在Django管理员中,我非常喜欢能够在列表显示中显示可编辑的ManyToManyField。
它不一定需要是完整的ManyToManyField控件 - 能够只保存一个值对于列表显示的目的来说已经足够了(尽管底层值本质上是多对多的)。
我的模型看起来像这样:
class Item(models.Model):
name = models.CharField(max_length=500)
colour = models.ManyToManyField(Colour, related_name='primary_colour')
如果我在admin.py
中尝试此操作:
class ItemAdmin(admin.ModelAdmin):
list_display = ('name', 'colour')
list_editable = ('colour')
然后我收到此错误:
'ItemAdmin.list_display[6]', 'colour' is a ManyToManyField which is not supported.
是否有任何方式我可以在列表显示中显示可编辑的ManyToManyField以进行快速编辑?
我找到了这个相关问题,该问题解释了如何在列表显示中显示值,但不可编辑:ManyToManyField widget in a django admin change list?
答案 0 :(得分:2)
Django默认情况下不允许在ModelAdmin的list_editable中添加ManyToManyField。因此,我们需要重写模型管理方法。
在查看模型时,您需要按照以下步骤操作,以便在列表显示页面中编辑ManyToManyField。
在apps/forms.py中,您需要定义需要在列表显示页面中进行编辑的ManyToMany字段。如下,
from django import forms
from app.models import Item
class ItemChangeListForm(forms.ModelForm):
# here we only need to define the field we want to be editable
colour = forms.ModelMultipleChoiceField(queryset=Colour.objects.all(),
required=False)
在app/admin.py中,您需要覆盖模型admin的方法。如下,
from django.contrib import admin
from django.contrib.admin.views.main import ChangeList
from app.models import Item
from app.forms import ItemChangeListForm
class ItemChangeList(ChangeList):
def __init__(self, request, model, list_display,
list_display_links, list_filter, date_hierarchy,
search_fields, list_select_related, list_per_page,
list_max_show_all, list_editable, model_admin):
super(ItemChangeList, self).__init__(request, model,
list_display, list_display_links, list_filter,
date_hierarchy, search_fields, list_select_related,
list_per_page, list_max_show_all, list_editable,
model_admin)
# these need to be defined here, and not in ItemAdmin
self.list_display = ['action_checkbox', 'name', 'colour']
self.list_display_links = ['name']
self.list_editable = ['colour']
class ItemAdmin(admin.ModelAdmin):
def get_changelist(self, request, **kwargs):
return ItemChangeList
def get_changelist_form(self, request, **kwargs):
return ItemChangeListForm
admin.site.register(Item, ItemAdmin)
现在,所有人都准备检查更改,运行服务器并为电影模型检查django admin。您可以直接从列表显示页面编辑ManyToMany字段。
注意:如果您打算使用列表中可编辑的多轮多对多ToManyFields,则需要在settings.py中设置DATA_UPLOAD_MAX_NUMBER_FIELDS。
答案 1 :(得分:1)
您可以轻松地向管理网址添加自定义视图,并添加所需的html / javascript / ajax。这是基础知识:
class ItemAdmin(admin.ModelAdmin):
# regular stuff
def render_foo(self, obj):
# add this to your list_display
html = '<stuff><input/submit action></stuff>'
return mark_safe(html)
def get_urls(self):
urls = super(ItemAdmin, self).get_urls()
extra_urls = patterns('',
(r'^process_foo/$', self.admin_site.admin_view(self.process_foo)),
)
return extra_urls + urls
def process_foo(self, request):
if not request.is_ajax():
raise Http404
foo = request.GET.get("attr")
# process m2m
# return some json