A Ruby on Rails plug-in that provides a mechanism for ActiveRecord Models to ignore the default_scope of a belongs_to association.
In your Gemfile
gem 'ignore_default_scope', :git => 'git://github.com/mattfreer/ignore_default_scope.git'You can instruct an ActiveRecord Model to ignore the default_scope of a belongs_to association like this:
class Project < ActiveRecord::Base
belongs_to :creator, :class_name => "User"
ignore_default_scope :creator
end
class User < ActiveRecord::Base
has_many :projects, :foreign_key => "creator_id"
default_scope where(:deleted_at => nil)
endIn the above mock scenario Projects are created by Users, who can be archived (soft-deleted). In general, archived Users are not relevant to our application, hence a default_scope is applied to Users, which filters out archived records. However Projects and their creators need to be readable, regardless of whether the creator is archived. The solution being to instruct Projects to ignore_default_scope of creators.
Ignoring the default_scope of Polymorphic belongs_to relations works too, as demonstrated in following example:
class Comment < ActiveRecord::Base
belongs_to :author, :polymorphic => true
ignore_default_scope :author
end
class User < ActiveRecord::Base
has_many :comments, :as => :author
default_scope where(:deleted_at => nil)
end
class Customer < ActiveRecord::Base
has_many :comments, :as => :author
default_scope where(:deleted_at => nil)
endIn the above mock scenario Comments can be created by Users or Customers. Both Users and Customers can be archived. Comments and their authors need to be readable, regardless of whether the author is archived.
This gem supports Rails 3.1.1 and above.
Copyright © 2013 Matt Freer, released under the MIT license