if in search mongoose 的问题

Question

我在 mongodb 中执行搜索后验证有问题，如果它搜索我查阅的信息，但如果没有，它 returns 一个空文档，这个是我的代码和我在邮递员中的查询 > image

exports.search = (req, res) => {
    //sacar el string a buscar
    var searchString = req.params.search;
    //find or
    Document.find({ "$or": [
            { "num_oficio": { "$regex": searchString, "$options": "i"}},
            { "ins_juridico": { "$regex": searchString, "$options": "i"}},
            { "fecha_recepcion": { "$regex": searchString, "$options": "i"}},
            { "remitido": { "$regex": searchString, "$options": "i"}},
            { "origen": { "$regex": searchString, "$options": "i"}},
            { "direccion": { "$regex": searchString, "$options": "i"}},
            { "director": { "$regex": searchString, "$options": "i"}},
            { "asunto": { "$regex": searchString, "$options": "i"}},
            { "estatus": { "$regex": searchString, "$options": "i"}},
            { "observacion": { "$regex": searchString, "$options": "i"}}
    ]}).sort([['fecha_recepcion', 'descending']]).exec((err, document) => {
        if (err) {
            return res.status(500).send({
                status: 'error',
                message: 'Error en la peticion'
            });
        }
        if (!document || document.lenght <= 0) {
            return res.status(404).send({
                status: 'error',
                message: 'No hay documentos relacionados con tu busqueda!'
            });
        }
        return res.status(200).send({
            status: 'succes',
            document
        });
    });
}

Answer 1

你打错了，lenght 而不是 length:

if (!document || document.lenght <= 0) {

if in search mongoose 的问题

Problems with if in search mongoose

javascript

mongoose

mongodb

express

postman