Invalidate signatures along with global ID content

boards/management/commands/invalidate_sync_cache.py

@@ -1,20 +1,22 b''
 from django.core.management import BaseCommand
 from django.db import transaction
 
 from boards.models import GlobalId
 
 __author__ = 'neko259'
 
 
 class Command(BaseCommand):
     help = 'Removes local global ID cache'
 
     @transaction.atomic
     def handle(self, *args, **options):
         count = 0
-        for global_id in GlobalId.objects.all():
+        for global_id in GlobalId.objects.exclude(content__isnull=True).exclude(
+                content=''):
             if global_id.is_local() and global_id.content is not None:
                 global_id.content = None
                 global_id.save()
+                global_id.signature_set.all().delete()
                 count += 1
         print('Invalidated {} caches.'.format(count))