如何在Peewee元类中使用默认排序

Question

我正在使用Peewee ORM。

我有这样的课：

class Sample(PMBaseModel):
    id = peewee.PrimaryKeyField()
    location = peewee.CharField(max_length=255)
    position = peewee.IntegerField()

    class Meta:
        db_table = 'sample'

如何使用Meta Class设置默认排序并定义订单类型？

Answer 1

我感谢@giaosudau找到了答案。

class Sample(PMBaseModel):
    id = peewee.PrimaryKeyField()
    location = peewee.CharField(max_length=255)
    position = peewee.IntegerField()

    class Meta:
        db_table = 'sample'
        order_by = ['-location']

如果在order_by部分的字段名称的第一位使用'-'，则peewee对字段执行DESC排序。

Answer 2

请遵循以下说明https://peewee.readthedocs.org/en/latest/peewee/models.html#model-options

我们使用order_by字段列表进行默认排序

然后

class Sample(PMBaseModel):
    id = peewee.PrimaryKeyField()
    location = peewee.CharField(max_length=255)
    position = peewee.IntegerField()

    class Meta:
        db_table = 'sample'
        order_by = ['location']