$ pull适用于mongo shell但不适用于nodejs(expressjs)代码

时间:2018-05-27 13:41:25

标签: node.js mongodb mongoose mongo-shell robo3t

该集合包含以下文档:

{
"_id" : ObjectId("5b02df7a45b504151cb42c40"),
"email" : "micro@gmail.com",
"appointments" : [ 
    {
        "patient_name" : "patient_1",
        "patient_id" : 1.0,
        "time" : 1528915447.0
    }, 
    {
        "patient_name" : "patient_2",
        "patient_id" : 2.0,
        "time" : 1529915447.0
    }
]}

以下操作将删除带有patient_name =" patient_2" (当我在robomongo工具或mongo shell上试用它时,第二个文件)

db.getCollection('doctors').update(
{ email: "micro@gmail.com" },
{ $pull: { appointments: {patient_name: "patient_2", patient_id:2, time: 1529915447} } } 
)

但是,当我尝试使用节点api进行同样的操作时,它只是将响应发送为{success: true}但是没有从db中删除该特定文档

app.post('/secure/doctor/reject_appointment', function(req, res){
    console.log(req.body)
    if(!req.user){
        res.json({success: false,message:"Unauthorized"});;
    return;
    }
    Doctor.findByIdAndUpdate(req.user.id,
        {$pull: { appointments: {patient_name: req.body.patient_name, patient_id:req.body.patient_id, time: req.body.time}}},
        {safe: true, upsert: true},
        function(err, doc) {
            if(err){
            console.log(err);
            res.json({
                success:false
                }).end();
            }else{
                console.log(doc.appointments)
                res.json({
                success:true
                }).end();
            }
        }
    );
});

请求正文:{ patient_name: 'patient_2', patient_id: 2, time: 1529915447 }无法解决问题。

1 个答案:

答案 0 :(得分:1)

请更新MongoDB版本,只有一个唯一参数可以提取数据,您的查询才能正常工作:另外,请保持NPM和节点更新。

Upgrade MongoDB version to 3.2

app.post('/secure/doctor/reject_appointment', function(req, res){
    console.log(req.body)
    if(!req.user){
        res.json({success: false,message:"Unauthorized"});;
    return;
    }
    Doctor.findByIdAndUpdate(req.user.id,
        {$pull: { appointments: {patient_id:req.body.patient_id}}},
        {safe: true, upsert: true},
        function(err, doc) {
            if(err){
            console.log(err);
            res.json({
                success:false
                }).end();
            }else{
                console.log(doc.appointments)
                res.json({
                success:true
                }).end();
            }
        }
    );
});

希望这有帮助。