opt for download link

routers/repo/modelarts.go

@@ -256,7 +256,7 @@ func NotebookShow(ctx *context.Context) {
 		result.LatestUpdateTime = time.Unix(int64(result.UpdateAt/1000), 0).Format("2006-01-02 15:04:05")
 	}
 
-	var datasetDownloadLink string
+	datasetDownloadLink := "-"
 	if ctx.IsSigned {
 		if task.Uuid != "" && task.UserID == ctx.User.ID {
 			attachment, err := models.GetAttachmentByUUID(task.Uuid)
@@ -265,7 +265,7 @@ func NotebookShow(ctx *context.Context) {
 			}
 		}
 	}
-	
+
 	ctx.Data["datasetDownloadLink"] = datasetDownloadLink
 	ctx.Data["task"] = task
 	ctx.Data["jobID"] = jobID