module.exports与对象

Question

I'm starting with node.js and javascript server side. I think, maybe I got confused with the module.exports thing. And I'm pretty sure it's a noob issue.

I'm trying to do a simple task :

oAuth - controler [oAuth.js]

  module.exports = function() {
  return {
    tryLogin :function(Username,Password){

   }
  };
}

oAuth - dispatcher [route.js]

module.exports = function(app){


    app.post('/api/oAuth/login', function(req, res){
        console.log("Trying to log with :");
        console.log(req.body.Username);
        console.log(req.body.Password);


        var oAuthCtrl = require('./oAuth.js');
        var result = oAuthCtrl.tryLogin(req.body.Username,req.body.Password);
        res.send(result);

    });
}

And the console result is :

TypeError: Object function (width) {
  return {
    tryLogin :function(Username,Password){

   }
  };
} has no method 'tryLogin'

What I want is an oAuth object inside my oAuthCtrl variable. This way I'll be able to call my tryLogin method.

The end point here is to build an oAuth module using passeport.js with some block and page views and methods like register, tryLogin, logout etc...

Any help would be greatly appreciated.

Answer 1

You don't need to wrap tryLogin in an anonymous function when you export it.

Simply put, module.exports is an object. You could almost think of it as a sort of "return value" from calling require on a script.

You just want

// oauth.js
function tryLogin {
  // ...
}

module.exports.tryLogin = tryLogin;

---

Here's an alternative based on your comment

// oauth.js
function MyClass() {

}

MyClass.tryLogin = function tryLogin() {
  // ...
};

module.exports = MyClass;

In the last line, we're effectively replacing the default empty object provided by module.exports with our "class".