# Model Design question in Rails **URL:** \ **Category:** Rails\ **Created:** [November 7, 2007, 8:39pm UTC](https://www.ruby-forum.com/t/model-design-question-in-rails/119545 "2007-11-07T20:39:07Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![raghus](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/958977/32.png) [@raghus](https://www.ruby-forum.com/u/raghus)\ **Post date:** [November 7, 2007, 8:39pm UTC](https://www.ruby-forum.com/t/model-design-question-in-rails/119545/1 "2007-11-07T20:39:07Z")
I have a site which has both articles and photos embedded in each article. I want to allow people to comment on both a particular article itself as well as on an individual photo in an article. My questions is: What’s the best design for the DB model - one Comments table with a flag to say if the comment was on an article or a photo or two separate tables - one for comments on articles and the other for comments on articles? What’s a good naming convention for these tables? I realize there may be no single correct answer but I am hoping to get some good suggestions/ideas. ---
**Author:** ![raghus](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/958977/32.png) [@raghus](https://www.ruby-forum.com/u/raghus)\ **Post date:** [November 7, 2007, 8:41pm UTC](https://www.ruby-forum.com/t/model-design-question-in-rails/119545/2 "2007-11-07T20:41:29Z")
I’ll correct some spellos first 1. My question is… 2. One for comments on articles and the other for comments on photos. ---
**Author:** ![raghus](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/958977/32.png) [@raghus](https://www.ruby-forum.com/u/raghus)\ **Post date:** [November 7, 2007, 10:21pm UTC](https://www.ruby-forum.com/t/model-design-question-in-rails/119545/3 "2007-11-07T22:21:49Z")
Have you looked into polymorphic associations? Fred