eror handling

express/middleware/app.js

@@ -4,9 +4,20 @@ const app = express();
 const user = require('./routes/user');
 const profile = require('./routes/profile');
 
+app.set('view engine', 'pug');
+
 app.use('/user', user);
 app.use('/profile', profile);
 
+app.use((err, req, res, next) => {
+    res.status(err.status);
+    res.render('error', {
+        message: err.message,
+        status: err.status
+    });
+});
+
 app.listen(3000, () => {
     console.log("express server çalıştı.");
-});
+});
+

express/middleware/helper/isLogin.js

@@ -1,5 +1,5 @@
 const isLogin = (req, res, next) => {
-    const isLogin = false;
+    const isLogin = true;
 
     if (isLogin)
         next();

express/middleware/routes/user.js

@@ -1,8 +1,13 @@
 const express = require('express');
 const router = express.Router();
 
-router.get('/', (req, res) => {
-    res.send("user sayfası");
+router.get('/', (req, res, next) => {
+    const user = false;
+
+    if (user)
+        res.send("user sayfası");
+    else
+        return next({ status: 404, message: "Bu kullanıcı bulunamadı" });
 });
 
 module.exports = router;

express/middleware/views/error.pug

@@ -0,0 +1,3 @@
+h1=status
+p
+    h3=message