lookup_ancestors

# File activerecord/lib/active_record/base.rb, line 756
      def lookup_ancestors #:nodoc:
        klass = self
        classes = [klass]
        while klass != klass.base_class
          classes << klass = klass.superclass
        end
        classes
      rescue
        # OPTIMIZE this rescue is to fix this test: ./test/cases/reflection_test.rb:56:in `test_human_name_for_column'
        # Apparently the method base_class causes some trouble.
        # It now works for sure.
        [self]
      end