获取在外键字段中引用的所有对象 [英] Getting all objects referenced in a foreign key field

问题描述

我有类似的模型

class Person(Model):
    name = CharField(max_length=100)

class Movie(Model):
    ...
    director = ForeignKey(Person)

如何获取所有设置为任何Movie对象的导演的Person对象的集合?

How would I get the set of all Person objects which are set as the director for any Movie object?

edit:要澄清一下，如果我的电影表"由两个条目组成，一个由导演A组成，一个由导演B组成，而我的人物"表由三个条目A，B和C组成，我想得到集合{A，B}

edit: to clarify, if my Movie 'table' consisted of two entries, one with director A and one with director B, and my Person 'table' consisted of the three entries A, B, and C, I would want to get the set {A, B}

推荐答案

我知道了，

Person.objects.exclude(director__set=None)

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