firewall_gui: allow to crete new vlangroup

firewall_gui/views.py

@@ -388,8 +388,9 @@ def show_vlan(request, id=None):
     return HttpResponse(json.dumps(vlan), content_type='application/json')
 
 
-def show_vlangroup(request, id):
-    group = get_object_or_404(VlanGroup, id=id)
+def show_vlangroup(request, id=None):
+    try:
+        group = VlanGroup.objects.get(id=id)
         group = {
             'id': group.id,
             'name': group.name,
@@ -416,10 +417,24 @@ def show_vlangroup(request, id):
                 'nat': rule.nat
             } for rule in group.rules.all()]
         }
+    except:
+        group = {
+            'id': None,
+            'name': None,
+            'vlans': [],
+            'description': '',
+            'owner': {
+                'name': None
+            },
+            'created_at': None,
+            'modified_at': None,
+            'rules': []
+        }
     return HttpResponse(json.dumps(group), content_type='application/json')
 
 
-def show_hostgroup(request, id):
+def show_hostgroup(request, id=None):
+    try:
         group = get_object_or_404(Group, id=id)
         group = {
             'id': group.id,
@@ -447,6 +462,19 @@ def show_hostgroup(request, id):
                 'nat': rule.nat
             } for rule in group.rules.all()]
         }
+    except:
+        group = {
+            'id': None,
+            'name': None,
+            'description': '',
+            'owner': {
+                'name': None,
+            },
+            'created_at': None,
+            'modified_at': None,
+            'hosts': [],
+            'rules': []
+        }
     return HttpResponse(json.dumps(group), content_type='application/json')
 
 def show_record(request, id):