Create a key by default if none is specified

djangorestframework/tests/authentication.py

@@ -146,3 +146,8 @@ class TokenAuthTests(TestCase):
         """Ensure POSTing json over token auth without correct credentials fails"""
         response = self.csrf_client.post('/', json.dumps({'example': 'example'}), 'application/json')
         self.assertEqual(response.status_code, 403)
+
+    def test_token_has_auto_assigned_key_if_none_provided(self):
+        """Ensure creating a token with no key will auto-assign a key"""
+        token = Token.objects.create(user=self.user)
+        self.assertEqual(len(token.key), 32)

djangorestframework/tokenauth/models.py

+import uuid
 from django.db import models
 
 class BaseToken(models.Model):
     """
     The base abstract authorization token model class.
     """
-    key = models.CharField(max_length=32, primary_key=True)
+    key = models.CharField(max_length=32, primary_key=True, blank=True)
     user = models.ForeignKey('auth.User')
     revoked = models.BooleanField(default=False)
 
     class Meta:
         abstract=True
 
+    def save(self, *args, **kwargs):
+        if not self.key:
+            self.key = uuid.uuid4().hex
+        return super(BaseToken, self).save(*args, **kwargs)
+
 
 class Token(BaseToken):
     """