Dropzone.js：从数据库中删除图像 - Laravel

Question

我有表user：

• ID
• 图像

我使用dropzone.js和laravel上传图片。 为了将图像添加到数据库，它非常好，但我想在数据库中上传后删除图像。

当我点击Remove file时，它会显示警报错误，如图所示

查看：

<form action="{{ url('/upload_image') }}" class="dropzone" id="my-dropzone">                     
    {{ csrf_field( ) }}
</form>
<script> 
            Dropzone.options.myDropzone = {
              addRemoveLinks: true,
              init: function() {
              this.on("removedfile", function(file) {

                          var name = file.name;   
                          //alert(name);     
                          $.ajax({
                          type: 'POST',
                          url: "{{action('UserController@deleteFile')}}",
                          data: { 
                              image: name
                          },

                          success:function(data)
                          {
                           alert("success");

                          }
                          error: function(){
                            alert('error');
                          }

                      });
              });
            }
          };

        </script>

控制器：

public function upload_image(Request $request){

        $user = new User();
        $file = $request->file('file');
        $custom_file_name = uniqid().$file->getClientOriginalName();
        $path = $file->storeAs('public/',$custom_file_name);
        $user->image = $custom_file_name;
        $user->save();
        return redirect('upload/create');

    }

    public function deleteFile(Request $request){
        $title=$request->image;
        $user = User::where('image','=',$title)->delete();

        return ['success' => 'success'];
    }