Add DisallowedPingbackHost exception

apps/payment/views.py

@@ -6,7 +6,6 @@ from urllib.parse import urlsplit
 
 from django.contrib import messages
 from django.contrib.auth.decorators import login_required
-from django.core.exceptions import DisallowedHost
 from django.http import HttpResponse
 from django.shortcuts import redirect, get_object_or_404
 from django.views.generic import View, TemplateView
@@ -26,6 +25,10 @@ from .models import AuthorBalance, CoursePayment, SchoolPayment
 logger = logging.getLogger('django')
 
 
+class DisallowedPingbackHost(Exception):
+    pass
+
+
 @method_decorator(login_required, name='dispatch')
 class CourseBuySuccessView(TemplateView):
     template_name = 'payment/course_payment_success.html'
@@ -248,5 +251,5 @@ class PaymentwallCallbackView(View):
                 payment.author_balance.save()
             return HttpResponse('OK')
         else:
-            raise DisallowedHost
+            raise DisallowedPingbackHost
             return HttpResponse(status=403)