Question

why every time that i retrieve an existent User and try to update its email, ruby throws an exception claiming for its password.

anyone got the same issue?

UserModel

    attr_accessible   :nome, :sobrenome, :email, :email_confirmation, :password, :password_confirmation, :genero,
                    :endereco, :numero, :bairro, :complemento, :cidade, :estado, :cep



  has_secure_password

  before_create {generate_token(:auth_token)}

  attr_accessor :password
 email_regex = /^([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})$/i



  validates_presence_of :nome, :sobrenome, :genero, :email, :password, :on => :create 


  validates :email, :format => {:with => email_regex},
                    :uniqueness => {:case_sensitive => false }


  validates :password, :length => {:within=> 6..60},
                       :confirmation => true


  validates :email, :confirmation => true,
                    :on => :update

Answer 1

Here it is how i handled this problem.

validates_presence_of :password,  :on => :create

 validates :password, :length => {:within=> 6..60},
                       :confirmation => true,
                       :if => :is_password_validation_needed?

private 

       def is_password_validation_needed? 
         new_record? || password
       end