Laravel 和 Dropzone - 如何在服务器端获取文件

Question

我正在尝试在 laravel 项目中使用 dropzone，但我无法在服务器端获取文件。

我的刀片 html 代码：

{!! Form::open(['id' => 'create-intervention-form', 'url' => '/create-intervention', 'method' => 'post', 'class' => '']) !!}
   <div id="multimedia" class="data new dropzone">

   </div>
   <div class="btn-new-bottom">
      <a href="#new-intervention">Criar Intervenção</a>
   </div>
{!! Form::close() !!}

在 jquery 中我输入了这段代码：

$("div#multimedia").dropzone({
          url: "/create-intervention",
          paramName: "file", // The name that will be used to transfer the file
          maxFilesize: 1024,
          autoProcessQueue: false
        });

要提交表单，我需要提交一个 jquery 函数。在控制器中，我尝试获取 $files[] = Input::file('file'); 但这返回 null。

控制器：

public function store(Request $request)
    {
      $rules = array(
      );

      // do the validation ----------------------------------
      // validate against the inputs from our form
      $validator = Validator::make(Input::all(), $rules);

      // check if the validator failed -----------------------
      if ($validator->fails())
      {

          // get the error messages from the validator
          $messages = $validator->messages();

          return redirect()->back()->withErrors($validator)->withInput();
      }
      else
      {
        $files[] = Input::file('file');

        var_dump($files);
      }
};

我该怎么做？我想使用 dropzone 上传多个文件，但只是在我提交表单时。在控制器中，我必须将每个文件保存在目录中，并将文件名保存在数据库中。

谢谢

Answer 1

添加到你的表单打开方法'files' => true

documentation

Answer 2

您也可以尝试在循环中获取请求的文件：

控制器：

public function store(Request $request)
{
  $rules = array();

  // do the validation ----------------------------------
  // validate against the inputs from our form
  $validator = Validator::make(Input::all(), $rules);

  // check if the validator failed -----------------------
  if ($validator->fails())
  {
      // get the error messages from the validator
      $messages = $validator->messages();

      return redirect()->back()->withErrors($validator)->withInput();
  }
  else
  {
    foreach( $request->file('file') as $file ){        

            $filename = $file->store('file');
            #saves the file
            $array_images_names[] = $filename;
    }

    var_dump($files);
  }
};

JavaScript（允许接受多个文件）

    var post_url_images = $('#post_url_images').val(); 
    Dropzone.options.frm_drop_images = {
    paramName: "file", // The name that will be used to transfer the file
    maxFilesize: 1024,
    // The configuration we've talked about above
    url: post_url_images,
    autoProcessQueue: false,
    uploadMultiple: true,
    parallelUploads: 100,
    maxFiles: 100,

    // The setting up of the dropzone
    init: function() {
        var myDropzone = this;

        // First change the button to actually tell Dropzone to process the queue.
        this.element.querySelector("button[type=submit]").addEventListener("click", function(e) {
        // Make sure that the form isn't actually being sent.
        e.preventDefault();
        e.stopPropagation();
        myDropzone.processQueue();
        });

        // Listen to the sendingmultiple event. In this case, it's the sendingmultiple event instead
        // of the sending event because uploadMultiple is set to true.
        this.on("sendingmultiple", function() {
        // Gets triggered when the form is actually being sent.
        // Hide the success button or the complete form.
        });
        this.on("successmultiple", function(files, response) {
        // Gets triggered when the files have successfully been sent.
        // Redirect user or notify of success.
        });
        this.on("errormultiple", function(files, response) {
        // Gets triggered when there was an error sending the files.
        // Maybe show form again, and notify user of error
        });
    }

  };

尝试使用您的 HTML 表单，如下所示：

<div class="dropzone dropzone-previews" id="frm_drop_images" class="dropzone" method="post" action="{{ url('/admin/products/upload/image') }}"></div>
<!-- hiddent field to set where to post the images -->
<input type="hidden" name="post_url_images" id="post_url_images" value="{{ url('/create-intervention') }}" >
<div class="btn-new-bottom">
<a href="#new-intervention">Criar Intervenção (Não precisa usar este botão)</a>
</div>