Update Django to 4.x

Pipfile

@@ -5,7 +5,7 @@ url = "https://pypi.python.org/simple"
 [packages]
 boto3 = "*"
 dj-database-url = "*"
-django = "==3.*"
+django = "==4.*"
 django-axes = "*"
 django-filter = "*"
 django-imagekit = "*"

babybuddy/templates/babybuddy/user_confirm_delete.html

@@ -15,7 +15,7 @@
         {% blocktrans trimmed %}
             <h1>Are you sure you want to delete <span class="text-info">{{ object }}</span>?</h1>
         {% endblocktrans %}
-        <input type="submit" value="Delete" class="btn btn-danger" />
+        <input type="submit" value="{% trans "Delete" %}" class="btn btn-danger" />
         <a href="{% url 'babybuddy:user-list' %}" class="btn btn-default">{% trans "Cancel" %}</a>
     </form>
 {% endblock %}

babybuddy/views.py

@@ -89,18 +89,16 @@ class UserUpdate(StaffOnlyMixin, PermissionRequiredMixin,
 
 
 class UserDelete(StaffOnlyMixin, PermissionRequiredMixin,
-                 DeleteView):
+                 DeleteView, SuccessMessageMixin):
     model = User
     template_name = 'babybuddy/user_confirm_delete.html'
     permission_required = ('admin.delete_user',)
     success_url = reverse_lazy('babybuddy:user-list')
 
-    def delete(self, request, *args, **kwargs):
-        success_message = format_lazy(gettext_lazy(
+    def get_success_message(self, cleaned_data):
+        return format_lazy(gettext_lazy(
             'User {user} deleted.'), user=self.get_object()
         )
-        messages.success(request, success_message)
-        return super(UserDelete, self).delete(request, *args, **kwargs)
 
 
 class UserPassword(LoginRequiredMixin, View):

core/views.py

@@ -66,17 +66,11 @@ class CoreUpdateView(PermissionRequiredMixin, SuccessMessageMixin,
         return self.success_message % cleaned_data
 
 
-class CoreDeleteView(PermissionRequiredMixin, DeleteView):
-    """
-    SuccessMessageMixin is not compatible DeleteView.
-    See: https://code.djangoproject.com/ticket/21936
-    """
-    def delete(self, request, *args, **kwargs):
-        success_message = _('%(model)s entry deleted.') % {
+class CoreDeleteView(PermissionRequiredMixin, SuccessMessageMixin, DeleteView):
+    def get_success_message(self, cleaned_data):
+        return _('%(model)s entry deleted.') % {
             'model': self.model._meta.verbose_name.title()
         }
-        messages.success(request, success_message)
-        return super(CoreDeleteView, self).delete(request, *args, **kwargs)
 
 
 class ChildList(PermissionRequiredMixin, BabyBuddyFilterView):

requirements.txt

@@ -20,7 +20,7 @@ django-import-export==2.7.1
 django-ipware==4.0.2; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5'
 django-storages==1.12.3
 django-widget-tweaks==1.4.12
-django==3.2.11
+django==4.0.1
 djangorestframework==3.13.1
 et-xmlfile==1.1.0; python_version >= '3.6'
 faker==11.3.0