Question

我想改变这个：

cpses = CanonPerson.objects.filter(persons__vpd = 1)

到此：

cpses = CanonPerson.objects.filter(persons__vpd in [1, 2, 3, 4, 5])

但这引发了一个例外：

NameError: global name 'persons__vpd' is not defined

型号：

class CanonPerson(models.Model):
    p_id                = models.PositiveIntegerField(primary_key=True)
    persons             = models.ManyToManyField(Person, related_name='persons')

class Person(models.Model):
    vp_id               = models.AutoField(primary_key=True)
    p_id                = models.PositiveIntegerField(db_index=True)
    vpd                 = models.ForeignKey(VPD, db_column='vpd')

class VPD(models.Model):
    id          = models.SmallIntegerField(primary_key=True)
    name        = models.CharField(max_length=100)

Answer 1

使用https://docs.djangoproject.com/en/dev/topics/db/queries/#the-pk-lookup-shortcut，CanonPerson.objects.filter(persons__vpd__in=[1,2,3,4,5])应该有效。

如何在列表中过滤ManyToManyField？

1 个答案: