在laravel中上傳AJAX文件

Question

自從過去兩天以來，我一直在努力讓ajax文件上傳工作在lavvel 4中，我現在好運。

我的jquery塊

$(document).ready(function(){

$('#basicModuleImage').change(function () {
    sendFile(this.files[0]);
});

function sendFile(file) {

  $.ajax({
    type: 'post',
    url: '/upload',
    data: file,
    enctype: 'multipart/form-data',
    success: function (data) {
            alert(data);
    },
    processData: false,
    contentType: file.type
  });
}
 });

HTML塊

 <form method="post" action="">
 <input type="file" id="basicModuleImage" name="basicModuleImage" />
 </form>

LARAVEL PHP塊

Route::post('upload', function(){

return Response::json(array('a'=>var_dump(Input::all()),'b'=>var_dump($_FILES)));

});

我也嘗試過使用https://github.com/LPology/Simple-Ajax-Uploader，但這似乎與laravel有關。

JSON響應返回a和b都為null。

Answer 1

關鍵在於你的ajax請求。 在控制器中，您可以隨心所欲。

var form = document.forms.namedItem("yourformname"); // high importance!, here you need change "yourformname" with the name of your form
var formdata = new FormData(form); // high importance!

$.ajax({
    async: true,
    type: "POST",
    dataType: "json", // or html if you want...
    contentType: false, // high importance!
    url: '{{ action('yourController@postMethod') }}', // you need change it.
    data: formdata, // high importance!
    processData: false, // high importance!
    success: function (data) {

        //do thing with data....

    },
    timeout: 10000
});

Answer 2

實際上，您不能通過（基本）AJAX（XMLHttpRequest）發送文件。

你需要使用一些“iframe”上傳器或XMLHttpRequest2。
我會選擇XHR2。
這里是我與Laravel4一起使用的代碼部分的復制粘貼，就像一個魅力

/**
 * Read selected files locally (HTML5 File API)
 */
var filesToUpload = null;

function handleFileSelect(event)
{
    var files = event.target.files || event.originalEvent.dataTransfer.files;
    // Itterate thru files (here I user Underscore.js function to do so).
    // Simply user 'for loop'.
    _.each(files, function(file) {
        filesToUpload.push(file);
    });
}

/**
 * Form submit
 */
function handleFormSubmit(event)
{
    event.preventDefault();

    var form = this,
        formData = new FormData(form);  // This will take all the data from current form and turn then into FormData

    // Prevent multiple submisions
    if ($(form).data('loading') === true) {
        return;
    }
    $(form).data('loading', true);

    // Add selected files to FormData which will be sent
    if (filesToUpload) {
        _.each(filesToUpload, function(file){
            formData.append('cover[]', file);
        });        
    }

    $.ajax({
        type: "POST",
        url: 'url/to/controller/action',
        data: formData,
        processData: false,
        contentType: false,
        success: function(response)
        {
            // handle response
        },
        complete: function()
        {
            // Allow form to be submited again
            $(form).data('loading', false);
        },
        dataType: 'json'
    });
}

/**
 * Register events
 */
$('#file-input').on('change', handleFileSelect);
$('form').on('submit', handleFormSubmit);

Answer 3

嘗試使用FormData()

$(document).ready(function () {

    $('#basicModuleImage').change(function () {
        sendFile(new FormData($('form')[0]));
    });

    function sendFile(file) {
        alert(file.type);
        $.ajax({
            type: 'post',
            url: '/upload',
            data: file,
            success: function (data) {
                alert(data);
            },
            processData: false,
            contentType: false
        });
    }
});