how to configure redirect in DeleteView - django

Question

when i try to delete some comment it first take me to the comment_delete_confirm.html, then redirect to the page what linked in success_url = '/blog/'. Problem become when i change success_url to something like 'post-detail' (becose i want after comment_delete_confirm return to the post), it cannot find this page, becose in the brauser url it looks like that: '127.0.0.1:8000/blog/post/18/comment_delete/post-detail'
this is my views.py and urls.py files:
class CommentDeleteView(LoginRequiredMixin, UserPassesTestMixin, DeleteView):
model = Comment
success_url = 'post-detail'
# only the author can delete his post
# if not author try to delete post it gives 403 forbidden
def test_func(self):
comment = self.get_object()
if self.request.user == comment.user:
return True
return False
urlpatterns = [
path('', PostListView.as_view(), name='blog-home'),
path('user/<str:username>', UserPostListView.as_view(), name='user-posts'),
path('post/<int:pk>/', PostDetailView.as_view(), name='post-detail'),
path('post/new/', PostCreateView.as_view(), name='post-create'),
path('post/<int:pk>/update/', PostUpdateView.as_view(), name='post-update'),
path('post/<int:pk>/delete/', PostDeleteView.as_view(), name='post-delete'),
path('post/<int:pk>/comment/', add_comment, name='comment-create'),
path('post/<int:pk>/comment_update/', comment_update, name='comment-update'),
path('post/<int:pk>/comment_delete/', CommentDeleteView.as_view(), name='comment-delete')
]

Answer 1

You need to use the actual URL, not the name. You can use reverse_lazy for this.
from django.urls import reverse_lazy
class CommentDeleteView(LoginRequiredMixin, UserPassesTestMixin, DeleteView):
model = Comment
success_url = reverse_lazy('post-detail')
Edit
If you need dynamic data, you can override the get_success_url method instead of defining the attribute directly. There you have access to self.object (because the method is called before the deletion is actually processed). Assuming your comment object has a post field which is a foreign key to Post:
def get_success_url(self):
return reverse('post-detail', kwargs={'pk': self.object.post_id})