Allow nesting of dict subtypes

marshmallow-code · Mar 4, 2015 · 4552f23 · 4552f23
1 parent 708d440
commit 4552f23
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Showing 3 changed files with 12 additions and 1 deletion.
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
@@ -1,6 +1,13 @@
 Changelog
 ---------
 
+0.11.1 (unreleased)
+*******************
+
+Changes:
+
+* Allow nesting of dict subtypes.
+
 0.11.0 (2015-03-01)
 *******************
 

diff --git a/tests/test_core.py b/tests/test_core.py
@@ -194,6 +194,10 @@ def test_nested_argdict_has_type_dict(self):
 
         assert 'Expected type "object" for myarg, got "string"' in str(excinfo)
 
+    def test_nested_argdict_can_be_a_dict_subclass(self):
+        arg = Arg(DjMultiDict({'foo': Arg()}))
+        assert arg.type == DjMultiDict
+
     def test_has_nesting(self):
         arg = Arg({'foo': Arg()})
         assert arg._has_nesting is True

diff --git a/webargs/core.py b/webargs/core.py
@@ -175,7 +175,7 @@ def __init__(self, type_=None, default=None, required=False,
                  validate=None, use=None, multiple=False, error=None,
                  allow_missing=False, location=None, dest=None, source=None, **metadata):
         if isinstance(type_, dict):
-            self.type = dict
+            self.type = type(type_)  # type will always be a dict
             self._nested_args = type_
             self._has_nesting = True
         else: