class Project(models.Model):
    name = models.CharField(max_length=100)
    description = models.TextField()
    date_created = models.DateTimeField(default=timezone.now)
    author = models.ForeignKey(User, on_delete=models.CASCADE)

class Task(models.Model):
    name = models.CharField(max_length=50, default='New Model')
    project = models.ForeignKey(Project, on_delete=models.CASCADE)
    date_created = models.DateTimeField(default=timezone.now)

class TaskDeleteView(LoginRequiredMixin, UserPassesTestMixin, DeleteView):
    model = Task
    template_name = 'tasks/confirm_delete.html'   # template for deletion
    success_url ='/projects/'

    # Test user permission
    def test_func(self):
        task = self.get_object()

        if self.request.user == task .project.author:
            return True
        else:
            return False

    def get_success_url(self):
        project = self.object.
        return reverse_lazy('tasks-listview', kwargs={'pk': project.id })

urlpatterns = [
    path('tasks/<int:pk>/list/', TasksListview.as_view(), name='tasks-listview'),
    path('tasks/<int:pk>/delete/', TaskDeleteView.as_view(), name='task-delete'),
]