问题描述
假设我在 Django 1.4 中有一个简单的博客应用程序:
Let's say I have a simple blog app in Django 1.4:
class Post(models.Model):
title = …
published_on = …
tags = models.ManyToManyField('Tag')
class Tag(models.Model):
name = …
即一个帖子有很多标签.在 Django 管理员上，如果我在 fields 中为 PostAdmin<包含 tags，我会得到一个不错的小 <select multi>/代码>.有没有一种简单的方法可以在 TagAdmin 中包含帖子列表(作为简单的 <select multi>)?我尝试将 fields = ['name', 'posts'] 放入 TagAdmin 并得到 ImproperlyConfigured 错误.(post_set 的结果相同).
i.e. a post has many tags. On the Django admin, I get a nice little <select multi> if I include tags in the fields for the PostAdmin. Is there an easy way to include the list of the posts (as a simple <select multi>) in the TagAdmin? I tried putting fields = ['name', 'posts'] in the TagAdmin and got an ImproperlyConfigured error. (same result for post_set).
我对 Django 没问题，所以可以创建一个适当的 AdminForm 和 Admin 对象，但我希望有一个 Right Way 来做.
I'm alright with Django, so could whip up a proper AdminForm and Admin object, but I'm hoping there a Right Way to do it.
推荐答案
这可以通过自定义表单来实现.
This is possible to do with a custom form.
from django.contrib import admin
from django import forms
from models import Post, Tag
class PostAdminForm(forms.ModelForm):
tags = forms.ModelMultipleChoiceField(
Tag.objects.all(),
widget=admin.widgets.FilteredSelectMultiple('Tags', False),
required=False,
)
def __init__(self, *args, **kwargs):
super(PostAdminForm, self).__init__(*args, **kwargs)
if self.instance.pk:
self.initial['tags'] = self.instance.tags.values_list('pk', flat=True)
def save(self, *args, **kwargs):
instance = super(PostAdminForm, self).save(*args, **kwargs)
if instance.pk:
instance.tags.clear()
instance.tags.add(*self.cleaned_data['tags'])
return instance
class PostAdmin(admin.ModelAdmin):
form = PostAdminForm
admin.site.register(Post, PostAdmin)
如果您想要垂直堆叠的小部件，可以将其中的 False 替换为 True.
That False in there can be replaced with a True if you want vertically stacked widget.
这篇关于在 Django Admin 中将 ManyToManyWidget 添加到 ManyToManyField 的反面的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持跟版网！