Using a nested-model form as a partial on a page

Hello, I have a nested model form for PhotoAlbums. The form works fine via the standard html. But what I need to do is render it as a partial in another page it's erroring: "No route matches {:action=>"create", :controller=>"photo_albums"}"

The models:

Projects   has_many :photo_albums

PhotoAlbums   belongs_to :project   has_many :photos

Photos   belongs_to :photo_album

Controller:   def create     @project = Project.find(params[:project_id])     @photoalbum = PhotoAlbum.create(params[:photo_album])   end

Here is the working form which loads and works find via HTML:

<% form_for [:project, @photoalbum], :html => { :multipart => true } do |f| %>   <div class="field">       <%= f.label :title %><br />     <%= f.text_field :title %>   </div>

  <% f.fields_for :photos do |builder| %>     <% if builder.object.new_record? %>       <%= builder.label :photo, "photo File" %>       <%= builder.file_field :photo %>     <% end %>   <% end %>

<% end %>

The issue I'm having, is that to render this form as a partial in a view in another page. I'm using the following:

   <% @photoalbum = %>    <%= render :partial => "photo_albums/form", :locals => {:photoalbum => @photoalbum} %>

I checked by Rake Routes, And I do have it there: project_photo_albums POST /projects/:project_id/ photo_albums(.:format) {:controller=>"photo_albums", :action=>"create"}

Thoughts? thank you