def obj_create(self, bundle, request, **kwargs):
form = GetPermissionToken(bundle.data)
if not form.is_valid():
raise self.form_errors(form)
paypal = Client()
result = paypal.get_permission_token(*form.args())
seller = form.cleaned_data['seller']
seller.token = result['token']
seller.secret = result['secret']
seller.save()
bundle.obj = seller
return bundle
