I am not sure as to where it needs to be enabled.
This is what I have at the moment
class CreateClasses < ActiveRecord::Migration
def self.up
create_table :classes do |t|
t.string :class_type
t.string :class_name
t.string :date
t.timestamps
end
end
def self.down
drop_table :classes
end
end
class CreateContactsInterestedClassesJoin < ActiveRecord::Migration
def self.up
create_table 'contacts_interested_classes', :id => false do |t|
t.column 'class_id', :integer
t.column 'contact_id', :integer
end
end
def self.down
drop_table 'contacts_interested_classes'
end
end
class CreateContactsCurrentClassesJoin < ActiveRecord::Migration
def self.up
create_table 'contacts_current_classes', :id => false do |t|
t.column 'class_id', :integer
t.column 'contact_id', :integer
end
end
def self.down
drop_table 'contacts_current_classes'
end
end
And then inside of my Contacts Model I want to have something like this.
class Contact < ActiveRecord::Base
has_and_belongs_to_many :classes, :join_table => "contacts_interested_classes", :foreign_key => "class_id" :as => 'interested_classes'
has_and_belongs_to_many :classes, :join_table => "contacts_current_classes", :foreign_key => "class_id" :as => 'current_classes'
end
What am I doing wrong?
