In Rails 3, how can I skip validation of the password field when I'm not attempting to update the password?

Question

My User model contains :name, :email, and :password fields. All 3 have validations for length. An \"update account\" web page allows the user to update his name and email

Answer 1

In your user model, you could just ignore the password validation if it's not set.

validates_length_of :password, :minimum => N, :unless => lambda {|u| u.password.nil? }