1

我正在尝试创建一个页面,用户可以在其中添加标题然后上传图像或 2。我正在使用 dropzone 和 Laravel,我试图让它看起来不同,我让它看起来像http:// www.dropzonejs.com/bootstrap.html

我遇到的问题是我需要向 js 文件添加一个 url,但它一直给我这个错误

POST http://crud.test/portfolios 419(未知状态)

在我的开发工具中的预览中

{消息:“”,异常:“Symfony\Component\HttpKernel\Exception\HttpException”,...}

我知道在 Laravel 我会使用

{{ csrf_field() }}

而且我无法将图像上传到我在控制器中指定的文件夹或将图像保存到我的数据库中。

我想要的是如何让我的图像上传到文件夹并保存到我的数据库中。

我的刀片:

<form action="{{ route('portfolios.store') }}">
    {{ csrf_field() }}

    <div class="form-group">
        <label>Title</label>
        <input type="title" name="title" class="form-control">
    </div>

    <div id="actions" class="row">
        <div class="col-lg-7">
            <span class="btn btn-success fileinput-button dz-clickable">
                <i class="glyphicon glyphicon-plus"></i>
                <span>Add files...</span>
            </span>

            <button type="button" class="btn btn-info start">
                <i class="glyphicon glyphicon-upload"></i>
                <span>Start upload</span>
            </button>

            <button type="reset" class="btn btn-warning cancel">
                <i class="glyphicon glyphicon-ban-circle"></i>
                <span>Cancel upload</span>
            </button>
        </div>

        <div class="col-lg-5">
            <span class="fileupload-process">
                <div id="total-progress" class="progress progress-striped active total-upload-progress" role="progressbar" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0">
                    <div class="progress-bar progress-bar-success" style="width:0%;" data-dz-uploadprogress=""></div>
                </div>
            </span>
        </div>
    </div>

    <div class="table table-striped files" id="previews">
        <div id="template" class="file-row dz-image-preview">
            <div>
                <span class="preview">
                    <img data-dz-thumbnail />
                </span>
            </div>

            <div>
                <p class="name" data-dz-name></p>
                <strong class="error text-danger" data-dz-errormessage></strong>
            </div>

            <div>
                <p class="size" data-dz-size></p>
                <div class="progress progress-striped active" role="progressbar" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0">
                    <div class="progress-bar progress-bar-success" style="width:0%;" data-dz-uploadprogress></div>
                </div>
            </div>

            <div>
                <button class="btn btn-info start">
                    <i class="glyphicon glyphicon-upload"></i>
                    <span>Start</span>
                </button>

                <button data-dz-remove class="btn btn-warning cancel">
                    <i class="glyphicon glyphicon-ban-circle"></i>
                    <span>Cancel</span>
                </button>

                <button data-dz-remove class="btn btn-danger delete">
                    <i class="glyphicon glyphicon-trash"></i>
                    <span>Delete</span>
                </button>
            </div>
        </div>
    </div>

    <button type="submit" class="btn btn-primary">Submit</button>
</form>

我的 main.js:

var previewNode = document.querySelector("#template");
previewNode.id = "";
var previewTemplate = previewNode.parentNode.innerHTML;
previewNode.parentNode.removeChild(previewNode);

var myDropzone = new Dropzone(document.body, { // Make the whole body a dropzone
    url: "/portfolios", // Set the url
    thumbnailWidth: 80,
    thumbnailHeight: 80,
    parallelUploads: 20,
    previewTemplate: previewTemplate,
    autoQueue: false, // Make sure the files aren't queued until manually added
    uploadMultiple: true,
    previewsContainer: "#previews", // Define the container to display the previews
    clickable: ".fileinput-button" // Define the element that should be used as click trigger to select files.
});

myDropzone.on("addedfile", function(file) {
    file.previewElement.querySelector(".start").onclick = function() { 
        myDropzone.enqueueFile(file); 
    };
});

myDropzone.on("totaluploadprogress", function(progress) {
    document.querySelector("#total-progress .progress-bar").style.width = progress + "%";
});

myDropzone.on("sending", function(file) {
    document.querySelector("#total-progress").style.opacity = "1";
    file.previewElement.querySelector(".start").setAttribute("disabled", "disabled");
});

myDropzone.on("queuecomplete", function(progress) {
    document.querySelector("#total-progress").style.opacity = "0";
});

document.querySelector("#actions .start").onclick = function() {
    myDropzone.enqueueFiles(myDropzone.getFilesWithStatus(Dropzone.ADDED));
};

document.querySelector("#actions .cancel").onclick = function() {
    myDropzone.removeAllFiles(true);
};

