get_bind_values

# File activerecord/lib/active_record/associations/association_scope.rb, line 34
      def self.get_bind_values(owner, chain)
        binds = []
        last_reflection = chain.last

        binds.push(*last_reflection.join_id_for(owner))
        if last_reflection.type
          binds << owner.class.polymorphic_name
        end

        chain.each_cons(2).each do |reflection, next_reflection|
          if reflection.type
            binds << next_reflection.klass.polymorphic_name
          end
        end
        binds
      end