如何在django-admin中显示Foreign Key的选择？ [英] How to display Foreign Key's choices in django-admin?

问题描述

我有与django-admin面板有关的小问题。
我有两个模型：

I have small problem related to django-admin panel. I have 2 models:

from django.db import models

class Subject(models.Model):
    subject = models.CharField(max_length=30, choices=[('P', 'Personal'), ('W', 'Work')])

    def __str__(self):
        return self.subject

class BlogPost(models.Model):
    id = models.AutoField(unique=True, primary_key=True)
    subject = models.ForeignKey(Subject, on_delete=models.CASCADE)
    text = models.TextField(null=False)
    pic = models.ImageField(upload_to='static/img/', default='static/img/no-image.png')
    date = models.DateTimeField()

    def __str__(self):
        return self.subject

但是，当我尝试创建博客帖子时，在管理面板中，下拉菜单不显示任何主题的选择。我需要编辑管理渲染功能吗？

But in admin panel whenever I try to create blog post, dropdown menu doesn't show any of subject's choices. Do I need to edit admin render function ?

推荐答案

顺便说一句，你必须先添加主题，他们可以出现在您的外键选择中。您可以通过以下方式获得相同的结果：

By the way you have done it you have to first add the subjects themselves so they can appear in your foreign key choices. you could have the same results by:

class BlogPost(models.Model):
    id = models.AutoField(unique=True, primary_key=True)
    subject = models.CharField(max_length=30, choices=[('P', 'Personal'), ('W', 'Work')])

    def __str__(self):
        return self.subject

想要ForeignKey吗？

What do you want the ForeignKey for?

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