Rails decorator delegation with method missing

delegating_decorator.rb

    class << self
      def method_missing(method, *args)
        result = (method == :all) ? Account.scoped : Account.send(method, *args)
        result.where(something: true).map { |a| self.new a }

      rescue NoMethodError => e
        if result.is_a? ActiveRecord::Relation
          raise e
        else
          raise NoMethodError.new "Account.#{ method } did not return a relation", method, args
        end
      end
    end