really merge rails3.1 fix for the middleware

Author: Sammy Larbi

lib/app/middleware/plupload_params_renamer.rb

@@ -1,2 +1,35 @@
+require 'action_dispatch/http/request'
+module ActionDispatch
+  class PluploadParamsRenamer
+    def initialize(app)
+      @app = app
+    end
+   
+    def call(env)
+      req = Rack::Request.new(env)
+      if req.POST["_plupload_upload"]
+        object, method = req.params["_plupload_upload"].split(/[\[\]]/)
+        submethod =  req.params["_plupload_upload"].split(/[\[\]]/)[-1]
+        req.params[object] ||= {} 
+        if req.POST["_plupload_files"]
+          req.params[object][method] = []
+          req.POST["_plupload_files"].each_with_index do |file, i|
+            plupload_temp_path = "tmp/plupload-rails3/#{File.basename(file)}"
+            FileUtils.mv(plupload_temp_path, file)
+
+            original_filename = req.POST["_plupload_original_names"][i]
+            content_type = req.POST["_plupload_content_types"][i]
+
+            uploaded_file = ActionDispatch::Http::UploadedFile.new(:tempfile=>File.new(file), :content_type=>content_type, :filename=>original_filename)
+
+            req.params[object][method] << {submethod=>uploaded_file}
+          end
+        else
+          req.params[object][method] = req.params["file"] 
+        end
+      end 
+
+      @app.call(env)
+    end
   end
 end