如何临时禁用django-postgresql中的db完整性约束

我正在编写一个Django命令来为一个现有表播种,

我需要在设定种子之前截断该表,但该表上存在外键约束。

django.db.utils.IntegrityError文件 在截断表时,

SET FOREIGN KEY CHECK = 0 但不知道放在哪里:(

Django命令类:

class Command(BaseCommand):
help = "Command to seed the aws regions"
regions = [
    {
        'name': 'Us East (N. Virginia)',
        'region': 'us-east-1',
    },
    {
        'name': 'US West (Oregon)',
        'region': 'us-west-2',
    },
    {
        'name': 'EU (Ireland)',
        'region': 'eu-west-1',
    },
]
def handle(self, *args, **options):
    self.stdout.write('seeding regions...')

    AwsRegions.objects.all().delete() # this is where i get errors

    for name, region in self.regions:
        self.stdout.write(region)
        AwsRegions.objects.create(name, region)


    self.stdout.write('done seeding regions')