counter_cache for has_many through associations

[Amit]

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.

[John Sanderbeck]

I am struggling with this as well.

What appears to be happening is that the deletes from the join table do
not fire the counter_cache update.

From what I have read, delete's do not fire events and that is the way
it is designed in Rails 4.

I have tried multiple workarounds from doing an after_save event,
putting the join table in it's own model, etc... Nothing I have done
seems to decrement the count.

Anxious to see if any Ruby experts see this post and let us know the
best way to fix this.

John

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