CODEWITHSUNDEEP
node.jsmongodbrequirejs
Manish Bansal
Manish Bansal

Reputation: 185

Passing object instance in nodejs via require

I am new to node and struggle hard to achieve an objective where i can return an object instance to the caller method.

Please note : object instance is getting created in a non blocking callback, and I want to pass this object back to the main module from where this has been invoked, I am able to achieve this in the same file (file b.js) but not in the main file (file a.js) using require.

example code in file b.js 

var object1 = require('object1.js')
  function createobject(){
     object1.someFunction(err,function(myobj){
        //retrun myobj to the caller function; 
         return myobj;
    });
   }
module.exports = createobject;

In a.js 

var b = require('b.js');
var myobj = b.createObject(); 
//call some method of myobj

Please suggest experts, Thanks, Manish Bansal

Upvotes: 0

Views: 1467

Answers (1)

Setthase
Setthase

Reputation: 14398

This is typical problem to someone new. You're trying to return something from async function - which doesn't work. Use callback or promises instead:

file b.js

function createobject(next){
   object1.someFunction(err,function(myobj){
      //retrun myobj to the caller function; 
       next(myobj);
  });
}

file a.js

b.createObject(function (myobj) {
  // call some method of myobj
});

Upvotes: 2

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