我想找到一种获取类别和子类别的方法 显示在管理员中,以多重选择的形式显示。
像:
parent
----child1
----child2
parent2
----child3
我是否必须制作自定义字段,或者是否已有解决方案 周围?
模型是:
class Category(models.Model):
def __unicode__(self):
return self.name_en
name = models.CharField(_('name'), max_length=255, null=True)
slug = models.SlugField(_('slug'), db_index=True, unique=True)
parent = models.ForeignKey('self', blank=True, null=True, related_name='child')
description = models.TextField(_('description'), null=True)
答案 0 :(得分:3)
您不需要自定义字段,只需要自定义窗口小部件。这是我做的一个示例小部件。它是未经测试的,所以请将其视为伪代码:)
from django.forms.widgets import SelectMultiple
from django.db.models import *
class Category(Model):
name = TextField()
parent = ForeignKey('self', null=True, related_name='children'):
class CategoryTreeWidget(SelectMultiple):
def render_options(self, choices, selected_choices):
selected_choices=set([force_unicode(v) for v in selected_choices])
top_level_cats = Category.objects.filter(parent=None)
def _render_category_list(cat_list, level=0):
for category in cat_list:
self.render_option(selected_choices, category.pk, (("---"*level + " ") if level) + category.name)
def _render_category_list(category.children, level+1)
_render_category_list(top_level_cats)
class Article(Model):
title = TextField()
body = TextField()
category = ManyToMany('Category', widget = CategoryTreeWidget)