Custom error messages in rails 3

Question

I have the following validation. I am using the new sintaxis of Ruby on Rails, where can be declared many validations to a same attribute, but I need a custom error message for each validation

validates :user_name, presence: true, uniqueness: true


  for example  validates_presence_of :user_name, message: "Can not be empty"
               validates_uniqueness_of :user_name, message: "Must to be unique"

Answer 1

有关示例，请参阅文档：

validates :user_name, uniqueness: { message: "Must to be unique" }