raise error for invalid type lookup

awx/main/tests/functional/utils/test_common.py

@@ -3,10 +3,14 @@ import pytest
 import copy
 import json
 
+from django.db import DatabaseError
+
 from awx.main.utils.common import (
     model_instance_diff,
     model_to_dict,
+    get_model_for_type
 )
+from awx.main import models
 
 
 @pytest.mark.django_db
@@ -58,3 +62,20 @@ def test_model_instance_diff(alice, bob):
     assert hasattr(alice, 'is_superuser')
     assert hasattr(bob, 'is_superuser')
     assert 'is_superuser' not in output_dict
+
+
+@pytest.mark.django_db
+def test_get_model_for_invalid_type():
+    with pytest.raises(DatabaseError) as exc:
+        get_model_for_type('foobar')
+    assert 'not a valid AWX model' in str(exc)
+
+
+@pytest.mark.django_db
+@pytest.mark.parametrize("model_type,model_class", [
+    ('inventory', models.Inventory),
+    ('job_template', models.JobTemplate),
+    ('unified_job_template', models.UnifiedJobTemplate)
+])
+def test_get_model_for_valid_type(model_type, model_class):
+    assert get_model_for_type(model_type) == model_class

awx/main/utils/common.py

@@ -24,6 +24,7 @@ from decorator import decorator
 
 # Django
 from django.core.exceptions import ObjectDoesNotExist
+from django.db import DatabaseError
 from django.utils.translation import ugettext_lazy as _
 from django.db.models.fields.related import ForeignObjectRel, ManyToManyField
 
@@ -506,6 +507,8 @@ def get_model_for_type(type):
         ct_type = get_type_for_model(ct_model)
         if type == ct_type:
             return ct_model
+    else:
+        raise DatabaseError('"{}" is not a valid AWX model.'.format(type))
 
 
 def cache_list_capabilities(page, prefetch_list, model, user):