[1.8.x] Fixed #25019 -- Added UUID support in DjangoJSONEncoder

Backport of 6355a6d4f5 and 2e05ef4e18 from master.

django/core/serializers/json.py

@@ -8,6 +8,7 @@ from __future__ import absolute_import, unicode_literals
 import datetime
 import decimal
 import json
+import uuid
 import sys
 
 from django.core.serializers.base import DeserializationError
@@ -86,7 +87,7 @@ def Deserializer(stream_or_string, **options):
 
 class DjangoJSONEncoder(json.JSONEncoder):
     """
-    JSONEncoder subclass that knows how to encode date/time and decimal types.
+    JSONEncoder subclass that knows how to encode date/time, decimal types and UUIDs.
     """
     def default(self, o):
         # See "Date Time String Format" in the ECMA-262 specification.
@@ -108,6 +109,8 @@ class DjangoJSONEncoder(json.JSONEncoder):
             return r
         elif isinstance(o, decimal.Decimal):
             return str(o)
+        elif isinstance(o, uuid.UUID):
+            return str(o)
         else:
             return super(DjangoJSONEncoder, self).default(o)
 

docs/releases/1.8.4.txt

@@ -9,4 +9,5 @@ Django 1.8.4 fixes several bugs in 1.8.3.
 Bugfixes
 ========
 
-* ...
+* Added the ability to serialize values from the newly added
+  :class:`~django.db.models.UUIDField` (:ticket:`25019`).

tests/httpwrappers/tests.py

@@ -6,6 +6,7 @@ import json
 import os
 import pickle
 import unittest
+import uuid
 
 from django.core.exceptions import SuspiciousOperation
 from django.core.serializers.json import DjangoJSONEncoder
@@ -480,6 +481,11 @@ class JsonResponseTests(TestCase):
         response = JsonResponse(['foo', 'bar'], safe=False)
         self.assertEqual(json.loads(response.content.decode()), ['foo', 'bar'])
 
+    def test_json_response_uuid(self):
+        u = uuid.uuid4()
+        response = JsonResponse(u, safe=False)
+        self.assertEqual(json.loads(response.content.decode()), str(u))
+
     def test_json_response_custom_encoder(self):
         class CustomDjangoJSONEncoder(DjangoJSONEncoder):
             def encode(self, o):