use django auth for subscription creation page

subscription/tests/test_new_susbcription.py

@@ -5,6 +5,7 @@ from typing import Callable
 
 import pytest
 from dateutil.relativedelta import relativedelta
+from django.contrib.auth.models import Permission
 from django.test import Client
 from django.urls import reverse
 from django.utils.timezone import localdate
@@ -108,7 +109,12 @@ def test_page_access(
 
 @pytest.mark.django_db
 def test_submit_form_existing_user(client: Client, settings: SettingsWrapper):
-    client.force_login(board_user.make())
+    client.force_login(
+        baker.make(
+            User,
+            user_permissions=Permission.objects.filter(codename="add_subscription"),
+        )
+    )
     user = old_subscriber_user.make()
     response = client.post(
         reverse("subscription:fragment-existing-user"),
@@ -133,7 +139,12 @@ def test_submit_form_existing_user(client: Client, settings: SettingsWrapper):
 
 @pytest.mark.django_db
 def test_submit_form_new_user(client: Client, settings: SettingsWrapper):
-    client.force_login(board_user.make())
+    client.force_login(
+        baker.make(
+            User,
+            user_permissions=Permission.objects.filter(codename="add_subscription"),
+        )
+    )
     response = client.post(
         reverse("subscription:fragment-new-user"),
         {

subscription/views.py

@@ -14,7 +14,7 @@
 #
 
 from django.conf import settings
-from django.contrib.auth.mixins import UserPassesTestMixin
+from django.contrib.auth.mixins import PermissionRequiredMixin
 from django.core.exceptions import PermissionDenied
 from django.urls import reverse, reverse_lazy
 from django.utils.timezone import localdate
@@ -30,13 +30,9 @@ from subscription.forms import (
 from subscription.models import Subscription
 
 
-class CanCreateSubscriptionMixin(UserPassesTestMixin):
-    def test_func(self):
-        return self.request.user.can_create_subscription
-
-
-class NewSubscription(CanCreateSubscriptionMixin, TemplateView):
+class NewSubscription(PermissionRequiredMixin, TemplateView):
     template_name = "subscription/subscription.jinja"
+    permission_required = "subscription.add_subscription"
 
     def get_context_data(self, **kwargs):
         return super().get_context_data(**kwargs) | {
@@ -49,8 +45,9 @@ class NewSubscription(CanCreateSubscriptionMixin, TemplateView):
         }
 
 
-class CreateSubscriptionFragment(CanCreateSubscriptionMixin, CreateView):
+class CreateSubscriptionFragment(PermissionRequiredMixin, CreateView):
     template_name = "subscription/fragments/creation_form.jinja"
+    permission_required = "subscription.add_subscription"
 
     def get_success_url(self):
         return reverse(
@@ -72,8 +69,9 @@ class CreateSubscriptionNewUserFragment(CreateSubscriptionFragment):
     extra_context = {"post_url": reverse_lazy("subscription:fragment-new-user")}
 
 
-class SubscriptionCreatedFragment(CanCreateSubscriptionMixin, DetailView):
+class SubscriptionCreatedFragment(PermissionRequiredMixin, DetailView):
     template_name = "subscription/fragments/creation_success.jinja"
+    permission_required = "subscription.add_subscription"
     model = Subscription
     pk_url_kwarg = "subscription_id"
     context_object_name = "subscription"