CODEWITHSUNDEEP
djangopython-3.xdjango-class-based-views
Adam
Adam

Reputation: 3778

Django view being called with no kwargs

I have a django.views.generic.DetailView-based class called LocationView that is set up like this:

class LocationView(DetailView):
    model = Location
    pk_url_kwarg = 'location_id',
    template_name = 'accounts/locations/view_location.html'

And the corresponding url definition:

url(
    r'^accounts/(?P<account_id>\d+)/locations/(?P<location_id>\d+)/$'
    LocationView.as_view(),
    name='view_location',
)

When I try to access LocationView in my browser, I get the following exception:

AttributeError: Generic detail view LocationView must be called with either an object pk or a slug.

After much digging, I found out that somewhere along the line, self.pk_url_kwarg gets changed from 'location_id' to ('location_id', ), which causes the view to fail to retrieve the object's pk when it runs self.kwargs.get(self.pk_url_kwarg) because none of the keys in self.kwargs matches the modified pk_url_kwarg value.

Why is this happening and how can I fix it?

django.VERSION == (1, 11, 'final', 0)

Upvotes: 0

Views: 44

Answers (1)

knbk
knbk

Reputation: 53669

It's because you've set it to a tuple:

pk_url_kwarg = 'location_id',

Note the trailing comma. That is what turns a statement into a tuple. To fix it, simply remove the comma:

pk_url_kwarg = 'location_id'

Upvotes: 2

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