Devise: Can't mass-assign protected attributes: email, name - ruby-on-rails

Question

I'm using Rails (3.2.3) and Devise, and allowing administrators to create new users – and edit user accounts.
At this point, administrators can create accounts successfully. However, they can't edit them.
When you try to edit a user's account, a mass-assignment error is raised:
Can't mass-assign protected attributes: email, name
Even though, in the User model, these attributes are set to accessible:
attr_accessible :name, :email, :password, :password_confirmation, :remember_me
What's interesting, is, if I change the above line to attr_protected, you CAN edit user information but you CANNOT create users anymore. Very weird.
Here's the relevant code I'm working with... any help is appreciated.
User model:
class User < ActiveRecord::Base
rolify
devise :database_authenticatable, :registerable,
:recoverable, :rememberable, :trackable, :validatable
attr_accessible :role_ids, :as => :admin
attr_accessible :name, :email, :password, :password_confirmation, :remember_me
end
Users controller:
class UsersController < ApplicationController
before_filter :authenticate_user!
def update
authorize! :update, #user, :message => 'Not authorized as an administrator.'
#user = User.find(params[:id])
if params[:user][:password].blank?
params[:user].delete(:password)
params[:user].delete(:password_confirmation)
end
if #user.update_attributes(params[:user], :as => :admin)
redirect_to users_path, :notice => "User updated."
else
redirect_to users_path, :alert => "Unable to update user."
end
end
def new
#user = User.new
respond_to do |format|
format.html # new.html.erb
format.json { render json: #user }
end
end
def edit
#user = User.find(params[:id])
end
def create
#user = User.new(params[:user])
if params[:user][:password].blank?
params[:user].delete(:password)
params[:user].delete(:password_confirmation)
end
respond_to do |format|
if #user.save
format.html { redirect_to users_path, notice: 'User was successfully created.' }
else
format.html { render action: "new" }
end
end
end
end

Answer 1

Change to
class User < ActiveRecord::Base
rolify
devise :database_authenticatable, :registerable,
:recoverable, :rememberable, :trackable, :validatable
attr_accessible :role_ids, :name, :email, :password, :password_confirmation, :remember_me, :as => :admin
attr_accessible :name, :email, :password, :password_confirmation, :remember_me
end
Now administrators can create accounts successfully & they CAN edit them as well. Hope it helps