module Devise::Models::DatabaseAuthenticatable

end
super(params)
params.delete(:email)
def update_without_password(params={})

Example:

attributes you would not like to be updated without a password.
method, you should probably override this method to protect other
Never allows a change to the current password. If you are using this
Updates record attributes without asking for the current password.

def update_without_password(params, *options)
  params.delete(:password)
  params.delete(:password_confirmation)
  result = update_attributes(params, *options)
  clean_up_passwords
  result
end