Question

给出here的Django jQuery修复程序在iPad上不起作用。关于如何使其发挥作用的任何想法？

修复代码：

$(document).ajaxSend(function(event, xhr, settings) {
    function getCookie(name) {
        var cookieValue = null;
        if (document.cookie && document.cookie != '') {
            var cookies = document.cookie.split(';');
            for (var i = 0; i < cookies.length; i++) {
                var cookie = jQuery.trim(cookies[i]);
                // Does this cookie string begin with the name we want?
                if (cookie.substring(0, name.length + 1) == (name + '=')) {
                    cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
                    break;
                }
            }
        }
        return cookieValue;
    }
    function sameOrigin(url) {
        // url could be relative or scheme relative or absolute
        var host = document.location.host; // host + port
        var protocol = document.location.protocol;
        var sr_origin = '//' + host;
        var origin = protocol + sr_origin;
        // Allow absolute or scheme relative URLs to same origin
        return (url == origin || url.slice(0, origin.length + 1) == origin + '/') ||
            (url == sr_origin || url.slice(0, sr_origin.length + 1) == sr_origin + '/') ||
            // or any other URL that isn't scheme relative or absolute i.e relative.
            !(/^(\/\/|http:|https:).*/.test(url));
    }
    function safeMethod(method) {
        return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
    }

    if (!safeMethod(settings.type) && sameOrigin(settings.url)) {
        xhr.setRequestHeader("X-CSRFToken", getCookie('csrftoken'));
    }
});

修改

澄清：

以下是js：

的示例

function foo() {
    data = {some:"datahere"}
    jQuery.ajax({
        url: "urlhere",
        type: "POST",
        data: data,
        success: function() {
            // do something
        },
        error: function() {
            alert("Could not send ajax request with POST");
        }
    })
}

在常规浏览器中，永远不会调用错误函数，但是在iPad上我总是会收到警报（至少在iOS sim中）。当我看到django日志时，我看到这些请求是用代码403返回的。如果添加@csrf_exempt装饰器，一切都可以在iPad上运行，所以我很确定它是csrf失败的。

Answer 1

iPad由于某些原因并不总是获得CSRF cookie的价值，因此jQuery csrf修复无效，因为它无法读取cookie的值。

解决方案是确保将cookie发送到客户端，并在视图上使用ensure_csrf_cookie装饰器与需要csrf的客户端进行交互。

示例：

# models.py
from django.views.decorators.csrf import csrf_protect, csrf_exempt, requires_csrf_token, ensure_csrf_cookie

@ensure_csrf_cookie
def fooview(request):
    # do something here
    pass

Django jQuery CSRF修复在iPad上不起作用

1 个答案: