deleting objects, going from ListView to DeleteView - django

Question

I have a ListView and from this I want to delete some objects using DeleteView. What I have so far:
views.py
class BlockListView(ListView):
model= Classroom
def get_context_data(self, **kwargs):
context = super(BlockListView, self).get_context_data(**kwargs)
classroom_blocks = Classroom.objects.all()
context = {'classroom_blocks': classroom_blocks}
return context
list_classroom_view = BlockListView.as_view()
class BlockDeleteView(DeleteView):
model = Classroom
success_url = reverse_lazy('classroom:blocklist')
delete_classroom_view = BlockDeleteView.as_view()
urls.py
urlpatterns = [
path(r'^$', views.index, name='index'),
path('submitted', views.submitted, name='submitted'),
path('classup/', create_classroom_view, name='classroom'),
path('block/', views.block, name='block'),
path('blocklist/', list_classroom_view, name='blocklist'),
path(r'^(?P<pk>\d+)/blockDelete/$', delete_classroom_view, name='blockDelete'),
]
template for listview:
{% for block in classroom_blocks %}
<li>{{ block.get_course_block_display }}DELETE</li>
{% empty %}
<li>No classes set up yet.</li>
{% endfor %}
template for confirm delete:
{% block body %}
<h1>Confirm Delete</h1>
<form action="." method="post">{% csrf_token %}
<p>Are you sure you want to delete "{{ object.course_block }}"?</p>
<input type="submit" value="Confirm" />
</form>
{% endblock %}
After I click the delete button from the listview, the url generated is http://127.0.0.1:8000/classroom/%5E(%3FP89%5Cd+)/blockDelete/$ and this directs to the confirm delete page. After confirming delete, I get a 404 error with Request URL: http://127.0.0.1:8000/classroom/%5E(%3FP89%5Cd+)/blockDelete/

Answer 1

You are using path(), so you shouldn't be using regexes. Change the first and last URL patterns to:
path('', views.index, name='index'),
...
path('<int:pk>/blockDelete/', delete_classroom_view, name='blockDelete'),
Now, when you click on the delete button from the list view, you should be taken to a url like /classroom/1/blockDelete/, and you shouldn't get a 404 when you submit the form.