reqparse.RequestParser.add_argument() now does accept reqparse.Argument object

Author: devunt

flask_restful/reqparse.py

@@ -194,12 +194,14 @@ def __init__(self, argument_class=Argument, namespace_class=Namespace):
         self.argument_class = argument_class
         self.namespace_class = namespace_class
 
-    def add_argument(self, *args, **kwargs):
+    def add_argument(self, name, *args, **kwargs):
         """Adds an argument to be parsed. See :class:`Argument`'s constructor
         for documentation on the available options.
         """
-
-        self.args.append(self.argument_class(*args, **kwargs))
+        if isinstance(name, self.argument_class):
+            self.args.append(name)
+        else:
+            self.args.append(self.argument_class(name, *args, **kwargs))
         return self
 
     def parse_args(self, req=None):

tests/test_reqparse.py

@@ -588,5 +588,13 @@ def test_type_filestorage(self):
             self.assertEquals(args['foo'].filename, 'baz.txt')
             self.assertEquals(args['foo'].read(), fdata)
 
+    def test_passing_arguments_object(self):
+        req = Request.from_values("/bubble?foo=bar")
+        parser = RequestParser()
+        parser.add_argument(Argument("foo", type=str))
+
+        args = parser.parse_args(req)
+        self.assertEquals(args['foo'], u"bar")
+
 if __name__ == '__main__':
     unittest.main()