显示选择为

Question

如何使用MPTT在Django管理中将类别显示为树？在

我让它以树的形式显示类别列表：

但当我试图创建一篇新文章时，它不起作用：

如何使其渲染为树选择？在

这是我的模型：

# -*- 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')
    ...