Rails counter_cache not updating correctly

Question

Using Rails 3.1.3 and I\'m trying to figure out why our counter caches aren\'t being updated correctly when changing the parent record id via update_attributes.

Answer 1

If your counter has been corrupted or you've modified it directly by SQL, you can fix it.

Using:

ModelName.reset_counters(id_of_the_object_having_corrupted_count, one_or_many_counters)

Example 1: Re-compute the cached count on the post with id = 17.

Post.reset_counters(17, :comments)

Source

Example 2: Re-compute the cached count on all your articles.

Article.ids.each { |id| Article.reset_counters(id, :comments) }