node.js - querying one collection value and send other collections values -

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everyone, have 2 schema 1 age , second questions trying find age age scheme , match number of age , if age true sends me question second collection loading... , displaying nothing

1). node js

var agegroupquiz = require('../models/agegroupschema.js'); var questionquiz = require('../models/question.js');   exports.agegroupcontroller = function(req,res,next){       try{      var userobj = {};     var projection1 = '-id age_group.age_group_5.max_age';     var projection2 = '-id question';         var = agegroupquiz.findone(userobj,projection1);         var age = 'a.age_group.age_group_5.max_age';         if(age===5){          questionquiz.find(userobj,projection2,function(err, data){             if(err){              console.log('getquestions : error while getting questions ' + err);              return next(err);             }              //console.log(question);              res.send(question);         });          }else{console.log("error");}      }catch(err){         console.log('error while saving reuslt ' +err);         return next(err);     }   }

2). mongodb schema

 a). var mongoose = require('mongoose');       module.exports = (function agegroup () {       var schema = mongoose.schema;      var agegroup = new schema({      age_group : {      age_group_5: {          _id:{type:string},         max_age:{type:number}      }     }    });     var results = mongoose.model('age', agegroup);      return results;      })();      b). var mongoose = require('mongoose');      module.exports = (function question () {     var schema = mongoose.schema;     var question = new schema({     question:{type:array,      _id:{type:number},     title:{type:string},     options:{type:array},     result:{type:array},     feedback:{type:string}     },     metadata:{         type:string,         category:string,         age_group:string,         location:string     }     });   var results = mongoose.model('userquestion', question);   return results;   })();


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