Question

I’m using the acts_as_follower gem, and I’m wondering how can I order my users by the number of followers they have? I’m not really sure where to start with this.

Answer 1

If user acts_as_followable:

User.all.sort_by(&:followers_count)

---

Per Benedikt Deicke’s comment below, this solution results in N+1 queries. To prevent this situation, enable eager loading of followings for all User queries.

# models/user.rb    
class User < ActiveRecord::Base
  acts_as_followable
  default_scope :include => :followings
  # ...
end