Hey all
Suppose Post has many comments.
Is it possible to call Post.all and order them by the number of comments each has without adding a column 'comments_count' to the Post table?
If not, can anyone think of a nicer way of doing it this than:
def Post.order_by_comments posts = Post.all post_hash = {} posts.each { |post| post_hash[post.id] = post.comments.count } sorted_posts = posts.sort {|a,b| a[1]<=>b[1] } # =>sorts by keys ids = sorted_posts.collect(&:first) # => collects the post ids ids.reverse! # =>sorts the ids from most comments to least end