Fix problem with the tests by dynamically setting the view model

instead of using a model @property or lookup method.

awx/api/views/webhooks.py

@@ -11,29 +11,15 @@ from rest_framework.response import Response
 from awx.api import serializers
 from awx.api.generics import APIView, GenericAPIView
 from awx.api.permissions import WebhookKeyPermission
-from awx.main.models import JobTemplate, WorkflowJobTemplate
+
+# NOTE: The model class attribute for these views must be added
+# dynamically when including urls/webhooks.py
 
 
 class WebhookKeyView(GenericAPIView):
     serializer_class = serializers.EmptySerializer
     permission_classes = (WebhookKeyPermission,)
 
-    @property
-    def model(self):
-        qs_models = {
-            'job_templates': JobTemplate,
-            'workflow_job_templates': WorkflowJobTemplate,
-        }
-        model = qs_models.get(self.kwargs['model_kwarg'])
-        return model
-
-    def get_queryset(self):
-        model = self.model
-        if model:
-            return self.request.user.get_queryset(model)
-        # Provide a fallback do-nothing queryset so that get_object() has something to work with.
-        return JobTemplate.objects.none()
-
     def get(self, request, *args, **kwargs):
         obj = self.get_object()
 
@@ -55,15 +41,7 @@ class WebhookReceiverBase(APIView):
         return super().dispatch(*args, **kwargs)
 
     def get_queryset(self):
-        qs_models = {
-            'job_templates': JobTemplate,
-            'workflow_job_templates': WorkflowJobTemplate,
-        }
-        model = qs_models.get(self.kwargs['model_kwarg'])
-        if model is None:
-            raise PermissionDenied
-
-        return model.objects.filter(webhook_service=self.service)
+        return self.model.objects.filter(webhook_service=self.service)
 
     def get_object(self):
         queryset = self.get_queryset()