Resolve "Provide infrastructure for live documents"

Closes #3 (closed)

aleksis/apps/resint/views.py

@@ -3,7 +3,7 @@ from typing import Any, Dict, Type
 from django.contrib.contenttypes.models import ContentType
 from django.db.models import QuerySet
 from django.forms import BaseModelForm, modelform_factory
-from django.http import FileResponse, HttpRequest
+from django.http import FileResponse, HttpRequest, Http404
 from django.shortcuts import get_object_or_404
 from django.urls import reverse_lazy
 from django.utils.decorators import method_decorator
@@ -229,4 +229,7 @@ class LiveDocumentShowView(PermissionRequiredMixin, SingleObjectMixin, View):
 
     def get(self, request: HttpRequest, *args: Any, **kwargs: Any) -> FileResponse:
         live_document = self.get_object()
+        file = live_document.get_current_file()
+        if not file:
+            raise Http404
         return FileResponse(live_document.get_current_file(), content_type="application/pdf")