mongoose 查询不出来数据怎么办?

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这是代码

var mongoose = require ('mongoose');
var db = mongoose.createConnection ('mongodb://xxxxxxxxxxxxxxxxx/test');

db.on ('error', function (error ) {
    console.log (error );
});

var downloadSchema = new mongoose.Schema ({
    assets :  {type: String},
    body :  {type: String},
    tag_name :  {type: String},
    date :  {type: String},
});

var mongooseModel = db.model ('download', downloadSchema );

mongooseModel.find (function (error,result ){
    if (error ) {
        console.log (result );
    } else {
        console.log (result ); // result 为空
    }
    db.close ();
});

查询出来的数据为 [],不知道原因出在哪里,求大大解决

17 replies • 2015-08-18 01:39:38 +08:00

minvacai

Aug 17, 2015

不会 js ，不过你的 find 里那个 if/else 有必要么...

w88975

Aug 17, 2015

@minvacai .... 写错了而已,不要在意这些细节 err 为空

minvacai

Aug 17, 2015

话说，你 result 是哪里来的， find 里没有具体的查询语句，也没见哪里调用 find 了啊

w88975

Aug 17, 2015

@minvacai 这是 mongoose 的查询,表在
``var mongooseModel = db.model ('download', downloadSchema );``

db.model ('download'.... 这里的 download 是表

Dongdong36

Aug 17, 2015

数据库中的集合名称叫什么

minvacai

Aug 17, 2015

汗
我是用 pymongo 的，还是不胡说八道给你添乱了

Dongdong36

Aug 17, 2015

@w88975 集合名确认一下是否为“ downloads ”

chaim

Aug 17, 2015

mongoose.connect ('mongodb://xxxxxxxxxxxxxxxxx/test');

var downloadSchema = new mongoose.Schema ({
assets : {type: String},
body : {type: String},
tag_name : {type: String},
date : {type: String},
});

var mongooseModel = mongoose.model ('download', downloadSchema );

mongoose.connection.on ('connected', function () {
mongooseModel.find (function (error,result ){
if (error ) {
console.log (result );
} else {
console.log (result ); // result 为空
}
});
});

我理解大致是这样子的

w88975

Aug 17, 2015

@Dongdong36 download 这个表存在