node.js - Querying sub documents mongoose nodejs -

i have below document structure in sample app

the models student , phone. have configured below

    var mongoose = compound.mongoose;      var phoneschema = new mongoose.schema({         type: string,         number: string     });      var studentschema =  new mongoose.schema({         name: string,         dept: string,         year: string,         phone: [phoneschema]         });      var phone = mongoose.model('phone',phoneschema);     var student = mongoose.model('student',studentschema);      phone.modelname = 'phone';     compound.models.phone = phone;      student.modelname = 'student';     compound.models.student = student; 

i able insert student document , multiple phone documents within student shown.

i trying query subdocument

compound.models.student.findone({ "name" : "prabhu" }, function(err, student){      console.log(student);     console.log("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");      ###########this line shows error, no method find 1 student.phone.     student.phone.findone({ "number" : "123456" }, function(err, phone){         console.log(phone);     });  }); 

please suggest best method it.

note : aware can loop through student.phone object, find not efficient way.

according documentation http://mongoosejs.com/docs/queries.html

you need pass on selectors if want use findone, function call like

compound.models.student.findone({ "name" : "prabhu" }, 'name dept', function(err, student)       {  //do want;  }); 

edited:

  compound.models.student.findone({ "name" : "prabhu","phone.number":1234 }, 'name dept', function(err,     student)       {  //do want;  });