Support custom exception handler

docs/index.md

@@ -179,6 +179,7 @@ JWT_AUTH = {
 
     'JWT_AUTH_HEADER_PREFIX': 'JWT',
     'JWT_AUTH_COOKIE': None,
+    'JWT_SERIALIZER_RAISE_EXCEPTION': False,
 
 }
 ```
@@ -292,6 +293,11 @@ procedure will also look into this cookie, if set. The 'Authorization' header ta
 
 Default is `None` and no cookie is set when creating tokens nor accepted when validating them.
 
+### JWT_SERIALIZER_RAISE_EXCEPTION
+If you have implemented custom exception handling as described in [django_rest_framework documentation](http://www.django-rest-framework.org/api-guide/exceptions/#custom-exception-handling) and want to have that function which converts exceptions raised in your API views into response objects.
+
+Default is 'False'
+
 ## Extending `JSONWebTokenAuthentication`
 
 Right now `JSONWebTokenAuthentication` assumes that the JWT will come in the header, or a cookie if configured (see [JWT_AUTH_COOKIE](#JWT_AUTH_COOKIE)). The JWT spec does not require this (see: [Making a service Call](https://developer.atlassian.com/static/connect/docs/concepts/authentication.html)). For example, the JWT may come in the querystring. The ability to send the JWT in the querystring is needed in cases where the user cannot set the header (for example the src element in HTML).

rest_framework_jwt/settings.py

@@ -46,6 +46,8 @@
 
     'JWT_AUTH_HEADER_PREFIX': 'JWT',
     'JWT_AUTH_COOKIE': None,
+
+    'JWT_SERIALIZER_RAISE_EXCEPTION': False,
 }
 
 # List of settings that may be in string import notation.

rest_framework_jwt/views.py

@@ -54,7 +54,7 @@ def get_serializer(self, *args, **kwargs):
     def post(self, request, *args, **kwargs):
         serializer = self.get_serializer(data=request.data)
 
-        if serializer.is_valid():
+        if serializer.is_valid(raise_exception=api_settings.JWT_SERIALIZER_RAISE_EXCEPTION):
             user = serializer.object.get('user') or request.user
             token = serializer.object.get('token')
             response_data = jwt_response_payload_handler(token, user, request)