Spring code convert to DataTables. File exists

arnolddd97

I want to examine if the file exists.
If a file exists, 2 buttons will be unloaded

This is the spring code I want to convert to DataTables

<td th:if="${@videoRecordService.isFileExist(pickingHead.delivNoteNumber)}">
  <a th:href="${'/videoAdmin/videoDownload/'+pickingHead.delivNoteNumber}" 
        target="_blank" class="btn btn-default" th:text="#{download}"></a>
 <a href="#" th:attr="data-filename=${pickingHead.delivNoteNumber}" 
class="btn btn-default watch-video"  th:text="#{watch}"></a>
    </td>

 <td th:if="!${@videoRecordService.isFileExist(pickingHead.delivNoteNumber)}">

</td>

My current Datatbles code

"targets": [ 7 ],
                "render":function(data ,type, row, meta){

                        return '<a href="/videoAdmin/videoDownload/'+ row.delivNoteNumber+'"' +
                            '  target="_blank" class="btn btn-default" th:text="#{download}">Download</a>'+
                            '<a href="#" th:attr="data-filename='+row.delivNoteNumber+'"'+
                            'class="btn btn-default watch-video"  th:text="#{watch}">Watch</a>'


                }