将选择显示为树

Question

如何使用MPTT在Django管理员中将类别显示为树？

我让它以树形式显示类别列表：

但是当我尝试创建一篇新文章时它不起作用：

如何将其渲染选择为树？

这是我的模特：

# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.db import models
from mptt.models import MPTTModel, TreeForeignKey
from ckeditor.fields import RichTextField
from taggit.managers import TaggableManager
import os


class Category(MPTTModel):

    name = models.CharField(u'Заголовок', max_length=100, unique=False)
    parent = TreeForeignKey('self', null=True, blank=True, related_name='children', db_index=True,
                            verbose_name=u'Родитель')

    class Meta:
        verbose_name = u'Мероприятие'
        verbose_name_plural = u'Мероприятия'

    class MPTTMeta:
        order_insertion_by = ['name']

    def __unicode__(self):
        return self.name


class Article(models.Model):
    category = models.ForeignKey(Category, on_delete=models.CASCADE, blank=False, verbose_name=u'Раздел')
    title = models.CharField(u'Содержание', max_length=120, blank=False)
    content = RichTextField(u'Содержание', blank=False)
    tags = TaggableManager(u'Тэги')

    class Meta:
        verbose_name = u'Новость'
        verbose_name_plural = u'Новости'

Answer 1

您应该在您的孩子模型中使用TreeForeignKey：

class Article(models.Model):
    category = TreeForeignKey(Category, on_delete=models.CASCADE, blank=False,
    null=False, verbose_name=u'Раздел')
    ...