How do you order by a custom model method that has no attribute in SQL?

Question

Previously I ordered my posts as this:

@posts = Post.find(:all, :order => \"created_at DESC\")

But now I want to replace created_at

Answer 1

Well, just Post.find(:all) would return an array of AR objects. So you could use Array.sort_by and pass it a block, and since those records are already fetched, you can access the virtual attribute inside the block that sort_by takes.

RDoc: Enumerable.sort_by