Use key_name instead of link_id
Some entities do not have a link_id, but all entities are guaranteed
to have a key_name (or an id).
from django.core.management.base import NoArgsCommand
class Command(NoArgsCommand):
help = "Returns a list of the SQL statements required to return all tables in the database to the state they were in just after they were installed."
output_transaction = True
def handle_noargs(self, **options):
from django.core.management.sql import sql_flush
return u'\n'.join(sql_flush(self.style, only_django=True)).encode('utf-8')