Errors during deserializing lists now return a list of tuples with

index of bad item in data plus usual errors dict

1 files changed, 12 insertions, 5 deletions

diff --git a/rest_framework/serializers.py b/rest_framework/serializers.py
index ba9e9e9c..80287522 100644
--- a/rest_framework/serializers.py
+++ b/rest_framework/serializers.py
@@ -286,8 +286,18 @@ class BaseSerializer(Field):
         Deserialize primitives -> objects.
         """
         if hasattr(data, '__iter__') and not isinstance(data, (dict, six.text_type)):
-            # TODO: error data when deserializing lists
-            return [self.from_native(item, None) for item in data]
+            object_list = list()
+            error_list = list()
+            for count, item in enumerate(data):
+                obj = self.from_native(item, None)
+                if self._errors:
+                    error_list.append((count, self._errors))
+                object_list.append(obj)
+            if not error_list:
+                return object_list
+
+            self._errors = error_list
+            return None
 
         self._errors = {}
         if data is not None or files is not None:
@@ -354,9 +364,6 @@ class BaseSerializer(Field):
                                   'Use the `many=True` flag when instantiating the serializer.',
                                   PendingDeprecationWarning, stacklevel=3)
 
-            # TODO: error data when deserializing lists
-            if many:
-                ret = [self.from_native(item, None) for item in data]
             ret = self.from_native(data, files)
 
             if not self._errors: