error using nested attributes

I have following models

class User < ActiveRecord::Base

  belongs_to :user_type
  has_many :addresses, :as =>:addressee, :dependent => :destroy
  has_many :photos,:as => :asset,:dependent => :destroy

  accepts_nested_attributes_for :addresses, :allow_destroy => true
  accepts_nested_attributes_for :photos, :allow_destroy => true

class Photo < ActiveRecord::Base

  belongs_to :asset, :polymorphic => true

  validates_attachment_presence :photo unless :photo
  validates_attachment_content_type :photo, :content_type =>
['image/jpeg', 'image/jpg', 'image/gif', 'image/png', 'image/bmp']
unless :photo
  attr_accessor :photo

  # Paperclip
  has_attached_file :photo, :styles => { :medium => "300x300>", :thumb
=> "100x100>" }

class Address < ActiveRecord::Base

  belongs_to :addressee, :polymorphic => true

  validates_presence_of :Address1, :maximum => 50
  validates_presence_of :City
  validates_presence_of :State
  validates_presence_of :ZipCode
  validates_presence_of :Country

i have one form having combination of all this field if i hit submit
button without adding any data it show all validation from users
addresses model but not showing photo model validations & hiding photo
field from UI
not getting how this is happening? i am using nested attributes

here is my form

<div align="center">
<h1>Sign up as a new user</h1>
<%= error_messages_for :user %>
<% @user.password = @user.password_confirmation = nil %>
<% form_for @user,:url => users_path,:html => { :multipart => true } do

f> -%>

  <%= f.hidden_field :user_type_id,:value=>'2' %>
  <p><%= f.label :login %><br/><%= f.text_field :login %></p>
  <p><%= f.label :email %><br/><%= f.text_field :email %></p>
  <p><%= f.label :password %><br/><%= f.password_field :password %></p>
  <p><%= f.label :password_confirmation, 'Confirm Password' %><br/>
<%= f.password_field :password_confirmation %></p>
  <p><%= f.label :firstname %><br/><%= f.text_field :firstname %></p>
  <p><%= f.label :lastname %><br/><%= f.text_field :lastname %></p>
  <p><%= f.label :phone %><br/><%= f.text_field :phone %></p>
  <% f.fields_for :photos do |fp| %>
     <p><%= fp.label :photo%><br/><%= fp.file_field :photo%></p>
  <% end %>
<% f.fields_for :addresses do |fa| %>
      <p><%=fa.label :address_1 %><br/><%=fa.text_area :Address1,:cols
=> 30,:rows => 3 %></p>
    <p><%=fa.label :address_2 %><br/><%=fa.text_area :Address2,:cols =>
30,:rows => 3 %></p>
    <p><%=fa.label :City %><br/><%=fa.text_field :City %></p>
    <p><%=fa.label :State %><br/><%=fa.text_field :State %></p>
    <p><%=fa.label :zip_code %><br/><%=fa.text_field :ZipCode %></p>
    <p><%=fa.label :Country %><br/><%=fa.text_field :Country %></p>
  <% end %>

  <p><%= submit_tag 'Sign up' %></p>
<% end -%>

in controller

def new
    @user =

  #Create new user.
  def create
    @user =[:user])
      flash[:notice] = "Thanks for signing up! We're sending you an
email with your activation code."
      flash[:error] = "Sorry!! There was an error while setting up the
account. Please try again, or contact our admin ("
      render :action => 'new'

anybody have any idea on it?

Sunny Bogawat wrote: