在Django管理中按相关字段搜索

问题描述

我一直在查看文档 search_fields 来尝试搜索相关字段。

I've been looking at the docs for search_fields in django admin in the attempt to allow searching of related fields.

因此，这里有一些

# 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球队。我尝试将 Runner FK关系添加到搜索字段中，但在搜索时出现错误； TypeError：相关字段的查找无效：​​icontains

What I'd like is for the YearRecord admin to be able to search for the team which a runner belongs to. However as soon as I attempt to add the Runner FK relationship to the search fields I get an error on searches; TypeError: Related Field got invalid lookup: icontains

因此，这是我希望能够搜索关系的管理员设置。我确定这与文档匹配，但是我在这里误会了什么吗？这可以解决吗，并且 result__runner 可以扩展到 Runner 模型的团队字段中？

So, here is the admin setup where I'd like to be able to search through the relationships. I'm sure this matches the docs, but am I misunderstanding something here? Can this be resolved & the result__runner be extended to the team field of the Runner model?

# 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")

推荐答案

文档内容为：

这些字段应为某种文本字段，例如 CharField 或 TextField 。

应该使用'result__runner__team__name'。

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