javascript - How to expose your models to the app and to routes -

i using waterline orm express. wondering best way expose models can use them in app. far have call req.app.models.model_name seems bit complicated. code example works i'm not sure if practice since i'm quite new node.js / waterline , express.

my folder structure 1 made express generator modifications:

├── app.js ├── bin │   └── www ├── models │   ├── index.js │   └── links.js ├── package.json ├── public │   ├── images │   ├── javascripts │   └── stylesheets │       └── style.css ├── routes │   ├── index.js │   └── users.js └── views     ├── error.jade     ├── index.jade     └── layout.jade 

this how use waterline inside models. have index.js setup waterline , automatically loads other models in folder ./models

// ./models/index.js  var orientadapter = require('sails-orientdb'); var waterline = require('waterline');  var orm = new waterline();  var config = {   // setup adapters   // creates named adapters have have been required   adapters: {     'default': orientadapter,     orient: orientadapter,   },    // build connections config   // setup connections using named adapter configs   connections: {     mylocalorient: {       adapter: 'orient',       host: 'localhost',       port: 2424,       user: 'root',       password: 'password',       database: 'database'     }   },    defaults: {     migrate: 'alter'   } };  // include files in ./models directory var fs = require('fs'); var path = require("path");  fs   .readdirsync(__dirname)   .filter(function(file) {     return (file.indexof(".") !== 0) && (file !== "index.js");   })   .foreach(function(file) {     var model = require(path.join(__dirname, file));     orm.loadcollection(model);   });  module.exports = {waterline: orm, config: config}; 

an example model (link):

// ./models/link.js  var waterline = require('waterline'); var orientadapter = require('sails-orientdb');  var link = waterline.collection.extend({   identity: 'link',   connection: 'mylocalorient',    attributes: {      title: {       type: 'string',       required: true     },      url: {       type: 'string',       required: true     }   } });  module.exports = link; 

to hook app modified ./bin/www use start app (node ./bin/www)

// ./bin/www   #!/usr/bin/env node  /**  * module dependencies.  */  var app = require('../app'); var debug = require('debug')('v2:server'); var http = require('http');  /**  * port environment , store in express.  */  var port = normalizeport(process.env.port || '3000'); app.set('port', port);  /**  * create http server.  */  var server = http.createserver(app);  /**  * listen on provided port, on network interfaces.  */ // start server startup waterline var models = require('../models');  models.waterline.initialize(models.config, function(err, models) {   if(err) throw err;   //  console.log(models.collections);   app.models = models.collections;   app.connections = models.connections;    // start server   server.listen(port);   server.on('error', onerror);   server.on('listening', onlistening); });  /**  * normalize port number, string, or false.  */  function normalizeport(val) {   var port = parseint(val, 10);    if (isnan(port)) {     // named pipe     return val;   }    if (port >= 0) {     // port number     return port;   }    return false; }  /**  * event listener http server "error" event.  */  function onerror(error) {   if (error.syscall !== 'listen') {     throw error;   }    var bind = typeof port === 'string'     ? 'pipe ' + port     : 'port ' + port;    // handle specific listen errors friendly messages   switch (error.code) {     case 'eacces':       console.error(bind + ' requires elevated privileges');       process.exit(1);       break;     case 'eaddrinuse':       console.error(bind + ' in use');       process.exit(1);       break;     default:       throw error;   } }  /**  * event listener http server "listening" event.  */  function onlistening() {   var addr = server.address();   var bind = typeof addr === 'string'     ? 'pipe ' + addr     : 'port ' + addr.port;   debug('listening on ' + bind); } 

i can use models in routes so:

// ./routes/index.js      var express = require('express'); var router = express.router(); var app = require('../app');  // index router.get('/links', function(req, res, next) {     req.app.models.link.find().limit(10).then(function(links) {          res.json(links);      }); });  // create router.post('/links', function(req, res, next) {     var link = req.app.models.link.create(req.body)     .then(function(link) {         res.json(link);          })     .catch(console.error); });  module.exports = router; 

note use of req.app.models.link.find()....

i started worried when tried hook in passport , created file ./config/passport.js. first implementation got error referenceerror: req not defined had change , pass request object passport strategy. so:

// ./routes/index.js  // ...  // login user router.post('/login', function(req, res, next){   if(!req.body.username || !req.body.password){     return res.status(400).json({message: 'please fill out fields'});   }    passport.authenticate('local', function(err, user, info){     if(err){ return next(err); }      if(user){       return res.json({token: user.generatejwt()});     } else {       return res.status(401).json(info);     }   })(req, res, next); }); 

and passport local strategy:

// ./config/passport.js  var passport = require('passport'); var localstrategy = require('passport-local').strategy;  passport.use(new localstrategy({     passreqtocallback : true   },   function(req, username, password, done) {      // check in orientdb if user username exists or not     req.app.models.user.findone({ 'username' :  username },        function(err, user) {         // in case of error, return using done method         if (err) return done(err);         // username not exist, log error & redirect         if (!user){           console.log('user not found username '+username);           return done(null, false, { message: 'user not found username '+username });                          }         // user exists wrong password, log error          if (!user.verifypassword(password)){           console.log('invalid password');           return done(null, false, { message: 'invalid password'});         }         // user , password both match, return user          // done method treated success         return done(null, user);       }     ); })); 

maybe fine wondering if there better way this.

question: way expose waterline models app? or missing something?