Web应用程序中出于多种原因需要页面重定向.您可能希望在发生特定操作时将用户重定向到另一个页面，或者基本上是出现错误.例如，当用户登录您的网站时，他经常被重定向到主要主页或他的个人仪表板.在Django中，重定向是使用'重定向'方法完成的.
'redirect'方法作为参数:您希望重定向到的字符串作为字符串A视图的名称.
到目前为止，myapp/views类似于以下内容;
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)让我们更改hello视图以重定向到djangoproj ect.com和我们的viewArticle重定向到我们的内部'/myapp/articles'.为此，myapp/view.py将更改为 :
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，首先我们从django.shortcuts导入重定向，并且为了重定向到Django官方网站，我们只需将完整的URL传递给'redirect'方法为字符串，对于第二个示例(viewArticle视图)，'redirect'方法将视图名称及其参数作为参数.
访问/myapp/hello，会给你以下屏幕 :
并访问/myapp/article/42，会给你以下屏幕 :
通过添加permanent = True参数，还可以指定"重定向"是临时的还是永久的.用户将看不到任何差异，但这些是搜索引擎在您的网站排名时考虑的细节.
还要记住我们在映射时在url.py中定义的'name'参数URL :
url(r'^articles/(?P\d{2})/(?P\d{4})/', 'viewArticles', name = 'articles'),该名称(此处文章)可用作'重定向的参数'方法，然后我们的viewArticle重定向可以改为 :
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")
到 :
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")
注意 : 还有一个生成URL的功能;它的使用方式与重定向相同; '反向'方法(django.core.urlresolvers.reverse).此函数不返回HttpResponseRedirect对象，而只返回包含使用任何传递参数编译的视图的URL的字符串.
