枚举验证不起作用

Question

我的用户模型看起来与此类似：

class User < ActiveRecord::Base 
    enum type: [:admin, :reviewer, :super_admin ] 
    validates :type, presence: true 
    validates :type, inclusion: { in: User.types.keys } 
end 

当我枚举值以外的任何提交，验证不停止运行的代码，我得到一个500错误与下面的错误响应：

'something submitted' is not a valid type 

如果我提出一个空白的领域，验证工作：

"type": [ 
    "can't be blank", 
    "is not included in the list" 
] 

我在做什么错？我的代码看起来与this answer

Answer 1

Rails enum doesn't have in-built validation.

The current focus of AR enums is to map a set of states (labels) to an integer for performance reasons. Currently assigning a wrong state is considered an application level error and not a user input error. That's why you get an ArgumentError.

您仍然可以设置nil或空字符串到enum属性而不产生错误。