cache_depends_on

A better way of controlling cache dependencies than belongs_to :product, touch: true

class Author < ActiveRecord::Base
  has_many :artciles

  cache_depends_on :articles
end

class Artcile < ActiveRecord::Base
  belongs_to :rating

  cache_depends_on :rating
end

class Rating < ActiveRecord::Base
  has_one :article
end

CacheDependsOn can deal with any kinds of ActiveRecord associations.

...console/SQL log...

...why...

If an Author has five articles and all of them are updated within a transaction, the Author will be updated only once.

...why it is important... ...how to establish 'ideal relationships' between ActiveRecord models.

Add the following to your Gemfile:

gem 'cache_depends_on'

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

Bug reports and pull requests are welcome on GitHub at https://github.com/veeqo/cache_depends_on.

Sponsored by Veeqo