Django - 在admin list_display函数中包含来自foreignkey的数据 [英] Django - Include data from foreignkey in admin list_display function

问题描述

我有两个模型和一个管理模型：

I have two models and one admin model:

class Person(models.Model):

    firstname = models.CharField(maxlength=50)
    surname = models.CharField(maxlength=50)

class Friends(models.Model):

    person1 = models.ForeignKey("Person")
    person2 = models.ForeignKey("Person")
    friendship_made = models.DateField()

class PersonAdmin(admin.ModelAdmin):
    list_display = ["firstname", "surname"]

我想显示list_display中的人的朋友。我知道如果我在 Person 模型中有外键字段，我可以使用双下划线来引用它。 person2__surname 。但是不知道如何在另外一张表中使用外键。

I want to show the friend of the person in the list_display. I know if I had the foreignkey field in the Person model I could use the double underscore to reference it e.g. person2__surname. But not sure how to do it when thr foreign key is in the other table.

在我的系统中，一个人一次只能和一个人交朋友，如果外键在人物模型中，但是我想要存储关于友谊的额外信息，如制作日期（firendship_made），那么这就是为什么我把它放在一个单独的模型中。任何建议？如果我不得不改变我的模型以获得最好的结果，我不介意。

In my system one person can only be friends with one person at a time so it would be better if the foreignkey was in the person model but I want to store extra info about the friendship such as the date it was made (firendship_made) so this is why I've put it in a seperate model. Any advise? If I have to change my models to get the best result I don't mind.

推荐答案

你需要创建一个这样的东西在你的FriendAdmin类中：

You need to create something like this in your FriendAdmin class:

class UserAdmin(admin.ModelAdmin):
    list_display = (..., 'get_reviews')

    def get_reviews(self, obj):
        return obj.book.review
    get_reviews.short_description = 'Review'

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