reading.js

var router = express.Router();

router.get('/getUsers', function(req, res, next) {
  var searchQuery = {};

  if(req.query.name)
    searchQuery = { name: req.query.name };

  User.find(searchQuery, function(err, users){
    if (err) {
      res.status(400);      
      res.send();
    }

    console.log("returning all the users.");
    res.send(users);
  })
});