Django模型-自动引用

Question

class BusinessUnit(models.Model):
class Meta:
db_table = 'carecode_business_unit'
parent_business_unit = models.ForeignKey(BusinessUnit)

"BusinessUnit">

是否有可能在Django中创建一个自动引用模型?

Answer 1

class BusinessUnit(models.Model):
class Meta:
db_table = 'carecode_business_unit'
parent_business_unit = models.ForeignKey('self', on_delete=models.CASCADE, default=None)

Answer 2

class BusinessUnit(models.Model):
class Meta:
db_table = 'carecode_business_unit'
parent_business_unit = models.ForeignKey("BusinessUnit", on_delete=models.set_NULL)

在模型周围添加引号。你不能直接引用父类，但是django可以用引号惰性加载它。