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Python

Hadi Farhat
Hadi Farhat
10,678 Points

How to know when to use super() when overriding a CVB method?

In the video, Kenneth overrode two CBV methods:

The get_initial method:

class TeamCreate(CreateView):
    fields = ("name", "coach", "practice_location")
    model = models.Team

    def get_initial(self):
        initial = super().get_initial()
        initial['coach'] = self.request.user.pk
        return initial

The get_queryset method

class TeamDelete(DeleteView):
    model = models.Team
    success_url = reverse_lazy('teams:list')

    def get_queryset(self):
        if not self.request.user.is_superuser:
            return self.model.objects.filter(coach=self.request.user)
        return self.model.objects.all()

The difference between them is calling super() and I want to know when to call it.

1 Answer

Steven Parker
Steven Parker
229,657 Points

It looks like more a matter of "why" than "when". The first function needs to access "initial" and uses super to call the get_initial method of the parent class.

The second one doesn't need access to anything other than what it inherits so it has no need to use super.