new_contents: from django.core.management.base import BaseCommand,CommandError
  from django.utils.translation import ugettext_lazy as _
  
  from daiquiri.core.constants import ACCESS_LEVEL_CHOICES
  from daiquiri.metadata.models import Schema
  
  
  class Command(BaseCommand):
  
      def add_arguments(self, parser):
          parser.add_argument('schema', help='the schema to be updated')
          parser.add_argument('access_level', help='new access_level and metadata_access_level')
  
      def handle(self, *args, **options):
  
          if options['access_level'] not in dict(ACCESS_LEVEL_CHOICES):
              raise CommandError(_('Unknown access_level.'))
  
          schema = Schema.objects.get(name=options['schema'])
          schema.access_level = options['access_level']
          schema.metadata_access_level = options['access_level']
          schema.save()
  
          for table in schema.tables.all():
              table.access_level = options['access_level']
              table.metadata_access_level = options['access_level']
              table.save()
  
subject: Add update_access_level management script