Question

I would like to sort forum’s users by total_content_length. To get the top n writers in the forum I do:

User.order("total_content_length DESC").limit(n)

Now, the problem is when there are two (or more) users with the same total_content_length.
In this case, I would like to give preference to the user that created a post most recently.

Post has publisher_id field (which is a user id).

How would you do this ?

Answer 1

Try to use 2 order statements:

User.order("total_content_length DESC").order("created_at DESC").limit(n)

Try this:

class User < ActiveRecord::Base
  scope :your_scope_name, joins(:posts).order("posts.created_at DESC")
end

then you can use this scope in conjunction with other statements