NoMethodError - Ruby on Rails

edit.html.erb

<!-- Someone can visit http://localhost:3000/profiles/my-permalink and this page will display (this part is working fine!). -->
<h2>Edit your profile, <%= @user.first_name %>.</h2>
<%= form_for @user, :html => { :class => "form-horizontal"} do |f| %>
  <%= f.label :first_name, "Your First Name" %>
  <%= f.text_field :first_name %>
  <%= f.submit "Update Profile" %>
<% end %>

profile.rb

# My profiles Model 

class Profile < ActiveRecord::Base
  belongs_to :user
end

profiles_controller.rb

class ProfilesController < ApplicationController
  def index
		@profile = Profile.find_by_permalink params[:id]
	end

	def show
		@profile = Profile.find_by_permalink params[:id]
		@user = @profile.user
	end

	def edit
		@profile = Profile.find_by_permalink params[:id]
		@user = @profile.user
	end

	def update
		@profile = Profile.find_by_permalink params[:id]
		@user = @profile.user
    
    if @user.update_attributes(params[:user])
      redirect_to profiles_path, :notice => "Your account was successfully updated!"
    else
      render "new"
    end
	end

	def destroy

	end
end

user.rb

# My users model 

class User < ActiveRecord::Base
  acts_as_authentic
	has_one :profile
	after_create :create_the_profile

	def create_the_profile
		Profile.create(:user_id => id, :permalink => "2253" + id.to_s)
	end
end

users_controller.rb

# This is my UsersController, which acts as my user platform for my application. It is there simply to store/hold the users information, and the model acts as the authentication system (AuthLogic). You are not meant to be able to access anything from the /users/ directory - it's simply a gateway! 

class UsersController < ApplicationController
  def index
		@users = User.all
	end

	def new
		@user = User.new
	end

	def create
		@user = User.new(params[:user])
		if @user.save
			flash[:success] = "Registration successful!"
			redirect_to profiles_path
		else
			render :action => "new"
		end
	end

	def edit
		@user = current_user
	end

	def update
		@profile = Profile.find_by_permalink params[:id]
		@user = @profile.user
		if @user.update_attributes(params[:user])
			flash[:success] = "The user has been updated!"
			redirect_to profiles_path
		else
			render :action => "edit"
		end
	end
end