在django admin中搜索相关字段

Question

我一直在django admin中查看the docs for search_fields，试图允许搜索相关字段。

所以，这是我的一些模型。

# models.py
class Team(models.Model):
    name = models.CharField(max_length=255)


class AgeGroup(models.Model):
    group = models.CharField(max_length=255)


class Runner(models.Model):
    """
    Model for the runner holding a course record.
    """
    name = models.CharField(max_length=100)
    agegroup = models.ForeignKey(AgeGroup)
    team = models.ForeignKey(Team, blank=True, null=True)


class Result(models.Model):
    """
    Model for the results of records.
    """
    runner = models.ForeignKey(Runner)
    year = models.IntegerField(_("Year"))
    time = models.CharField(_("Time"), max_length=8)


class YearRecord(models.Model):
    """
    Model for storing the course records of a year.
    """
    result = models.ForeignKey(Result)
    year = models.IntegerField()

我想要的是YearRecord管理员能够搜索跑步者所属的团队。但是，一旦我尝试将Runner FK关系添加到搜索字段，我就会在搜索时出错; TypeError: Related Field got invalid lookup: icontains

所以，这里是管理员设置，我希望能够搜索关系。我确定这与文档匹配，但我在这里误解了什么吗？这可以解决，并将result__runner扩展到Runner模型的团队领域吗？

# admin.py
class YearRecordAdmin(admin.ModelAdmin):
    model = YearRecord
    list_display = ('result', 'get_agegroup', 'get_team', 'year')
    search_fields = ['result__runner', 'year']

    def get_team(self, obj):
        return obj.result.runner.team
    get_team.short_description = _("Team")

    def get_agegroup(self, obj):
        return obj.result.runner.agegroup
    get_agegroup.short_description = _("Age group")