Add a delete question button

apps/participation/views.py

@@ -13,8 +13,7 @@ from django.shortcuts import redirect
 from django.template.loader import render_to_string
 from django.urls import reverse_lazy
 from django.utils.translation import gettext_lazy as _
-from django.views.generic import CreateView, DetailView, FormView, RedirectView, UpdateView
-from django.views.generic.base import TemplateView
+from django.views.generic import CreateView, DeleteView, DetailView, FormView, RedirectView, TemplateView, UpdateView
 from django.views.generic.edit import FormMixin, ProcessFormView
 from django_tables2 import SingleTableView
 from magic import Magic
@@ -430,6 +429,27 @@ class UpdateQuestionView(LoginRequiredMixin, UpdateView):
         return reverse_lazy("participation:participation_detail", args=(self.object.participation.pk,))
 
 
+class DeleteQuestionView(LoginRequiredMixin, DeleteView):
+    """
+    Remove a question.
+    """
+    model = Question
+
+    def dispatch(self, request, *args, **kwargs):
+        self.object = self.get_object()
+        if not request.user.is_authenticated:
+            return self.handle_no_permission()
+        if request.user.registration.is_admin or \
+                request.user.registration.participates and \
+                request.user.registration.team.pk == self.object.participation.team_id:
+            return super().dispatch(request, *args, **kwargs)
+        raise PermissionDenied
+
+    def get_success_url(self):
+        return reverse_lazy("participation:participation_detail", args=(self.object.participation.pk,))
+
+
+
 class UploadVideoView(LoginRequiredMixin, UpdateView):
     """
     Upload a solution video for a team.