ctran/annotate_models — pull request #86 by kuroda (2012-07-20 09:57:21+00:00)
Title: expect a model without primary key

If we try to annotate a model without primary key, we will get an error `undefined method 'to_sym' for nil:NilClass` on `lib/annotate/annotate_models.rb:85`.

This patch fixes this problem.