Mongoose not storing a field - node.js

Question

When i go and check my database ,i cant see the studentNamer field there. its like i am never saving it.cant seen to understand what is happening. Why would it be skipping one field which is of type string , while saving other files of type string?
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

You declared it in the schema as StudentNamer (note the "S") but you are trying to save it as studentNamer : "sumiit" (note the "s"), so just change it to:
var studentInfoSchema = new Schema({
tty: String,
studentNamer : String,
id : Number,
tt: String,
numberOfterms : Number
}, {collection: 'studentInfoDatabaseModel'});