[Answered ]-Updating a model instance via a ModelForm: 'unicode' object has no attribute '_meta'

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In your editcourse view, pk isn’t the kurs instance, it’s a string with the id (in this case '6').

You need to fetch the instance from the db. The shortcut get_object_or_404 is useful for this. Note that you should pass the instance to the form in the GET and POST branches of your if statement.

from django.shortcuts import get_object_or_404

def editcourse(request, pk):
   kurs = get_object_or_404(Kurs, pk=pk)
    if request.method=='POST':
        form = KursForm(request.POST, instance=kurs)
        if form.is_valid():
            form.save()
            return HttpResponseRedirect('/polls/usersite')
    else:
        form = KursForm(instance=kurs)

    return render(request, 'polls/editcourse.html', {"form" : form})
👤Alasdair

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