Module: Featuring::Flaggable::ClassMethods

Extended by:
Forwardable
Defined in:
lib/featuring/flaggable.rb

Instance Method Summary collapse

Instance Method Details

#inherited(object) ⇒ Object 



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# File 'lib/featuring/flaggable.rb', line 126

def inherited(object)
  # Add the feature check methods to the object's internal feature class.
  #
  object.instance_feature_class.internal_feature_checks_module.include instance_feature_class.internal_feature_checks_module

  # Because we added feature check methods above, include again to make them available.
  #
  object.instance_feature_class.include object.instance_feature_class.internal_feature_checks_module

  # Add the feature methods to the object's internal feature class.
  #
  object.instance_feature_class.internal_feature_module.include instance_feature_class.internal_feature_module
end

#instance_feature_class ⇒ Object

The internal class where feature flags for the object are defined. An instance of this class is returned when calling object.features. The object delegates all feature flag definition concerns to this internal class (see the comment above).



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# File 'lib/featuring/flaggable.rb', line 100

def instance_feature_class
  @_instance_feature_class ||= Class.new do
    extend Flaggable

    # The class is `Flaggable`, but *instances* are `Delegatable`. This lets us delegate
    # dynamically to the parent object (the object `features` is called on).
    #
    include Delegatable

    include Serializable

    def initialize(parent)
      @parent = parent
    end

    # @api private
    def feature_flags
      self.class.feature_flags
    end

    private def internal_feature_delegates_to
      @parent
    end
  end
end