ruby-on-rails - Rails 覆盖验证消息

Question

我想在验证消息中看到无效值。

validates_uniqueness_of :event, :scope => :user_id

结果:“标题已被占用”我想:“#{user} 已接受事件 #{event}”

我正在尝试这样做，但发髻不起作用:

validates_uniqueness_of :event, :scope => :user_id, :message=>"#{self.event} already has been taken by #{self.user}"

Answer 1

来自ActiveRecord源代码注释:

The values :model, :attribute and :value are always available for interpolation The value :count is available when applicable. Can be used for pluralization.

所以你可以简单地将你的消息写成

validates_uniqueness_of :event, :scope => :user_id, 
                        :message=>"{{value}} is already taken"