last_chain_scope

# File activerecord/lib/active_record/associations/association_scope.rb, line 58
        def last_chain_scope(scope, reflection, owner)
          primary_key = reflection.join_primary_key
          foreign_key = reflection.join_foreign_key

          table = reflection.aliased_table
          value = transform_value(owner[foreign_key])
          scope = apply_scope(scope, table, primary_key, value)

          if reflection.type
            polymorphic_type = transform_value(owner.class.polymorphic_name)
            scope = apply_scope(scope, table, reflection.type, polymorphic_type)
          end

          scope
        end