Rails validation error messages, customizing the attribute name

Question

例如，如果模型具有名为“unit”的属性，但在您的视图中，您将此属性称为“单价”，但是当您进行验证时，错误消息默认为“单位”，如何将其修改为“单价”？

Answer 1

Use localization to set the "English" name of your attribute. You can set both the singular and plural names:

en:
  activerecord:
    attributes:
      product:
        unit:
          one:   Unit price
          other: Unit prices

Answer 2

I'm not sure how you can change the column name , But following is a working workaround

in your model create a virtual attribute called unit_price

something like this

attr_accessor :unit_price

validates_presence_of :unit_price, :message => "This is a custom validation message"

def before_validation
   self.unit_price = self.unit
end

cheers

sameera