For my users model, the password field cannot be the same as the
username, which is checked by the validate method in the model:
class User < ActiveRecord::Base
if password == username
errors.add(:password, "Cannot be the username")
This works fine when creating a new user. However it fails when a
user wants to change their password.
The reason it fails is that the update/edit form view does *not* let
the user change their username (usernames are static). So when the
validate method (above) is ran it does not know what the username is.
What is the rails-way for tackling this?