Django 身份验证和 Ajax - 需要登录的 URL [英] Django authentication and Ajax - URLs that require login

问题描述

我想为我的 Django 编码网站添加一些 Ajax-niceness.

I want to add some Ajax-niceness to my Django-coded website.

在我的 Django 代码中，我使用 django.contrib.auth.decorators 中的 @login_required 装饰器来标记哪个视图需要身份验证.未通过身份验证的用户单击它时的默认行为是将他/她重定向到登录页面，然后传递目标页面.

In my Django code, I use the @login_required decorator from django.contrib.auth.decorators to mark which view requires authentication. The default behavior when a not authenticated user clicks it is to redirect him/her to login page, and then pass the target page.

我在某些网站上看到的并且非常喜欢的是，当用户单击指向仅限登录用户访问的位置的链接时，他/她不会被重定向到登录页面，而是会收到一个弹出窗口(通过JavaScript) 要求他/她登录或注册.没有重定向部分，因此如果用户认为他/她真的不喜欢该网站而浪费时间注册，则无需使用后退"键.

What I saw on some sites, and really liked, is that when user clicks a link leading to a place restricted to logged-only users, instead of getting redirected to a login page, he/she gets a popup window (via JavaScript) asking him/her to log in or register. There's no redirection part, so no need for a user to use the "back" key if he/she decides he/she really doesn't like the website enough to waste the time registering.

那么，问题是:您将如何管理自动将某些链接标记为受限"的任务，以便 JavaScript 可以处理它们的 onclick 事件并显示请登录"弹出窗口?

So, the qestion is: how would you manage the task of automatically marking some links as "restricted" so JavaScript can handle their onclick event and display a "please log in" popup?

推荐答案

我面临着同样的问题，并且和你一样，我想要一个简单的装饰器来包裹 Django ajax 视图，以便在相同的情况下处理身份验证我有其他看法的方式.对我来说似乎很有希望的一种方法是将这样的装饰器与 JavaScript 结合使用，以在响应中查找特定值.

I am facing the same issue, and, like you, I would like a simple decorator to wrap around a Django ajax view in order to handle authentication in the same way that I have other views. One approach that seems promising to me is to use such a decorator in conjunction with JavaScript that looks for a certain value in the response.

这是装饰器的第一次修订稿:

from functools import wraps

def ajax_login_required(view_func):
    @wraps(view_func)
    def wrapper(request, *args, **kwargs):
        if request.user.is_authenticated():
            return view_func(request, *args, **kwargs)
        json = simplejson.dumps({ 'not_authenticated': True })
        return HttpResponse(json, mimetype='application/json')
    return wrapper

这是视图:

@ajax_login_required
def ajax_update_module(request, module_slug, action):
    # Etc ...
    return HttpResponse(json, mimetype='application/json')

这里是 JavaScript (jQuery):

And here is the JavaScript (jQuery):

$.post('/restricted-url/', data, function(json) {
    if (json.not_authenticated) {
        alert('Not authorized.');  // Or something in a message DIV
        return;
    }
    // Etc ...
});

<小时>

EDIT:按照建议，我尝试使用 functools.wraps.我实际上并没有在工作代码中使用过这个装饰器，所以请注意可能的错误.

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EDIT: I've attempted to use functools.wraps, as suggested. I have not actually used this decorator in working code, so beware of possible bugs.

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