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Django- 反向生成url

时间:2018-01-17 23:35:55      阅读:238      评论:0      收藏:0      [点我收藏+]

标签:系统   技术   过程   login   rtc   16px   nbsp   def   导入   

Django中提供了一个关于URL的映射的解决方案,

1.客户端的浏览器发起一个url请求,Django根据URL解析,把url中的参数捕获,调用相应的试图,获取相应的数据,然后返回给客户端显示

2.通过一个视图的名字,再加上一些参数和值,逆向获取相应的URL

第一个就是平常的请求有URLconf来解析的过程,

第二个叫做,url的逆向解析,url逆向匹配,url的逆向查阅,等

Django提供了不同的层级的url逆向处理工具:

1.在模板templates中,使用url标记,如:{% url %}

2.在Python代码中,使用django.core.urlresolvers.reverse()方法

3.在更高一层级的处理url中,用get_absolute_url()方法

新一个项目diango

访问longin页面跳转到 index页面

app01 views.py 

技术分享图片
from django.shortcuts import render,redirect,HttpResponse

def index(request):
    return HttpResponse(Index)

def login(request):
    return HttpResponse(longin)
View Code

urls.py 

技术分享图片
from django.conf.urls import url
from app01 import views

urlpatterns = [
    url(r^index/, views.index),
    url(r^login/, views.login),

]
View Code

在平常做法

views.py
def login(request): return redirect(/index/)
如果usr 很长 
urlpatterns = [
    url(r^index/xxxxx/xxx/xxx/xxx/xx/, views.index),
    url(r^login/, views.login),
]

可以用平常做法:

 app01 views.py

def login(request):
    return redirect(/index/xxxxx/xxx/xxx/xxx/xx/)

这种方法看上去不是那么的友好, 我们用usl 别名的方式

 导入reverse 

app01/views.py

from django.urls import reverse
def login(request):
    url = (inx)
    return redirect(url)

urls.py

urlpatterns = [
    url(r^index/xxxxx/xxx/xxx/xxx/xx/, views.index,name=inx),
]

通过 usl名称,反向生成usl 

include方法来实现路由转发功能

urls.py

url(r‘^cmdb/‘, include’(crm.urls)’),

 crm/urls.py 

from django.conf.urls import url,include
from django.contrib import admin
from crm import views
urlpatterns = [
    url(r^hosts/, views.hosts,name=hosts),
]

crm/views.py

def hosts(request):
   return HttpResponse(主机列表)

通过这个cmdb前缀分发,分发到自己的urls中,好处可以将各种的业务拆分

反向生成时,使用reverse(‘namespace:name’)

 新建app,  monitor openstack , 

url(r^monitor/, include(monitor.urls,namespace=m)),
url(r^openstack/, include(openstack.urls,namespace=o)),

monitor/ulrs.py

from django.conf.urls import url,include
from django.contrib import admin
from monitor import views
urlpatterns = [
    url(r^hosts/, views.hosts,name=hosts),
]

monitor/views.py

from django.shortcuts import render,HttpResponse
def hosts(request):
    return HttpResponse(监控系统,主机列表)

openstack /ulrs.py

from django.conf.urls import url,include
from django.contrib import admin
from openstack import views
urlpatterns = [
    url(r^hosts/, views.hosts,name=hosts),
]

openstack /views.py

from django.shortcuts import render,HttpResponse

def hosts(request):
    return HttpResponse(OpenStack,主机列表)

登录成功时跳转到 openstack/主机列表页面
def login(request):
    return HttpResponse(Login)
    # 跳转到 openstack主机列表页面
    # return redirect(‘/openstack/hosts/‘)
    url = reverse(o:hosts)

include本质 【就是元组,一级一级做分发】

 urls.py

技术分享图片
from monitor import views as mviews
from openstack import views as oviews
    # /monitor/hosts/
    url(r^login/, views.login),
        url(r^monitor/, ([
                                url(r^hosts/,mviews.hosts,name=hhhhh),
                                url(r^c1/,mviews.hosts),
                                url(r^x1/, ([
                                                url(r^xxx1/,mviews.hosts),
                                                url(r^xxx2/,mviews.hosts,name=xx2),
                                                url(r^xxx3/,mviews.hosts),
                                                url(r^xxx4/,mviews.hosts),
                                            ],None,None)),
                                url(r^c2/,mviews.hosts),
                                url(r^c3/,mviews.hosts),
                            ],None,mm)),
        url(r^openstack/, ([
                                url(r^hosts/,oviews.hosts,name=hhhhh),
                                url(r^c1/,oviews.hosts),
                                url(r^c2/,oviews.hosts),
                                url(r^c3/,oviews.hosts),
                            ],None,oo)),
]
View Code

views.py

    # 跳转到 openstack主机列表页面
     url = reverse(oo:hhhhh)
     url = reverse(mm:uu:xx2)

动态生成url

views.py

def login(request):
    return HttpResponse(Login)

urls.py

urlpatterns = [
    url(r^login/, views.login),
]
for i in range(10): temp = [] for j in range(5): temp.append(url(r^inner_%s/ % j, views.login)) v = url(r^login_%s/ %i, (temp,None,None)) urlpatterns.append(v)

 

Django- 反向生成url

标签:系统   技术   过程   login   rtc   16px   nbsp   def   导入   

原文地址:https://www.cnblogs.com/qiangyuge/p/8306534.html

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