elementUI上传文件更新

Question

点击编辑时初始化上传文件的fileList

   handleEdit: function (index, row) {
    this.fileList = [
        {
            name: row.title,
            url: row.url,
            status: 'finished'
        }
    ];
    this.zDialog.title = '编辑文件';
    this.zDialog.show = true;
            },

点击更新触发:on-change="handleChange"

 //上传文件变化
    handleChange(file, fileList){
        this.fileList = [];
        this.fileList = [{
            name: file.name,
            url: file.url,
        }];
    }

但是我用this.$refs.uploadFile.submit(); 触发覆盖默认上传函数时触发不了:http-request="uploadFileGo"；去点handleChange方法中的代码之后可以，请问这个问题应该怎么解决，才能做到更新上传的时候列表的文件变化，且可以触发上传？