有ForeignKey的model里, django会自动生成一个FOO_set的属性, 可以用related_name替换这个属性名(用了related_name, Foo_set还是可以用)。例如:
form django.db import models
class Game(models.Model):
player = ForeignKey(User, related_name="players")
judger = ForeignKey(User, related_name="judgers")
level = models.IntegerField()
g1 = Game.objects.create(player=u1, judger=u20, level=9)
g2 = Game.objects.create(player=u2, judger=u20, level=9)
g3 Game.objects.create(player=u3, judger=u20, level=9)
g1.judger.judgers.all() #返回上面三个Game对象,所有judger为u20的Game对象
Game.objects.filter(judger=lol.judger) #效果跟上面相同related_name="+", 不向后关联