# File lib/dragonfly/active_model_extensions/attachment.rb, line 15
      def initialize(app, parent_model, attribute_name)
        @app, @parent_model, @attribute_name = app, parent_model, attribute_name
        self.extend app.analyser.analysis_methods
        self.extend app.job_definitions
        self.uid = parent_uid
        self.job = app.fetch(uid) if uid
      end