urls 基本使用

通过导入include模块，实现对层级结构url的路由

urls.py ---> 主路由

from django.conf.urls import url,include
from django.contrib import admin
from karlapp import views


urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^login/$', views.login),
    url(r'^api/', include('karlapp.url_api')),      # 相当于分路由api/xxx的汇聚点
]

url_api.py ---> 分路由

from django.conf.urls import url
from karlapp import view_api


urlpatterns = [
    url(r'^list.html', view_api.list),
    url(r'^add.html', view_api.add),
    url(r'^update.html', view_api.update),
    url(r'^delete.html', view_api.delete),
]

views.py

from django.shortcuts import render,HttpResponse
from karlapp import models


def login(request):
    if request.method == 'GET':
        a = [1,]
        obj_li = models.UserInfo.objects.all()
        # obj_li = models.UserInfo.objects.filter(username='test')

        for obj in obj_li:
            print('username ---> ', obj.username)
            print('password ---> ', obj.password)

    return render(request, 'login.html', locals())

def index(request):
    return render(request, 'index.html', )

def list(request):
    return HttpResponse("list page")

def add(request):
    return HttpResponse("add page")

def update(request):
    return HttpResponse("update page")

def delete(request):
    return HttpResponse("delete page")

urls 补充使用

1. URL正则表达式匹配

正则表达式元字符
例如：如下两种等价
url(r'^(?P<num>\d+)/update.html', views.update),
url(r'^(?P<num>[0-9]+)/update.html', views.update),

2. URL传递参数

固定格式：(?P<var_name>*reg*)

url_api.py

from django.conf.urls import url
from karlapp import views


urlpatterns = [
    url(r'^list.html', views.list),
    url(r'^add.html', views.add),
    # url(r'^(?P<num>[0-9]+)/update.html', views.update),
    url(r'^(?P<num>\d+)/update.html', views.update),      # 参数num
    url(r'^delete.html', views.delete),
]

views.py

...略

def update(request, num):      # 传参
    print('update ---> num', num)      # 打印参数
    return HttpResponse("update page")

...略

浏览器中输入 http://127.0.0.1:8000/api/321/update.html，pycharm打印如下：

[19/Dec/2018 14:13:16] "GET /api/321/update.html HTTP/1.1" 200 11
update ---> num 321