CustomFragmentCache

CustomFragmentCache gives you a simple way for defining your own fragments cache with the ability to specify expiration according to fields.

Installation

Add this line to your application's Gemfile:

gem 'custom_fragment_cache'

And then execute:

$ bundle

Or install it yourself as:

$ gem install custom_fragment_cache

Usage

Define fragments:

Define it on ActiveRecord:

class User < ActiveRecord::Base
  include CustomFragmentCache
  
  define_cache_fragment(:full_name, trigger_fields: %w(first_name last_name)) # When one of the trigger fields will be changed it will expire the cache
  define_cache_fragment(:full_name, safe_fields: %w(id created_at updated_at)) # When one of the none safe fields will be changed it will expire the cache
end

You can also define it on ActiveRecord::Observer

class UserCache < ActiveRecord::Observer
  include CustomFragmentCache
  observe :user

  define_cache_fragment(:full_name, trigger_fields: %w(first_name last_name))
end

Use cache on the view:

Use custom_cache instead of cache

<p>
  <span>Hello </span>
  <span><% custom_cache(User.first, :full_name) { "#{User.first.first_name} #{User.first.last_name}" } %></span>
</p>

Jbuilder support

json.custom_cache!(user, :full_name) do
  json.first_name user.first_name
  json.last_name user.last_name
end

Contributing

1. Fork it ( http://github.com//custom_fragment_cache/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request