Javascript POST到Django使用Ajax无法正常工作

时间:2016-01-12 18:38:56

标签: javascript jquery python ajax django

我正在尝试通过ajax发送帖子请求,但是ajax似乎没有被解雇。在create_post()中,console.log("i'm clicked");会显示在控制台中。 monthly_query(request)中的打印语句不会显示在日志中。

HTML:

<form method="POST" action="/create_post/" id="post-form">
<select id = "datasource">
    <option value="data1">data1</option>
    <option value="data2">data2</option>
</select>
<select id="sourceyear">
    {% for year in years %}
    <option value="Years">{{ year }}</option>
    {% endfor %}
</select>
<select id="sourcemonth">
    <option value="Monthly">1</option>
    <option value="Monthly">2</option>
    <option value="Monthly">3</option>
    <option value="Monthly">4</option>
</select>
<input type="button" value="Submit" onclick="create_post()"/>
{% csrf_token %}
</form>

使用Javascript:

$(document).ready(function() { 

 $('#post-form').on('submit', function(event) {
    event.preventDefault();
});

function create_post() {
        console.log("i'm clicked");
        $.ajax({
            url: "create_post/",
            cache : "false",
            type: "POST",
            dataType: 'json',
            data : { 'source': $("#datasource").val(), 'year': $("#sourceyear").val(), 'month': $("#sourcemonth").val() },

            success : function(json) {
                console.log("my json")
                $("#outgoingvalue").prepend(json.result);   
            },

            error: function(xhr,errmsg,err) {
                console.log(xhr.status + ": " + xhr.responseText);
            }  
        });
    }
}

views.py:

def monthly_query(request):
    print("request made")
    if request.method == 'POST':
        print("post request success")

urls.py:

urlpatterns = patterns (
    '',
    url(r'^$', views.metrics, name='metrics'),
    url(r'^api/graphs', views.graphs, name='graphs'),
    url(r'^create_post/$', views.monthly_query, name='create_post'),
)

编辑: 额外的javascript:

 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]);
                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) {

        return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
    }

    function sameOrigin(url) {
        //test that a given url is a same-origin URL
        //url could be relative or scheme relative or absolute
        var host = document.local.host;
        var protocol = document.location.protocol;
        var sr_origin = '//' + host;
        var origin = protocol + sr_origin;

        return (url == origin || url.slice(0, origin.length + 1) == origin +'/') ||
            (url == sr_origin || url.slice(0, sr_origin.length + 1) == sr_origin + '/') ||
            !(/^(\/\/|http:|https:).*/.test(url));
    }

    $.ajaxSetup({
        beforeSend: function(xhr, settings) {
            if(!csrfSafeMethod(settings.type) && sameOrigin(settings.url)) {

                xhr.setRequestHeader("X-CSRFToken", csrftoken);
            }
        }
    });

编辑: 输出beforeSend: function(xhr, settings) console.log(settings);:Object {url:&#34; / create_post /&#34;,type:&#34; POST&#34;,isLocal:false,global:true,processData:true,async:true,contentType :&#34; application / x-www-form-urlencoded; ...&#34;,接受:对象,内容:Object,responseFields:Object,14 more ...}

1 个答案:

答案 0 :(得分:1)

问题 - 1

在您的ajax请求中,您要求create_post/这是一个相对网址。因此,如果您在/home/,请求将发送到/home/create_post/。您应该使用相对于root的路径。所以它应该是/create_post

问题 - 2&amp; 3

print会在您的控制台上显示该消息,但它不会将该字符串作为html响应发送。

你需要处理csrf令牌。最好将其作为请求的一部分传递或免除它。

from django.views.decorators.csrf import csrf_exempt
@csrf_exempt
def monthly_query(request):
    print("request made")
    if request.method == 'POST':
        return HttpResponse("post request success")

您需要从视图中返回HttpResponse,以便将其作为来自服务器的响应发送。 csrf_exempt装饰器将使视图免于csrf保护。

您可以像这样导入:

from django.http import HttpResponse