visualization: use correct Visualization object (#38356)

bijoe/visualization/views.py

@@ -188,7 +188,7 @@ class VisualizationsView(views.AuthorizationMixin, ListView):
     context_object_name = 'visualizations'
 
     def get_queryset(self):
-        return Visualization.all_visualizations()
+        return self.model.all_visualizations()
 
 
 class RenameVisualization(views.AuthorizationMixin, UpdateView):

tests/test_views.py

@@ -33,6 +33,7 @@ def test_superuser(app, admin):
     assert len(resp.json) == 1
     assert resp.json[0]['slug'] == 'statistics'
     app.get('/', status=200)
+    app.get('/visualization/', status=200)
 
 
 def test_visualizations_json_api(schema1, app, admin):