day98

    #根据名称反向生成url
from django.conf.urls import url,include
from django.contrib import admin
from django.shortcuts import HttpResponse,redirect
from app01 import urls
from niubin.service import v1

def index(request):
    from django.urls import reverse
    #根据名称反向生成url
    # test_url = reverse('xx')    #反向生成url没参数
    # test_url = reverse('xx',args=(2,9))    #反向生成url有参数

    test_url = reverse('xx',kwargs={'a2':2,'a1':9})    #反向生成url命名参数
    print(test_url)

    return HttpResponse('index')

def test(request):
    return HttpResponse('test')

urlpatterns = [
    url(r'^index/', index),
    url(r'^test/asdf/asdf/asf/asdf/asf', test,name='xx'),
    url(r'^test/asdf/(d+)/asf/(d+)/asf', test,name='xx'),
    url(r'^test/asdf/(?P<a1>d+)/asf/(?P<a2>d+)/asf', test,name='xx'),
    url(r'nb/', v1.site.urls),]

{% extends 'admin/base_site.html' %}
{% load il8n admin_urls static admin_list %}
{% block extrastyle %}

    {% url 'xx' %}  #前端使用反向生成url
    {% url 'xx' 2 9 %}  #有参数
    {% url 'xx' a1=2 a2=9 %}  #有名字

{% endblock %}

#namespace有值时必须传入

def index(request):
    from django.urls import reverse
    #根据名称反向生成url
    # test_url = reverse('xx')    #反向生成url没参数
    # test_url = reverse('xx',args=(2,9))    #反向生成url有参数

    # test_url = reverse('xx',kwargs={'a2':2,'a1':9})    #反向生成url命名参数
    # print(test_url)

    url_test = reverse('x1:tst')    #必须传入namespace
    print(url_test)

    return HttpResponse('ok')

def test(request):
    return HttpResponse('test')

urlpatterns = [
    # url(r'^index/', index),
    # # url(r'^test/asdf/asdf/asf/asdf/asf', test,name='xx'),
    # # url(r'^test/asdf/(d+)/asf/(d+)/asf', test,name='xx'),
    # url(r'^test/asdf/(?P<a1>d+)/asf/(?P<a2>d+)/asf', test,name='xx'),
    url(r'^app01/',([
                     url(r'^index/', index,name='idx'),
                     url(r'^test/', test,name='tst'),
                    ],'x1','x1')), #如果url出现了namespace(有值),必须传入]

#多层namespace,从外到内，每个都要传

from django.conf.urls import url,include
from django.contrib import admin
from django.shortcuts import HttpResponse,redirect
from app01 import urls
from niubin.service import v1
from django.urls import reverse

def index(request):
    from django.urls import reverse
    #根据名称反向生成url
    # test_url = reverse('xx')    #反向生成url没参数
    # test_url = reverse('xx',args=(2,9))    #反向生成url有参数

    # test_url = reverse('xx',kwargs={'a2':2,'a1':9})    #反向生成url命名参数
    # print(test_url)

    url_test = reverse('x1:x2:tst')    #如果有多个从外到内，每个都要传
    print(url_test)

    return HttpResponse('ok')

def test(request):
    return HttpResponse('test')

urlpatterns = [
    # url(r'^index/', index),
    # # url(r'^test/asdf/asdf/asf/asdf/asf', test,name='xx'),
    # # url(r'^test/asdf/(d+)/asf/(d+)/asf', test,name='xx'),
    # url(r'^test/asdf/(?P<a1>d+)/asf/(?P<a2>d+)/asf', test,name='xx'),
    url(r'^app01/',([
                     url(r'^index/', ([
                                          url(r'^index/', index, name='idx'),
                                          url(r'^test/', test, name='tst'),
                                    ],'x2','x2')),

                    ],'x1','x1')), #如果url出现了namespace(有值),必须传入
    url(r'nb/', v1.site.urls),]

#changelist_view 生成器减少循环
 
   def changelist_view(self,request,*args,**kwargs):

        data_list = self.model_class.objects.all() #获取到所有的表对象

        def headers():  #把headers做成生成器，减少后端循环
            for v in self.list_display:
                verbose_name = self.model_class._meta.get_field(v).verbose_name
                # 获取到当前字段的verbose_name
                yield verbose_name


        context = {
            'data_list':data_list,
            'list_display':self.list_display,
            'headers':headers,
        }



        return render(request,'changelist.html',headers()) #传入生成器