如果第一个字段是关联字段的查询 ，会报错，有什么解决的方法吗？？

{"data": "iffUser.nickName", "bSortable": true}

不行啊还是不出来？？？

     "columns": [
                    {"data": "iffArticle.title", "bSortable": true},
                    {"data": "iffUser.nickName", "bSortable": true},
                    {"data": "appraiseTime", "bSortable": true},
            ],
            "columnDefs": [
                {
                    "render": function (data, type, row) {
                        return '<div class="btn-group"><button type="button" class="btn btn-default btn-xs dropdown-toggle" data-toggle="dropdown">' +
                                ' <i class="ti-settings"></i> <span class="ti-angle-down"></span></button><ul class="dropdown-menu" role="menu">' +
                                '<li><a href="${base}/platform/iff/user/appraise/detail/' + row.id + '" data-toggle="modal" data-target="#dialogDetail">${msg["globals.button.detail"]}</a></li>' +
                                '<li><a href="${base}/platform/iff/user/appraise/edit/' + row.id + '" data-pjax>${msg["globals.button.update"]}</a></li>' +
                                '<li class="divider"></li>' +
                                '<li><a href="javascript:;" onclick="del(\'' + row.id + '\')">${msg["globals.button.delete"]}</a></li>' +
                                '</ul></div>';
                    },
                    "targets": 3
                },
                {
                    "render": function (data, type, row) {
                        if (row.iffArticle) {
                            return row.iffArticle.title;
                        }
                        return '我是空白字符串';
                    },
                    "targets": 0
                }
            ]
        });

这个是显示的内容啊改成一样，都变成时间了

 "columns": [
                    {"data": "iffArticle.title", "bSortable": true},
                    {"data": "iffUser.nickName", "bSortable": true},
                    {"data": "appraiseTime", "bSortable": true},
            ],