Introduce event slug based url handling

Create mixin (FilterByEventSlugMixin) to handle even slug parsing in generic views
Add submission url config
Include submission urls in central url config
Add index view for submissions

AKModel/views.py

-# Create your views here.
+from django.http import Http404
+
+from AKModel.models import Event
+
+
+class FilterByEventSlugMixin:
+    """
+    Mixin to filter different querysets based on a event slug from the request url
+    """
+    event = None
+
+    def get_queryset(self):
+        # Find event based on event slug
+        try:
+            self.event = Event.get_by_slug(self.kwargs.get("event_slug", None))
+        except Event.DoesNotExist:
+            raise Http404
+
+        # Filter current queryset based on url event slug or return 404 if event slug is invalid
+        return super().get_queryset().filter(event=self.event)
+
+    def get_context_data(self, *, object_list=None, **kwargs):
+        context = super().get_context_data(object_list=object_list, **kwargs)
+        # Add event to context (to make it accessible in templates)
+        context["event"] = self.event
+        return context

AKPlanning/urls.py

@@ -14,8 +14,9 @@ Including another URLconf
     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
 """
 from django.contrib import admin
-from django.urls import path
+from django.urls import path, include
 
 urlpatterns = [
     path('admin/', admin.site.urls),
+    path('', include('AKSubmission.urls', namespace='submit')),
 ]

AKSubmission/urls.py

+from django.urls import path, include
+
+from . import views
+
+app_name = "submit"
+
+urlpatterns = [
+    path(
+        '<slug:event_slug>/',
+        include([
+            path('submission/', views.SubmissionOverviewView.as_view(), name='submission_overview'),
+        ])
+    ),
+]

AKSubmission/views.py

-# Create your views here.
+from django.views.generic import ListView
+
+from AKModel.models import AK
+from AKModel.views import FilterByEventSlugMixin
+
+
+class SubmissionOverviewView(FilterByEventSlugMixin, ListView):
+    model = AK
+    context_object_name = "AKs"
+    template_name = "AKSubmission/submission_overview.html"
+    ordering = ["type"]