custom error message for Rails build-in validation helper

Question

If I have a model like:

class Person < ActiveRecord::Base 
   validates_presence_of :name, :login, :email 
end

In the view form, if I leave say email empty and submit the form the error message by Rails will be :

email can't be blank.

I am wondering, how can I customize this error message for Rails build-in validation helpers?

I mean I would like :name , :login field use the default error message, but only want :email raise the message like " You have to provide email address " . How to achieve this?

I am using Rails v2.3.2

Answer 1

Custom error message (default is: "can't be blank").

class Person < ActiveRecord::Base 
   validates_presence_of :name, :login
   validates_presence_of :email, :message => 'your custom messages'
end

http://railsapi.com/doc/v2.3.2/classes/ActiveRecord/Validations/ClassMethods.html#M001871