Fix method overloading

djangorestframework/mixins.py

@@ -94,4 +94,4 @@ class MetadataMixin(object):
         #     for name, field in form.fields.iteritems():
         #         field_name_types[name] = field.__class__.__name__
         #     content['fields'] = field_name_types
-        raise Response(content, status=status.HTTP_200_OK)
+        return Response(content, status=status.HTTP_200_OK)

djangorestframework/request.py

@@ -211,16 +211,18 @@ class Request(object):
         # Method overloading - change the method and remove the param from the content.
         if (self._METHOD_PARAM and
             self._METHOD_PARAM in self._data):
-            # NOTE: `pop` on a `QueryDict` returns a list of values.
-            self._method = self._data.pop(self._METHOD_PARAM)[0].upper()
+            self._method = self._data[self._METHOD_PARAM].upper()
+            self._data.pop(self._METHOD_PARAM)
 
         # Content overloading - modify the content type, and re-parse.
         if (self._CONTENT_PARAM and
             self._CONTENTTYPE_PARAM and
             self._CONTENT_PARAM in self._data and
             self._CONTENTTYPE_PARAM in self._data):
-            self._content_type = self._data.pop(self._CONTENTTYPE_PARAM)[0]
-            self._stream = StringIO(self._data.pop(self._CONTENT_PARAM)[0])
+            self._content_type = self._data[self._CONTENTTYPE_PARAM]
+            self._stream = StringIO(self._data[self._CONTENT_PARAM])
+            self._data.pop(self._CONTENTTYPE_PARAM)
+            self._data.pop(self._CONTENT_PARAM)
             self._data, self._files = self._parse()
 
     def _parse(self):