Optimize localadmin checks

- Get rid of needless queries

backend/auth.py

@@ -6,10 +6,16 @@ def is_superadmin(request):
     return request.user.is_authenticated and request.user.is_superuser
 
 
+# def is_localadmin(request):
+#     """Returns True, if the current user is Tenant-level administrator"""
+#     user = request.user
+#     return user.is_authenticated and request.tenant.admins.filter(id=user.id).exists() or is_superadmin(request)
+
+
 def is_localadmin(request):
     """Returns True, if the current user is Tenant-level administrator"""
     user = request.user
-    return user.is_authenticated and request.tenant.admins.filter(id=user.id).exists() or is_superadmin(request)
+    return is_superadmin(request) or user.is_localadmin
 
 
 def is_authenticated(request):

tenants/middleware.py

@@ -21,6 +21,11 @@ def __call__(self, request):
             if not query_set.exists():
                 raise Http404(f"Unable to find Tenant for hostname {hostname}")
             request.tenant = query_set.first()
+            request.user.is_localadmin = (
+                request.user.is_authenticated
+                and request.tenant.admins.filter(id=request.user.id).exists()
+                or request.user.is_superuser
+            )
         except Http404 as exception:
             if settings.DEBUG:
                 request.tenant = Tenant.objects.first()