Django頁面重定向

myapp/views 到現在為止如下所示 −

def hello(request):
   today = datetime.datetime.now().date()
   daysOfWeek = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
   return render(request, "hello.html", {"today" : today, "days_of_week" : daysOfWeek})

def viewArticle(request, articleId):
   """ A view that display an article based on his ID"""
   text = "Displaying article Number : %s" %articleId
   return HttpResponse(text)

def viewArticles(request, year, month):
   text = "Displaying articles of : %s/%s"%(year, month)
   return HttpResponse(text) 

讓我們修改hello，以重定向到 djangoproject.com ，以及 viewArticle 重定向到我們內部的 '/myapp/articles'。myapp/view.py將修改為如下： 

from django.shortcuts import render, redirect
from django.http import HttpResponse
import datetime

# Create your views here.
def hello(request):
   today = datetime.datetime.now().date()
   daysOfWeek = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
   return redirect("https://www.djangoproject.com")

def viewArticle(request, articleId):
   """ A view that display an article based on his ID"""
   text = "Displaying article Number : %s" %articleId
   return redirect(viewArticles, year = "2045", month = "02")

def viewArticles(request, year, month):
   text = "Displaying articles of : %s/%s"%(year, month)
   return HttpResponse(text) 

在上面的例子中，我們首先從Django導入重定向(redirect)。快捷方式並重定向到Django的官方網站上，我們只需使用完整URL到“redirect”方法作為字串，在第二例子(在viewArticle視圖)'redirect'方法取視圖名字和它的參數作為參數。

訪問/myapp/hello，會顯示如下的螢幕-

並訪問 /myapp/article/42，會給出下麵的螢幕-

也可以指定“redirect”是否是暫時的還是永久性的，加入permanent = True參數。用戶看到不會有什麼區別，但這些都是細節，搜索引擎網站排名時考慮到。

我們在url.py定義“name”參數在映射URL時−

url(r'^articles/(?P\d{2})/(?P\d{4})/', 'viewArticles', name = 'articles'), 

該名稱(這裏的文章)可以被用作“redirect”方法的實參，那麼 viewArticle 重定向可以修改 -

def viewArticle(request, articleId):
   """ A view that display an article based on his ID"""
   text = "Displaying article Number : %s" %articleId
   return redirect(viewArticles, year = "2045", month = "02")

修改為 −

def viewArticle(request, articleId):
   """ A view that display an article based on his ID"""
   text = "Displaying article Number : %s" %articleId
   return redirect(articles, year = "2045", month = "02") 

注 - 還有一個函數生成 URL; 它是用在相同的方式重定向; “reverse”方法(django.core.urlresolvers.reverse)。這個函數不返回HttpResponseRedirect對象，而僅僅包含URL和任何傳入的參數編譯視圖的字串。