Naive implementation of a file upload

app/controllers/application.rb

@@ -71,7 +71,7 @@ class ApplicationController < ActionController::Base
     not @web_name.nil?
   end
 
-  @@REMEMBER_NOT = ['locked', 'save']
+  @@REMEMBER_NOT = ['locked', 'save', 'back']
   def remember_location
     if @response.headers['Status'] == '200 OK'
       unless @@REMEMBER_NOT.include? action_name or @request.method != :get

app/controllers/file_controller.rb

@@ -7,14 +7,24 @@ class FileController < ApplicationController
   layout 'default'
 
   def file
-    if have_file?
+    if @params['file']
+      # received a file
+      File.open(file_name) { |f| f.write(@params['file'].read }
+      
+    elsif have_file?
       send_file(file_path)
     else
       logger.debug("File not found: #{file_path}")
-      # to template, which is a file upload form
+      # go to the template, which is a file upload form
     end
   end
 
+  def cancel_upload
+    return_to_last_remembered
+  end
+  
+  def 
+  
   private
 
   def have_file?