我一整天都在为这事犯愁。似乎什么都没用。这是我的情况。在

我有一个Django表单，有两个字段：redirect_from，redirect_to。此表单有两个提交按钮：Validate和{}。当页面加载时，Submit被隐藏，只显示Validate。在

所以现在，当用户填充这两个字段并单击Validate时，我使用Ajax来确认这两个字段是相同的。如果是，则显示Save按钮。单击Save按钮应将表单保存到数据库中。我还添加了一个oninput监听器，这样在Ajax调用之后，如果用户试图更改数据，Save按钮将再次隐藏，他现在必须再次计算它。在

显然，使用Ajax应该很容易，但是我发现它非常困难和令人沮丧。到目前为止，我的代码是：

我的模板：form method="post">

{% csrf_token %}

{% include 'partials/form_field.html' with field=form.redirect_from %}

{% include 'partials/form_field.html' with field=form.redirect_to %}

Save

Validate

{% endblock %}

{% block extra_scripts %}

{{ block.super }}

$(document).ready(function() {

$("#submit").hide()

});

$('#id_redirect_to').on('input', function(){

$("#submit").hide()

});

console.log("hello")

//For getting CSRF token

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;

}

//For doing AJAX post

//When submit is click

$("#ajax_submit").click(function(e) {

console.log("Clicked")

e.preventDefault();

//Prepare csrf token

var csrftoken = getCookie('csrftoken');

//Collect data from fields

/*var email = $('#inputEmail').val();*/

var redirect_from= $('#id_redirect_from').val();

var redirect_to= $('#id_redirect_to').val();

console.log("URL from and to is", redirect_from, redirect_to)

/*var password = $('#inputPassword').val();*/

//Send data

$.ajax({

url : window.location.href, // the endpoint,commonly same url

type : "POST", // http method

data : { csrfmiddlewaretoken : csrftoken,

redirect_from : redirect_from,

redirect_to : redirect_to

/*password : password*/

}, // data sent with the post request

// handle a successful response

success : function(json) {

console.log(json); // another sanity check

//On success show the data posted to server as a message

if (json['redirect_success'] === 'true')

{

alert("They are the same!" +json['redirect_success'] +'!.' );

$("#submit").show()

}

else

{

$("#submit").hide() //Maybe display some error message in the future!

}

},

// handle a non-successful response

error : function(xhr,errmsg,err) {

console.log(xhr.status + ": " + xhr.responseText); // provide a bit more info about the error to the console

}

});

});

{% endblock extra_scripts %}

我的观点：

^{pr2}$

我得到了500: MultiValueDictKeyError at "'Save'"

有人能把我引向正确的方向吗？对ajax很陌生。在