Creating users with a profile that has an address association all at once

new.html.erb

<h2>Sign up</h2>

<%= form_for(resource, :as => resource_name, :url => registration_path(resource_name)) do |f| %>
  <%= devise_error_messages! %>

  <p><%= f.label :email %><br />
  <%= f.email_field :email, :required => true %></p>

  <p><%= f.label :password %><br />
  <%= f.password_field :password, :required => true %></p>

  <p><%= f.label :password_confirmation %><br />
  <%= f.password_field :password_confirmation, :required => true %></p>

  <%= f.fields_for :profile do |profile_fields| %><br />
  <p><i>This is required</i><%= profile_fields.text_field :name, :required => true %></p>
<% end %>
  <p><%= f.submit "Sign up" %></p>
<% end %>

<%= render :partial => "devise/shared/links" %>

Trial-of-device.rb

########User Models#########
class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :token_authenticatable, :confirmable, :lockable and :timeoutable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable; :omniauthable

  # Setup accessible (or protected) attributes for your model
  attr_accessible :email, :password, :password_confirmation, :remember_me

  has_one :profile, :dependent => :destroy
  accepts_nested_attributes_for :profile, :allow_destroy => true
end

#############Profile Model####
class Profile < ActiveRecord::Base
  belongs_to :user
  has_one :address, :dependent => :destroy
  accepts_nested_attributes_for :address, :allow_destroy => true
  has_attached_file :avatar, :styles => {:medium => "300x600>", :thumb => "221x272>"}
  has_many :photos
end

########Address Model############
class Address < ActiveRecord::Base
  belongs_to :profile
end


######CONTROLLERS#########
class RegistrationsController < Devise::RegistrationsController
  before_filter :authenticate_user!
  
def new
    super
    #@user = User.new
    @user.profiles.build.addresses.build

    respond_to do |format|
      format.html # new.html.erb
      format.xml { render :xml => @user }
    end
  end

  # POST /users
  # POST /users.xml
  def create
    @user = User.new(params[:user])

    respond_to do |format|
      if @user.save
        format.html { redirect_to(@user) }
        format.xml  { render :xml => @user, :status => :created, :location => @user }
      else
        format.html { render :action => "new" }
        format.xml  { render :xml => @user.errors, :status => :unprocessable_entity }
      end
    end
  end

###SCHEMA
  create_table "addresses", :force => true do |t|
    t.string "city"
    t.string "region"
    t.string "postcode"
    t.string "country"
    t.datetime "created_at"
    t.datetime "updated_at"
    t.integer "profile_id"
  end

  create_table "profiles", :force => true do |t|
    t.string "name"
    t.datetime "created_at"
    t.datetime "updated_at"
    t.integer "user_id"
  end

#QUESTION

I want to auto create a profile for every user that signs_up. The profile has an address. The user is created but not the profile and address. i think am failing to pass some fields with the builder. How do i do that?

#Registration View

<h2>Sign up</h2>

<%= form_for(resource, :as => resource_name, :url => registration_path(resource_name)) do |f| %>
<%= devise_error_messages! %>

<p><%= f.label :email %><br />
  <%= f.email_field :email, :required => true %></p>

  <p><%= f.label :password %><br />
<%= f.password_field :password, :required => true %></p>

  <p><%= f.label :password_confirmation %><br />
<%= f.password_field :password_confirmation, :required => true %></p>

  <p><%= f.submit "Sign up" %></p>
<% end %>

<%= render :partial => "devise/shared/links" %>