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DjangoでAjaxする時の注意点

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DjangoでAjax

通常Djangoは{% csrf_token %}をテンプレートで書いていないとcsrftokenをクッキーにセットしない。

確実にセットするためには

from django.views.decorators.csrf import ensure_csrf_cookie

@ensure_csrf_cookie
def view(request):
    pass

みたいな感じで使う。

JS

以下コピペ

// using jQuery
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;
}
var csrftoken = getCookie('csrftoken');

function csrfSafeMethod(method) {
    // these HTTP methods do not require CSRF protection
    return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
}
$.ajaxSetup({
    crossDomain: false, // obviates need for sameOrigin test
    beforeSend: function(xhr, settings) {
        if (!csrfSafeMethod(settings.type)) {
            xhr.setRequestHeader("X-CSRFToken", csrftoken);
        }
    }
});

使う

$.ajax({
    type: 'POST',
    url: "/ajax/",
}).done(function(data){
    alert('success!!');
}).fail(function(data){
    alert('error!!!');
});
yat1ma30
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