GREG-60: Fixing some problems when registering invite

greg/permissions.py

@@ -6,7 +6,7 @@ from gregui.models import GregUserProfile
 class IsSponsor(BasePermission):
     def has_permission(self, request, view):
         try:
-            user = GregUserProfile.objects.get(user=request.user)
+            user = GregUserProfile.objects.get(user=request.user.id)
             return bool(user.sponsor)
         except GregUserProfile.DoesNotExist:
             return False

gregui/api/views/invitation.py

@@ -67,7 +67,7 @@ class CreateInvitationView(CreateAPIView):
         person = serializer.save()
 
         invitationlink = InvitationLink.objects.filter(
-            invitation__person=person.id,
+            invitation__role__person=person.id,
             invitation__role__sponsor_id=sponsor_user.sponsor,
         )
         # TODO: send email to invited guest