我的控制器:

public function store(Request $request)
{
    $portfolio = new Portfolio();

    $portfolio->fill($this->getSafeInput($request));

    if($request->hasFile('file'))
    {
        $names = [];
        foreach($request->file('file') as $image)
        {

            $destinationPath = 'portfolio_images/';
            $filename = $image->getClientOriginalName();
            $image->move($destinationPath, $filename);
            array_push($names, $filename); 
        }

        $portfolio->file = json_encode($names);
    }

    $portfolio->save();

    return redirect()->route('portfolios.index');
}

我的路线:

Route::get('/', function () {
    return view('welcome'); 
});

Auth::routes();

Route::get('/home', 'HomeController@index')->name('home');

Route::resource('/portfolios', 'PortfolioController');

我希望我已经正确解释了,如果我遗漏了任何信息,请告诉我

4

2 回答 2

6

问题是 Dropzone 会在您删除文件时自动发布您的文件。但它不包括它发布的请求中的任何其他字段 - 只是文件。所以你的 CSRF 令牌丢失了(就像你表单上的所有其他字段一样),Laravel 会抛出一个错误。

有几种方法可以解决这个问题。也许最简单的方法是将 CSRF 令牌添加到您的sending()偶数处理程序中发布的数据中。Dropzone文档甚至提到这样做

...您可以修改它们(例如添加 CSRF 令牌)...

因此,在您的代码中:

// First, include the 2nd and 3rd parameters passed to this handler
myDropzone.on("sending", function(file, xhr, formData) {

    // Now, find your CSRF token
    var token = $("input[name='_token']").val();

    // Append the token to the formData Dropzone is going to POST
    formData.append('_token', token);

    // Rest of your code ...
    document.querySelector("#total-progress").style.opacity = "1";
    file.previewElement.querySelector(".start").setAttribute("disabled", "disabled");
});

请注意,您的 CSRF 令牌(仍然在表单上未更改)现在无效 - 刚刚处理的 POST 请求意味着它将已更新。您删除的下一个文件将重新使用相同的令牌,它会失败。

更完整的解决方案是完全禁用文件发送,直到您点击提交按钮,然后一次发送所有文件和所有表单字段。为此,您必须禁用autoProcessQueue

autoProcessQueue = false,

接下来,由于队列不是自动处理的,您现在必须在提交表单时通过触发手动处理它。processQueue()提交表单时,您需要某种事件处理程序来触发:

// Event handler to fire when your form is submitted
$('form').on('submit', function(e) {
    // Don't let the standard form submit, we're doing it here
    e.preventDefault();

    // Process the file queue
    myDropzone.processQueue();
});

最后,您需要将您的 CSRF 令牌表单中的任何其他字段添加到 Dropzone 将发布的数据中:

myDropzone.on("sending", function(file, xhr, formData) {

    // Find all input values on your form
    var data = $('form').serializeArray();

    // Append them all to the formData Dropzone will POST
    $.each(data, function(key, el) {
        formData.append(el.name, el.value);
    });

    // Rest of your code ...
    document.querySelector("#total-progress").style.opacity = "1";
    file.previewElement.querySelector(".start").setAttribute("disabled", "disabled");
});
于 2017-12-19T08:21:39.533 回答
0

您的表单缺少文件上传的 enctype,enctype 属性指定表单数据在提交到服务器时应如何编码。所以将该属性添加到您的表单中:

<form action="/action_page_binary.asp" method="post" enctype="multipart/form-data">

并将方法指定为 post !

于 2017-12-19T08:11:23.300 回答