Devise: Disable password confirmation during sign-up

Question

I am using Devise for Rails. In the default registration process, Devise requires users to type the password twice for validation and authentication. How can I disable it?

Answer 1

Devise's default validations (lib/devise/models/validatable.rb):

validates_confirmation_of :password, :if => :password_required?

and method:

def password_required?
  !persisted? || !password.nil? || !password_confirmation.nil?
end

We need override Devise default password validation. Put the following code at the end in order for it not to be overridden by any of Devise's own settings.

validates_confirmation_of :password, if: :revalid
def revalid
  false
end

And your model would look like this:

class User < ActiveRecord::Base      
  devise :database_authenticatable, :registerable,
     :recoverable, :rememberable, :trackable,
     :confirmable, :timeoutable, :validatable

  validates_confirmation_of :password, if: :revalid

  def revalid
    false
  end
end

Then remove the password_confirmation field from the registration form.