title: Get_queryset() missing 1 required positional argument: 'request'
body: <p>I have a listview like this:</p>
  
  <pre><code>class IncidentListView(generic.ListView):
      model = Incident
      paginate_by = 3
  
  
      def get_queryset(self,request):
          order_by = request.GET.get('order_by', 'defaultOrderField')
          return model.objects.all().order_by(order_by)  
  </code></pre>
  
  <p>When I go to the url, I get this error:</p>
  
  <pre><code>get_queryset() missing 1 required positional argument: 'request'
  </code></pre>
  
  <p>What am I doing wrong? I want to make it so you can click a sorting link that creates a new listview, but unsure how to approach.</p>
  
  <p>For reference, I followed the recommendation <a href="https://stackoverflow.com/questions/47509515/django-get-queryset-missing-1-required-positional-argument-request">here</a></p>