'Keyerror at /' when passing user with primary key in queryset for a listview

models.py

class Notes(models.Model):
    author = models.ForeignKey(User, on_delete=models.CASCADE)
    title = models.CharField(max_length=100)
    content = models.TextField()
    date_added = models.DateTimeField(default=timezone.now)

views.py

class HomepageView(ListView):
    model = Notes
    template_name = "home.html"

    def get_queryset(self):
        return Notes.objects.filter(Q(author=self.kwargs['pk']))

It points out pk has KeyError, is there any way to get rid of it Thanks in advance...!

The self.kwargs contains the parameters, that are in the URL path. So in your urls.py, you should define shomething like:

# urls.py

from app.views import HomePageView

urlpatterns = [
    path('<int:pk>/', HomePageView.as_view()),
]

Then you can visit the page, with a valid primary key, so for example /14 if 14 is a valid primary key for a User.

If you want to use the logged in user instead, you should use self.request.user instead:

# in case you want to use the logged in user

django.views.generic.list import ListView
from django.contrib.auth.mixins import LoginRequiredMixin

class HomepageView(LoginRequired, ListView):
    model = Notes
    template_name = 'home.html'

    def get_queryset(self):
        return Notes.objects.filter(author=self.request.user)

Note: it might be better to use get_user_model [Django-doc] to point to the user model, since if you later change the user model, altering the foreign keys will be easier.

Note: You might want to consider using a DateTimeField(auto_now_add=True) instead of the models.DateTimeField(default=timezone.now), since that will make the field non-editable, etc.