Question

嗨，朋友，我的数据库中有这个架构

const impresionSchema = mongoose.Schema({
 id:{type:Number, required: true},
 ap:{type:String, required: true},
 mac_address:{type:String, required: true},
 campaniaId:{type:String, required: true}
}, {versionKey: false});

这是我对数据库的查询

router.get("/:start/:end", (req, res, next) => {

const start = parseInt(req.params.start);
const end = parseInt(req.params.end);
const unique = req.query.unique !== undefined;

Impresion.find({id:{$gte:start, $lte:end}}).then(impresiones => {
 res.status(200).json({
  message: "Impresiones fetched successfully!",
  impresiones: impresiones
  });
 });
});

Mongo不返回任何数据，但是根据查询有多个文档

**对不起我的英语

Answer 1

像这样使用它：

Impressions.find({id:{$gte:start, $lte:end}}).toArray().then(arr => {}).catch()

Answer 2

我认为您错过了导出模式，因此导出模式如下：-

var mongoose = require('mongoose');
var db = mongoose.createConnection(your hostname, you database name');

 const impresionSchema = mongoose.Schema({
 id:{type:Number, required: true},
 ap:{type:String, required: true},
 mac_address:{type:String, required: true},
 campaniaId:{type:String, required: true}
}, {versionKey: false});

var Impresion = db.model('Impresion', impresionSchema);
module.exports = Impresion;  // this is what you want

猫鼬查询错误不返回数据

2 个答案: