counter_cache with has_many :through

Question

I just created a counter_cache field and the controller looks like this.

 @users = User.where(:sex => 2).order(\'received_likes_count\')

<

Answer 1

This basically does the same thing:

after_save :cache_post_count_on_tags

def cache_post_count_on_tags
  tags.each {|t| tag.update_attribute(:posts_count, t.posts.size)}
end

And you need a posts_count column on tags, or whatever associations you have.