Reverse for 'profile_likes' with arguments '('',)' not found. 1 pattern(s) tried: ['profil/likes/(?P<pk>[0-9]+)/\\Z']

Using Django Mystery Errors
1

Hello!

I am trying to implement a like function and encountered an error I can’t get my head around. I appreciate all guidance and explanations.

Problem:

  1. I cannot render the profile page. Whenever I render the profile page I get an NoReversMatch error.
  2. The context_object_name dosen’t work. I am using object.something in my template to display data. The numer of likes is displayed without a problem.

In the model, I have both a OneToOne and a ManyToMany relationship to the Member model. I does not make sense to me having the two relationships because they to seem to contradict each other. Can someone explain if this is correct or not?

What I have done

I’ve made sure that there is data in the database.

1
11054×172 16.8 KB

2
21231×391 19.6 KB

View:

class ProfilePageView(DetailView):
    model = ProfilePageMember
    template_name = "profile_app/profilepage.html"
    # context_object_name = "user_data"

    def get_context_data(self, *args, **kwargs):
        context = super().get_context_data(**kwargs)
        stuff = get_object_or_404(ProfilePageMember, id=self.kwargs["pk"])
        total_likes = stuff.total_likes()
        context["total_likes"] = total_likes
        return context


def LikeView(request, pk):
    profile = get_object_or_404(
        ProfilePageMember, id=request.POST.get("profile_likes"))
    profile.likes.add(request.user)
    return HttpResponseRedirect(reverse("profilepage_app:profile-redirect", args=[str(pk)]))

Model


class ProfilePageMember(models.Model):
    members = models.OneToOneField(Member, on_delete=models.CASCADE)
    likes = models.ManyToManyField(Member, related_name="profile_likes")

    def __str__(self):
        return str(self.members)

    def total_likes(self):
        return self.likes.count()

URL


urlpatterns = [
    path("profilsida/<int:pk>/",
         views.ProfilePageView.as_view(), name="profile-redirect"),
    path("uppdatera-profil/<int:pk>/", views.ProfilePageUpdateView.as_view(),
         name="profilepage-update"),
    path("likes/<int:pk>/", views.LikeView, name="profile_likes"),
[

Template

<div class="d-flex align-items-center justify-content-between flex-row">
     <form action="{% url 'profilepage_app:profile_likes' profile.pk %}" method = "POST">
          {% csrf_token %}
          <input type="submit" name="profile_likes" value="{{profile.id}}">
              <i class="bi bi-hand-thumbs-up"></i>
          </input>
      </form>      
 </div>
2

Assuming that what you’ve labelled “Template” is the “profilepage.html”, the problem is that you’re trying to reference an object named “profile”, but you haven’t put an object by that name in the context being created by the view.

3

Hello Mr Ken!

I don’t understand. I have a profile_likes object in the LikeView-function.

I changed the view function and added error handling, but it still does not work.

def LikeView(request, pk):
    profile_likes = request.GET.get("profile_likes")
    if profile_likes:
        profile = get_object_or_404(ProfilePageMember, id=profile_likes)
        profile.likes.add(request.user)
    return HttpResponseRedirect(reverse("profilepage_app:profile-redirect", args=[str(pk)]))

Could you please explain more or give me a hint?

4

But that’s not the view throwing the error.

The error message is telling you that the error is being thrown in /profil/profilsida/1/, which is mapped by your urls.py file to the ProfilePageView

So the problem is in ProfilePageView, not LikeView.

1 Like