如何访问模板中自定义的多对多直通对象中的字段

Question

考虑以下模型:

class Person(models.Model):
    name = models.CharField(max_length=128)

class Group(models.Model):
    name = models.CharField(max_length=128)
    members = models.ManyToManyField(Person, through='Membership')

class Membership(models.Model):
    person = models.ForeignKey(Person)
    group = models.ForeignKey(Group)
    date_joined = models.DateField()
    invite_reason = models.CharField(max_length=64)

成员资格是一个定制的多对五通过额外字段的对象.
如果我有一个人物实例,我如何访问其常规代码和django模板文件中所有成员关系的相应date_joined字段？

Answer 1

person.membership_set.all()将为您Membership提供给定的所有实例的列表person.您可以在常规代码和模板中使用它.

for each in person.membership_set.all():
    print each.date_joined

{% for each in person.membership_set.all %}
    {{ each.date_joined }}
{% endfor %}