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--- wiki2:nodejs:express [2017/05/10 17:31]
alfred creado
+++ wiki2:nodejs:express [2020/05/09 09:25] (actual)
@@ Línea 23: / Línea 23: @@
 app.get('/', fucntion(req, res) {
   res.send('Hello world');
+});
+</code>
+<code>
+app.post('/users/add', function(req, res){
+  console.log(req.body.firstName);
+  res.redirect('/');
+});
+</code>
+<code>
+app.delete('/users/:id', function(req, res) {
+  console.log(req.params.id);
 });
 </code>
+=== Things to do with the response ===
+Return a variable in its json format: ''res.json(person);''
 ==== Special functions ====
+''use'' is important to put it before any request.
 <code>
 var logger = function (req, res, next){
@@ Línea 34: / Línea 49: @@
 app.use(logger);
 </code>
+Set the view engine
+<code>
+app.set('view engine', 'ejs');
+// with this we can render views:
+res.render('index');
+</code>
+Set the views folder:
+<code>
+app.set('views', path.join(__dirname, 'views');
+</code>
+Set global variables
+<code>
+app.use(function(req, res, next) {
+  res.locals.errors = null;
+  next();
+});
+</code>
+=== Static path ===
+Add a "public" path:
+<code>
+var path = require('path');
+app.use(express.static(path.join(__dirname, 'public'));
+</code>
+===== Notes =====
+==== Modular applications ====
+I generally use 1 file per route and put all my routing files in a routes folder and leverage the Router available in express.
+A route file could look like this:
+<code>
+var express = require('express');
+var router = express.Router();
+router.get('/', function (req, res) {
+    res.send('Hello World!');
+});
+module.exports = router;
+</code>
+Then in the app file, simply add:
+<code>
+var example = require('./routes/example');
+app.use('/', example);
+</code>
+The routes in the routing file are relative to the route you declare in app.use.

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