自定义Admin views与反向解析Django Admin URLs

学习http://www.ianlewis.org/en/reversing-django-admin-urls后记录(翻译了部分)

Django 1.1开始支持 reversing django admin urls 与specifying custom admin views功能

代码如下:

class ItemAdmin(admin.ModelAdmin):
    list_display    = ('title', 'date','published')
    exclude         = ['clean_content',]
    list_filter     = ('feed',)
    search_fields   = ('title','clean_content')
    list_per_page   = 20

    model = Item

    def save_model(self, request, obj, form, change):
        obj.clean_content = strip_tags(obj.content)
        obj.save()

    def admin_update_feeds(self, request):
        from lifestream.feeds import update_feeds
        #TODO: Add better error handling
        update_feeds()
        return HttpResponseRedirect(
                reverse("admin:lifestream_item_changelist")
        )

    def get_urls(self):
        from django.conf.urls.defaults import *
        urls = super(ItemAdmin, self).get_urls()
        my_urls = patterns('',
            url(
                r'update_feeds',
                self.admin_site.admin_view(self.admin_update_feeds),
                name='admin_update_feeds',
            ),
        )
        return my_urls + urls

admin.site.register(Item, ItemAdmin)

 

关键的部分是get_urls函数与admin_update_feeds view.get_urls函数用于增加自定义的url.自定义admin_update_feeds视图函数用于更新lifestream的feeds,并重定向到item的修改列表视图.为了获取这个目标url,使用了reverse()函数,反向解析"admin:lifestream_item_changelist(模式为"<namespace>:<app>_<model>_changelist"),来获取对应的url.

 

模板:

通过重载默认的admin template,创建了一个按钮,用于更新feeds.模板如下:

{% extends "admin/change_list.html" %}
{% load adminmedia admin_list i18n %}

{% block object-tools %}
{% if has_add_permission %}
<ul class="object-tools">
  <li><a href="{% url admin:admin_update_feeds %}">{% blocktrans with cl.opts.verbose_name|escape as name %}Update Items{% endblocktrans %}</a></li>
  <li><a href="add/{% if is_popup %}?_popup=1{% endif %}" class="addlink">{% blocktrans with cl.opts.verbose_name|escape as name %}Add {{ name }}{% endblocktrans %}</a></li>
</ul>
{% endif %}
{% endblock %}

 

 

这里使用{% url admin:admin_update_feeds %}来获取自定义视图函数的url.