貓鼬不存儲字段

Question

當我去檢查我的數據庫時，我無法看到那裏的studentNamer字段。它就像我從來沒有保存過它。看到明白髮生了什麼。爲什麼它會跳過一個字符串類型的字段，同時保存其他字符串類型的文件？

var mongoose = require('mongoose/'); 

var Schema = mongoose.Schema; 

var studentInfoSchema = new Schema({ 
    tty: String, 
    StudentNamer : String, 
    id : Number, 
    tt: String, 
    numberOfterms : Number 
}, {collection: 'studentInfoDatabaseModel'}); 



var studentInfoDatabaseModel=mongoose.model('studentInfoDatabaseModel', studentInfoSchema); 


    mongoose.connect('mongodb://localhost/sss'); 
var db=mongoose.connection; 

db 
    .on('error', console.error.bind(console, 'DB connection error.')) 
    .once('open', console.log.bind(console, 'DB Connection established.')); 
var newItem=new studentInfoDatabaseModel({ 
    tty:"kkk", 
    studentNamer : "sumiit", 
    id: 55, 
    tt: "dfdsffsdaaa", 
    numberOfterms: 4 
}); 
mongoose.saveToDb=function(){ 
    newItem.save(function(err,result){ 
      if(err){ 
       console.log("there was an err savin"); 
      } 
     }); 
} 

mongoose.findData=function(){ 
    var posts = db.model('studentInfoDatabaseModel'); 

    posts.find({id : 55}, function(err, calls) { 
     console.log(err, calls, calls.length); //prints out: null [] 0 
     var u1= calls[0].id; 
     var u= calls[0].studentName; 
    }); 
} 

exports.mongoose=mongoose; 

Answer 1

你宣佈它在架構作爲StudentNamer（注意「小號‘），但你試圖將其保存爲studentNamer : "sumiit"（注意’小號」），所以只是將其更改爲：

var studentInfoSchema = new Schema({ 
    tty: String, 
    studentNamer : String, 
    id : Number, 
    tt: String, 
    numberOfterms : Number 
}, {collection: 'studentInfoDatabaseModel'});