# File lib/dragonfly/active_model_extensions/class_methods.rb, line 79 def dragonfly_attachment_classes @dragonfly_attachment_classes ||= begin parent_class = ancestors.select{|a| a.is_a?(Class) }[1] if parent_class.respond_to?(:dragonfly_attachment_classes) parent_class.dragonfly_attachment_classes.map do |klass| new_dragonfly_attachment_class(klass.attribute, klass.app, klass.config_block) end else [] end end end