《姜戈》:如何倒着读《外国人》(self)-Django:HowtofollowForeignKey('self')backwards

16  

By default, django will call the reverse the model name, followed by "_set", so it would be

默认情况下，django将调用反向的模型名，后面跟着“_set”，所以应该是这样

Achievement.objects.get(pk="1").achievement_set

If that doesn't suit you, use the related_name optional argument to models.ForeignKey:

如果不适合，可以使用related_name可选参数对模型。

class Achievement(MyBaseModel):
    parent_achievement = models.ForeignKey(
        'self', 
        blank=True, 
        null=True, 
        help_text="An achievement that must be done before this one is achieved",
        related_name="child_achievement_set"
    ) # long name since parent is reserved

Achievement.objects.get(pk="1").child_achievement_set

1  

Don't know if this is the best way, but this also gets the job done

不知道这是不是最好的方法，但这也能完成工作

Achievement.objects.filter(parent_achievement=1)

or

或

Achievement.objects.filter(parent_achievement__pk=1)