undefined method `original_filename' for nil:NilClass

Hi, although I saw this problem in other blogs, I couldn’t make it works.

My view:

<%= semantic_form_for :routes_status_race, :url => status_race_admin_routes_path do |f| %>

** <% contact_array = Contact.all.map {|contact| [contact.name, contact.id]}%>**

** <% route_importer_array = RouteImporter.all.map {|importer| [importer.name, importer.id]}%>**

** <%= f.inputs do%>**

** <%= f.input :contact, :as => :select, :collection => Contact.all %>**

** <%= f.input :route_import, :as => :select, :collection => RouteImporter.all %>**

** <%= f.input :uploaded_data, :action => :status_race, :multipart => true, :as => :file %>**

** <%end%>**

** **

<%end%>

My controller:

collection_action :status_race, :method => :post do

** uploaded_io = params[:uploaded_data].original_filename**

** File.open(Rails.root.join(‘app/importers’, ‘uploads’, uploaded_io.original_filename), ‘w’) do |file|**

** file.write(uploaded_io.read)**

** end**

** RoutesQuickcom.new.run(uploaded_io.original_filename)**

** render “status_race”**

** end**

end

I don’t know how to fix it , any help will be appreciate, thanks!

Now is solved, just in case that somebody will has the same problem, here is the solution, the view was right, I just change the controller part:

collection_action :status_race, :method => :post do

uploaded_io = params[:routes_status_race][:uploaded_data]

File.open(Rails.root.join(‘app/importers’, ‘uploads’, uploaded_io.original_filename), ‘w’) do |file|

file.write(uploaded_io.read)

end

RoutesQuickcom.new()

render "status_race"

end