Am I reinventing polymorphic associations? I have a fairly standard blog with comments model, with the following additions:
(1) Multiple models can accept comments (blog post, bug report, etc). (2) Each group of comments has a list of subscribers that will be emailed when a new comment is posted. Requirement (1) leads me to a polymorphic association. But I can't see how to fit requirement (2) into that. Each group of comments needs some place to store the list of subscribers. So I added a CommentGroup table. class BlogPost < ActiveRecord::Base belongs_to :comment_group end class BugReport < ActiveRecord::Base belongs_to :comment_group end class CommentGroup < ActiveRecord::Base has_one :blog_post has_one :bug_report # note: one or the other will be nil has_and_belongs_to_many :subscribers end class Comment < ActiveRecord::Base belongs_to :comment_group end ---- But now table :comment_group only has one field: id. And that just seems wrong to me. Is that bad? --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk@googlegroups.com To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
