如何解决Dropzone 显示现有文件？

我正在使用 Dropzone js 将图像上传到我的应用程序。这在插入页面上工作正常，但我需要能够编辑记录并添加或更改与记录关联的现有图像。整个应用程序使用 Laravel。

我正在尝试使用以下代码来实现这一点，但我不是 JS 专家，并且似乎无法使其正常工作，例如在我的设置中 displayExistingFile 未被识别为函数。我将如何根据现有代码执行此操作？

我正在尝试使用 var image_data 传入 init 函数中的现有文件；

   var uploadedDocumentMap = {};
            var uploadedOrder = 0;
            $(''#advert_images_zone'').dropzone({
                url: ''{{ route(''adverts.storeMedia'') }}'',method: ''post'',maxFilesize: 12,// MB
                maxFiles: 6,dictDefaultMessage: ''Drop images anywhere to upload (6 images Max)'',acceptedFiles: ".jpeg,.jpg,.png,.gif",thumbnailWidth: 100,thumbnailHeight: 100,addRemoveLinks: true,previewsContainer: ".dropzone-previews",previewTemplate: ''<li><figure><img data-dz-thumbnail /><i title="Remove Image"data-dz-remove ></i></figure></li>'',headers: {
                    ''X-CSRF-TOKEN'': "{{ csrf_token() }}"
                },success: function (file,response) {
                    $(''form'').append(''<input type="hidden" name="advert_images[]" value="'' + response.name + ''">'');
                    uploadedOrder++;
                    uploadedDocumentMap[file.name] = {name:response.name,order:uploadedOrder}
                   // console.log(uploadedDocumentMap);
                    $(''#image_order'').val(JSON.stringify(uploadedDocumentMap));
                },removedfile: function (file) {
                    var name = ''''
                    if (typeof file.file_name !== ''undefined'') {
                        name = file.file_name
                    } else {
                        name = uploadedDocumentMap[file.name].name
                    }

                    var url = ''{{ route(''adverts.removeMedia'') }}'';

                    $.ajax({
                        type: "POST",url : url,data: {name : name,"_token": "{{ csrf_token() }}",}
                    }).done(function (data) {
                        file.previewElement.remove();
                        delete uploadedDocumentMap[file.name];
                        $(''#image_order'').val(JSON.stringify(uploadedDocumentMap));
                        $(''form'').find(''input[name="advert_images[]"][value="'' + name + ''"]'').remove();
                    }).fail(function () {
                        console.log(''Image Could not be removed'');
                    });
                },init: function() {
                    var myDropzone = this;
                    this.on("maxfilesexceeded",function(file){
                        file.previewElement.remove();
                    });

                    var image_data = JSON.parse($(''#image_json'').val());

                    $.each(image_data,function(key,value)
                    {
                        var mockFile = {
                            name: value.name,size: value.size
                        };

                        var path = "{{asset (''storage/ad_images/'')}}";
                        console.log(mockFile);
                        myDropzone.options.addedfile.call(myDropzone,mockFile);
                        myDropzone.options.thumbnail.call(myDropzone,mockFile,path + "/thumbnails/" + value.name);
                        myDropzone.options.complete.call(myDropzone,mockFile);
                        myDropzone.options.success.call(myDropzone,mockFile);
                    });
                }
            });

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。

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        <asp:Content ID="headContent" ContentPlaceHolderID="Headplaceholder" runat="server">
    <link href="/_scripts/dropzone-5.7.0/dist/dropzone.css" rel="stylesheet" />
    <script type="text/javascript" src="/_scripts/dropzone-5.7.0/dist/dropzone.js"></script>
</asp:Content>
 <form action="/file/upload"id="BulkUploadForm">
            <divid="BulkUploadPackageButton" />
        </form>

    $(document).ready(function () {
        Dropzone.autodiscover = false;
        $("#BulkUploadPackageButton").dropzone({
            url: "/file/post",paramName: "file",maxFilesize: 10,upLoadMultiple: true,addRemoveLinks: true,accept: function (file,done) {
                if (file.name == "justinbieber.jpg") {
                done("Naha,you don''t.");
                }
                else { done(); }
            }
        });

    });