Python 从其他模型字段中选择django模型字段限制

我在做一个足球应用程序，我有一个固定装置或游戏模型，这可以得到两支球队，它为比赛增加了时间和内容，但我也有FixturedCard和FixturedGoals，现在发生的是FixtureGoals和FixturedCard有3个字段，赛程的外键和一个进球的球队的外键，然后是另一个来显示哪个球员进球了

基本夹具类

class Fixture(TitleAndSlugModel):
    """
    A division match fixture
    """
    division = models.ForeignKey(Division)
    fixture_date_time = models.DateTimeField()
    team_a = models.ForeignKey("team.Team", related_name="team_a")
    team_b = models.ForeignKey("team.Team", related_name="team_b")

固定目标

class FixtureGoal(BaseModel):
    """
    A goal recorded against a match fixture
    """
    fixture = models.ForeignKey(Fixture)
    team = models.ForeignKey("team.Team")
    player = ChainedForeignKey(
      "team.TeamPlayer", 
      chained_field="team", 
      chained_model_field="team", 
      show_all=False,
      auto_choose=True,
      blank=True, null=True)

    class Meta:
        ordering = ["fixture", "team",]

    def __unicode__(self):
        return u'%s (%s)' % (self.fixture, self.player)

固定卡片

class FixtureRedCard(BaseModel):
    """
    A red card recorded against a match fixture
    """
    fixture = models.ForeignKey(Fixture)
    team = models.ForeignKey("team.Team")
    player = ChainedForeignKey(
      "team.TeamPlayer", 
      chained_field="team", 
      chained_model_field="team", 
      show_all=False,
      auto_choose=True,
      blank=True, null=True)

    class Meta:
        ordering = ["fixture", "team",]

    def __unicode__(self):
        return u'%s (%s)' % (self.fixture, self.player)

我想做的是将选择限制在Fixture上选择的团队a和团队b，对于fixtureredcard和fixturegoal类中的现场团队，我如何实现这一点

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谢谢您

请查看此示例。

您指的是在admin中限制ModelForm中的选择吗？或