Django：HttpResponseRedirect不通过RequestContext（）？ [英] Django: HttpResponseRedirect doesnt pass RequestContext()?

问题描述

我目前正在使用的是：

基本上，我正在尝试将未登录的用户重定向到登录页面。

What I'm currently using is:

return render_to_response('login.html', context_instance=RequestContext(request))

但是，在主页上留下网址。我想要重定向到/ accounts / login /，但是当我使用

But that leaves the url at the homepage. I'd like to have it redirect to /accounts/login/, but when I use

return HttpResponseRedirect('/accounts/login/')

我收到错误

Key 'username' not found in <QueryDict: {}>

我明白，这意味着我需要有

I understand that to mean that I do need to have

context_instance=RequestContext(request))

有没有正确的重定向，仍然通过RequestContext？

Is there anyway to have a proper redirect, and still pass RequestContext along?

推荐答案

RequestContext 只用于在渲染模板时将值传递给模板引擎。目的地视图不应该依赖于起始视图的 RequestContext ，它应该能够生成它自己的RequestContext。

RequestContext is only used to pass values to the template engine when a template is rendered. The destination view shouldn't depend on the RequestContext from the originating view, it should be able to generate it's own RequestContext.

在某些情况下，您需要在这样的视图之间传递值。在这些情况下，您可以使用querystring值来执行此操作。例如...

There are situations however where you need to pass values between views like this. In these situations you can use querystring values to do so. For example...

def originating_view(request, *args, **kwargs):
    return HttpResponseRedirect('/accounts/login/?username=%s&next=%s' % (username, request.path)

def destination_view(request, *args, **kwargs):
    # Get the username from the querystring
    username = request.GET.get('username', None)
    next = request.GET.get('next', '/')

    if username:
        # ...

（请注意，假设您要保留用户名的原因是将其预先填充到登录表单中。如果您正在执行实际登录，则需要使用POST，以使用户名和密码不会记录在URL中的纯文本）。

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