django - 使用 through 过滤 ManyToManyField

Question

我有模型：

class Player(models.Model) :
    ...
    teams = models.ManyToManyField("Team", through="PlayerTeam")

class Team(models.Model) :
    ...
    players = models.ManyToManyField("Player", through="PlayerTeam")

class PlayerTeam(models.Model) :
    player = models.ForeignKey(Player)
    team = models.ForeignKey(Team)
    date_begin = models.DateField()
    date_end = models.DateField(blank=True, null=True)

我想获得所有在选定球队中比赛的球员（date_end 为空）。我试过这个：

team = get_object_or_404(Team, pk=id)
players = team.players.filter(date_end__isnull=True)

但它不起作用，因为字段 'date_end' 不在 Player 模型中

Answer 1

用这个：

players = team.playerteam_set.filter(date_end__isnull=True).values_list('player', flat=True)