我为使用 Node.js、express 和 mongoose 的 POST、GET 等方法创建了一个用于不同网页的 API。我还有一个很大的 app.js 文件，其中包含我的 CRUD 方法的路由逻辑和函数。
因此，在 app.js 文件中，我必须为模型文件夹中的每个模型执行 CRUD 功能和路由逻辑。这对于文件来说非常重要，如何将模型的 CRUD 逻辑和路由逻辑分开？这样它仍然可以正常工作而无需冲洗我的文件？
我正在考虑将 CRUD 分离到“控制器”文件夹中，并将路由分离到“路由”文件夹中，但我不知道具体如何，以及在什么地方需要什么..
我的 app.js 看起来像：
var express = require('express');
var app = express();
var bodyParser = require("body-parser");
var morgan = require("morgan");
var routes = require('./routes');
var cors = require('cors')
//configure app
app.use(morgan('dev')); //log requests to the console
//configure body parser
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());
var port = process.env.PORT || 5000;
//DATABASE SETUP
var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/DNZ'); //connect to uor datbaase
//Handle the connection event, get reference to database.
var db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error:'));
db.once('open', function() {
console.log("DB connection alive");
});
//DNZ models live here
var FA = require('./models/DNZmodels/FA');
var FP = require('./models/DNZmodels/FP');
//ROUTES FOR OUR API
//=============================================================================
//create our router
var router = express.Router();
//middleware to use for all requests
router.use(function(req, res, next) {
// do logging
console.log('Something is happening.');
console.log('Today is:', Date())
next();
});
//test route to make sure everything is working (accessed at GET http://localhost:5000/DNZ/)
router.get('/', function(req, res) {
res.json({ message: 'Welcome to DNZ API!' });
});
//on routes that end in /FA
//----------------------------------------------------
router.route('/FA')
// create a FA (accessed at POST http://localhost:8080/DNZ/FA)
.post(function(req, res) {
//console.log(req.body);
//console.log(req.body.params);
//res.setHeader('Content-Type', 'application/json')
//res.send(JSON.stringify(req.body));
/*
var timestamp = req.body.Timestamp;
var prognostizierterBetriebswert = req.body.PrognostizierterBetriebswert;
var posFlexPot = req.body.posFlexPot;
var negFlexPot = req.body.negFlexPot;
var leistungsuntergrenze = req.body.Leistungsuntergrenze;
var leistungsobergrenze = req.body.Leistungsobergrenze;
var posGesEnergie = req.body.posGesEnergie;
var negGesEnergie = req.body.negGesEnergie;
var preissignal = req.body.Preissignal;
var dummy1 = req.body.Dummy1;
var dummy2 = req.body.Dummy2;
var dummy3 = req.body.Dummy3;
var fa = new FA({
Timestamp: timestamp,
Leistungsuntergrenze: leistungsuntergrenze,
Leistungsobergrenze:leistungsobergrenze,
PrognostizierterBetriebswert :prognostizierterBetriebswert,
posFlexPot: posFlexPot,
negFlexPot:negFlexPot,
posGesEnergie: posGesEnergie,
negGesEnergie: negGesEnergie,
Preissignal:preissignal,
Dummy1: dummy1,
Dummy2: dummy2,
Dummy3: dummy3
})
*/
//fa.name = req.body.name;
console.log("Erzeugen der Instanz FA..");
//console.log(Dummy1);
//res.send(JSON.stringify(timestamp));
// create a new instance of the FA model
var fa = new FA(req.body);
//SAVE the new instance
fa.save(function(err) {
if (err) {
console.log(err);
res.status(400);
res.send(err);
}
else {
console.log("Instanz FA in Datenbank erzeugt!");
res.status(200);
res.json({ message: 'FA-Instance created in datbase!' });
}
});
})
// get all the FAs (accessed at GET http://localhost:8080/DNZ/FA)
.get(function(req, res) {
FA.find(function(err, fas) {
if (err)
res.send(err);
res.json(fas);
});
});
//on routes that end in /FA/:FA_id
//----------------------------------------------------
router.route('/FA/:FA_id')
// get the bear with that id
.get(function(req, res) {
FA.findById(req.params.bear_id, function(err, fa) {
if (err)
res.send(err);
res.json(fa);
});
})
/*
* Athlete.
find().
where('sport').equals('Tennis').
where('age').gt(17).lt(50). //Additional where query
limit(5).
sort({ age: -1 }).
select('name age').
exec(callback);
*/
// update the bear with this id
.put(function(req, res) {
FA.findById(req.params.FA_id, function(err, fa) {
if (err)
res.send(fa);
//bear.name = req.body.name;
/*
FA.save(function(err) {
if (err)
res.send(err);
res.json({ message: 'FA updated!' });
});
*/
});
});
/*
// delete the bear with this id
.delete(function(req, res) {
FA.remove({
_id: req.params.bear_id
}, function(err, FA) {
if (err)
res.send(err);
res.json({ message: 'Successfully deleted' });
});
});
*/
//*************************************************************************
//CREATE FP ROUTE
//*************************************************************************
router.route('/FP')
// create a FA (accessed at POST http://localhost:8080/DNZ/FP)
.post(function(req, res) {
//res.setHeader('Content-Type', 'application/json')
console.log("Erzeugen der Instanz FP..");
// create a new instance of the FP model
var fp = new FP(req.body);
//SAVE the new instance
fp.save(function(err) {
if (err) {
console.log(err);
res.status(400);
res.send(err);
}
else {
console.log("Instanz FP in Datenbank erzeugt!");
res.status(200);
res.json({ message: 'FP-Instance created in datbase!' });
}
});
})
// get all the FAs (accessed at GET http://localhost:8080/DNZ/FA)
.get(function(req, res) {
FP.find(function(err, fps) {
if (err) {
console.log(err);
res.status(400);
res.send(err);
}
else {
//res.send("Willkommen auf /FP");
res.json(fps);
}
});
});
//REGISTER OUR ROUTES -------------------------------and listen to requests
app.use('/DNZ', router);
//START THE SERVER
//=============================================================================
// set static directories
app.use(express.static('./dist'));
app.use(cors());
// Define Routes
var index = require('./routes/index');
var users = require('./routes/users');
//Set up routes
routes.init(app)
//run
app.listen(port);
console.log('Listen on port: ' + port);
console.log('Server started, Listening on port ', port);