python - Adding custom response Headers to APIException -

i have created custom exception referring http://django-rest-framework.org/api-guide/exceptions.html.

please know have own authentication backend. hence not using rest_framework's authentication module.

for authentication errors, want add 'www-authenticate: token' header response sent exception.

any ideas helpful.

update:

thanks @pathétique, ended doing.

-have base view class named baseview.

-override handle_exception method set appropriate headers, in case 'www-authenticate'.

here code:

class baseview(apiview):   def handle_exception(self, exc):      if isinstance(exc, myexception):         self.headers['www-authenticate'] = "token"         return response({'detail': exc.detail,                         status=exc.status_code, exception=true) 

your thoughts?

try overriding finalize_response in rest framework view:

def finalize_response(self, request, *args, **kwargs):     response = super(someapiview, self).finalize_response(request, *args, **kwargs)     response['www-authenticate'] = 'token'     return response 

edit:

after seeing update, think override of handle_exception should work, add else statement call parent method cover other exceptions. 1 thing noticed in overriding dispatch, may not issue here, setting new key/value self.headers resulted in server error didn't take time track down. anyways, seems on right track.