Unable to log in to the PostCreateView template - django

Question

I have built a blog project and I can't access the PostCreateView for some unknown reason.
I keep getting Page 404 error although I have in the urls patterns
I am also getting the error raised by
score.views.PostDetailView
Here is the views.py
class PostCreateView(LoginRequiredMixin, SuccessMessageMixin, CreateView):
model = Post
fields = ['title', 'design']
template_name = "post_form.html"
success_url = "/score/"
success_message = "Your Post has been submitted"
def form_valid(self, form):
form.instance.designer = self.request.user
return super().form_valid(form)
here is the PostDetail Views.py
class PostDetailView(DetailView):
model = Post
template_name = "post_detail.html"
def get_context_data(self, *args, **kwargs):
context = super(PostDetailView, self).get_context_data()
post = get_object_or_404(Post, slug=self.kwargs['slug'])
total_likes = post.total_likes()
liked = False
if post.likes.filter(id=self.request.user.id).exists():
liked = True
context["total_likes"] = total_likes
context["liked"] = liked
return context
Here is the Urls.py
app_name = 'score'
urlpatterns = [
path('', PostListView.as_view(), name='score'),
path('<slug:slug>/', PostDetailView.as_view(), name='post-detail'),
path('new/', PostCreateView.as_view(), name='post-create'),
path('user/<str:username>', UserPostListView.as_view(), name='user-posts'),
]
here is the nav bar html that is taking me to the page
<a class="nav-link waves-effect" href="{% url 'score:post-create' %}" >Upload Post</a>
here is the post_form template
<form method="POST" enctype="multipart/form-data">
{% csrf_token %}
<fieldset class="form-group">
<legend class="border-bottom mb-4" style="padding-top: 20px;">Upload Your Post</legend>
{{ form|crispy }}
</fieldset>
<div class="form-group">
<button class="btn btn-outline-info ml-0" type="submit">Upload</button>
</div>
</form>

Answer 1

The problem is that your <slug:slug> will capture values like new as well. So that path will "fire", and the view will find out that there is no Post object with 'new' as slug.
You can swap the path(…)s, but then you can never access a Post with as slug new. As a rule of thumb it is better to make path(…)s that are not overlapping, for example:
app_name = 'score'
urlpatterns = [
path('', PostListView.as_view(), name='score'),
path('post/<slug:slug>/', PostDetailView.as_view(), name='post-detail'),
path('new/', PostCreateView.as_view(), name='post-create'),
path('user/<str:username>', UserPostListView.as_view(), name='user-posts'),
]