有个疑惑,django 设置on_delete =models.CASCADE好像没作用
class User(models.Model):
email = models.CharField(max_length=100, unique=True)
password = models.CharField(max_length=100)
create_time = models.DateTimeField(auto_now_add=True)
class Session(models.Model):
user = models.ForeignKey(User, on_delete=models.CASCADE)
token = models.CharField(max_length=100, unique=True)
数据库是mysql,默认引擎innodb
show create table test_session \G
migrate之后并没有看到对应的表有设置 ON DELETE属性
而且我如果先删除主表会提示error
ERROR 1451 (23000): Cannot delete or update a parent row: a foreign key constraint fails
另外,django也不支持on_update ?