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\')

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Answer 1

According to this post (from last month) and this post (from 2008), it doesn't seem to be possible. However, the latter post does have code for a workaround (copy/paste'd from that link for your convenience, credit goes to DEfusion in the second link)

class C < ActiveRecord::Base
    belongs_to :B

    after_create :increment_A_counter_cache
    after_destroy :decrement_A_counter_cache

    private

    def increment_A_counter_cache
        A.increment_counter( 'c_count', self.B.A.id )
    end

    def decrement_A_counter_cache
        A.decrement_counter( 'c_count', self.B.A.id )
    end
end

(This is for a scheme where C belongs_to B, B belongs_to A, A has_many C :through => B