Rails ActiveRecord:验证单个属性 [英] Rails ActiveRecord: validate single attribute

问题描述

是否有一种方法可以验证 Rails 中的单个属性?

If there is a way I can validate single attribute in Rails?

类似于:

ac_object.valid?(attribute_name)

<小时>

我将使用它来对特定模型字段进行 AJAX 验证.将这些验证移至 Javascript 会使代码变得非常丑陋.

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I'm gonna use it for AJAX validation of particular model fields. Moving these validations to the Javascript makes code really ugly.

推荐答案

您可以在模型中实现自己的方法.像这样

You can implement your own method in your model. Something like this

def valid_attribute?(attribute_name)
  self.valid?
  self.errors[attribute_name].blank?
end

或者添加到ActiveRecord::Base

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