设计错误：＆＃34;未定义的方法`mail＆＃39;对于＆＃34;

Question

安装＆＃34; gem＆＃39;设计＆＃39;＆＃34;我收到错误消息＆＃34;未定义的方法`mail＆＃39;对于＆＃34;在sign_up函数。

def method_missing(method, *args, &block)
  if respond_to_without_attributes?(method, true)
    super
  else
    match = match_attribute_method?(method.to_s)
    match ? attribute_missing(match, *args, &block) : super
  end
end
# +attribute_missing+ is like +method_missing+, but for attributes. When
# +method_missing+ is called we check to see if there is a matching

有人有想法解决我的问题吗？