snippet.html

<h1>New post</h1>
<% @post.photos.build if @post.photos.empty? %> 
<% form_for(@post) do |f| %>
  <%= f.error_messages %>

  <p>
    <%= f.label :name %><br />
    <%= f.text_field :name %>
  </p>
  <p>
    <%= f.label :content %><br />
    <%= f.text_area :content %>
  </p>
	
 <!-- :photos is a model that has paperclip on it. 
  I can use :image with the photomodel and it's action, but when trying to do a nested form
  everything in Post.photos is nil except the timestamp -->
	
 <% f.fields_for :photos, :html => { :multipart => true } do |picture| %>  
  <%= picture.label :image %>
  <%= picture.file_field :image %>
		<% end %> 
  <p>
    <%= f.submit 'Create' %>
  </p>
<% end %>

<%= link_to 'Back', posts_path %>