带有验证不工作存在的自定义消息 [英] Custom message with validates presence of not working

问题描述

我的 User 模型包含以下内容:

My User model contains the following:

validates :password_digest, :presence => true, :message => "The password has to be 6 or     more characters long"  

def password=(password)
  self.password_digest = BCrypt::Password.create(password) if password.length >= 6
end

问题是 validates 中的 message 不起作用.我收到一个 Unknown validator: 'MessageValidator' 错误.我假设 presence 验证的工作方式是它只会检查 password_digest 是否为 nil，它会有 密码 的长度小于 6.我想要一个优雅的解决方案，就像我尝试的那样.我已经以一种方式解决了这个问题，但我真的很感激能理解为什么我正在尝试的方法不起作用，以及有没有办法让它起作用.

The issue is that the message in the validates isn't working. I get a Unknown validator: 'MessageValidator' error. I assumed the way the presence validation worked was that it would just check if the password_digest was nil, which it would be had the password had a length less than 6. I want a solution that is elegant, like what I attempted. I have solved this one way, but I would really appreciate an understanding as to why what I'm trying isn't working, and is there a way to make it work.

我的工作是:

validate do |user|
  user.errors['password'] = "can't be less than 6 characters" if user.password_digest.nil?
end

推荐答案

这是由于 validates 方法的工作方式造成的.当您指定 :message 作为传递给 validates 的哈希键时，它假定您正在查找 MessageValidator.

This is due to how the validates method works. It assumes that you're looking for the MessageValidator when you specify :message as a key in the hash passed to validates.

这可以通过如下重构查询来解决:

This can be solved by reconstructing the query as follows:

validates :password_digest, :presence => { :message => "The password has to be 6 or more characters long" }

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