Ticket #4317: fields.diff

django/newforms/fields.py

@@ -489 +489 @@
         super(SplitDateTimeField, self).__init__(fields, *args, **kwargs)
 
     def compress(self, data_list):
-        if data_list:
+        d,t = tuple(data_list)
+        error,empty = False,False
+        if d in EMPTY_VALUES:
+            if t not in EMPTY_VALUES:
+                error = True
+            else:
+                empty = True
+        elif t in EMPTY_VALUES:
+            error = True
+
+        if error:
+            raise ValidationError(gettext(u'Please enter both a date and a time.'))
+        if not empty:
             return datetime.datetime.combine(*data_list)
         return None