[Rails] counter_cache for has_many through associations

Ruby on Rails Saturday, January 10, 2015

class User < ActiveRecord::Base
  has_many :likes
  has_many :liked_things, :through => :likes
end

class Thing < ActiveRecord::Base
  has_many :likes
  has_many :liked_by_users, :through => :likes
end

class Like < ActiveRecord::Base
  belongs_to :user
  belongs_to :shot
end

This is my setup, and I have a `likes_count` column on Things Table. Is there any way to keep that count updating using counter_cache ? I got it working counter_cache on has_many association but failing to do same with has_many through association.


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Posted by Ruby on Rails at 10:53 AM

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