Polymorphic association in reverse

Posted by Erik on Stack Overflow See other posts from Stack Overflow or by Erik
Published on 2010-03-17T15:58:52Z Indexed on 2010/03/17 16:01 UTC
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ruby-on-rails

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ruby-on-rails3

Let's say that I have two models - one called Post and one other called Video. I then have a third model - Comment - that is polymorphically associated to to each of these models.

I can then easily do post.comments and video.comments to find comments assosciated to records of these models. All easy so far.

But what if I want to go the other way and I want to find ALL posts and videos that have been commented on and display these in a list sorted on the date that the comment was made? Is this possible?

If it helps I'm working on Rails 3 beta.

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