app/models/relation_member.rb

   1 class RelationMember < ActiveRecord::Base
   2   set_table_name 'current_relation_members'
   3
   4   set_primary_keys :id, :sequence_id
   5   belongs_to :member, :polymorphic => true, :foreign_type => :member_class
   6   belongs_to :relation, :foreign_key => :id
   7
   8   def after_find
   9     self[:member_class] = self.member_type.classify
  10   end
  11
  12   def after_initialize
  13     self[:member_class] = self.member_type.classify unless self.member_type.nil?
  14   end
  15
  16   def before_save
  17     self.member_type = self[:member_class].classify
  18   end
  19
  20   def member_type=(type)
  21     self[:member_type] = type
  22     self[:member_class] = type.capitalize
  23   end
  24 end