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Django-URL路由系統

message imp over def 基本用法 clas 獲取 module gem

django的路由系統:

一、基本用法:

1.path(‘index‘, views.index),
# 通過類的方式創建url映射
2.path(‘home‘, views.Home.as_view()),
# 通過正則表達式的方式 註意這種方式不能通過path的方式關聯,否則正則表達式無效,通過 from django.conf.urls import url,然後通過url(regx,views,kwargs,name)進行url的正則表達式的匹配
3.url(r‘detail-(\d+)‘,views.detail),
4.url(r‘detail-(\d+)-(\d+)‘,views.detail),
5.url(r‘detail-(?P<nid>\d+)‘,views.detail)

實戰:

1.通過url(r‘detail-(\d+)-(\d+)‘,views.detail)

  urls.py

urlpatterns = [
    url(r‘detail-(\d+)-(\d+)‘,views.detail),
   ]

  views.py

# 方式一:
def detail(request,nid,uid):
    pass

# 方式二:
def detail(request,*args,**kwargs):
    pass

以上方式,nid和uid關聯的參數,適合調用參數有關系,比如調用‘http://127.0.0.1:8080/detail-1-2‘,則 nid = 1, uid = 2;方式二的args = (1,2),kwargs = {}

可是這不是我們想要的,我們如何讓nid和uid和傳遞的參數關聯上,還是通過正則表達式解決參數關聯問題

2.通過url(r‘detail-(?P<nid>\d+)-(?P<uid>\d+)‘,views.detail)

  urls.py

urlpatterns = [
    url(r‘detail-(?P<nid>\d+)-(?P<uid>\d+)‘,views.detail)
]

  views.py

# 方式一:
def detail(request,nid,uid):
    pass

def detail(request,uid,nid):
  pass # 方式二: def detail(request,
*args,**kwargs): pass

這樣無論我們如何更換參數的位置,我們的獲取的nid都是‘/detail-1-2‘的第一個參數值,uid始終為第二個參數值;而才是方式二的參數變為 args=() kwargs={‘nid‘: 1,‘uid‘:2}

二、進階

1.name(對URL路由關系進行命名,以後可以根據名稱生成你想要的URL)

  urls.py

urlpatterns = [
    url(‘homemodule‘,views.home,name=‘m1‘),
    url(r‘disovermodule/(\d+)/(\d+)‘,views.discover,name=‘m2‘),
    url(r‘messagemodule/(?P<nid>\d+)/(?P<uid>\d+)‘,views.message,name=‘m3‘)    
]    

  views.py

def func(request,*args,**kwargs):
    from django.url import reverse
    
    url1 = reverse(‘m1‘)                          #/homemodule/
    url2 = reverse(‘m2‘,args=(1,2))             #/discovermodule/1/2
    url3 = reverse(‘m3‘,kwargs={‘nid‘:3,‘uid‘:4})    # /messagemodule/3/4

  xxx.html

{% url ‘m1‘ %}                #/homemodule 
{% url ‘m2‘ 1 2 %}          #/discovermodule/1/2
{% url ‘m3‘ nid=3 uid=4 %} #/messagemodule/3/4

註意獲取當前URL

request.path_info

Django-URL路由系統