handlebars lekcja 1

Lekcja_06/server05.js

@@ -0,0 +1,65 @@
+const context = {
+    subject: "ćwiczenie 4 - dane z tablicy, select",
+    fields: [
+        { name: "title" },
+        { name: "author" },
+        { name: "lang" }
+    ],
+    books: [
+        { title: "Lalka", author: "B Prus", lang: "PL" },
+        { title: "Hamlet", author: "W Szekspir", lang: "ENG" },
+        { title: "Pan Wołodyjowski", author: "H Sienkiewicz", lang: "PL" },
+        { title: "Zamek", author: "F Kafka", lang: "CZ" }
+    ]
+}
+
+const express = require("express")
+const app = express()
+const PORT = 3000
+const path = require('path')
+
+const { create } = require('express-handlebars');
+
+const hbs = create({
+    defaultLayout: 'main.hbs', // Domyślny layout: views/layouts/main.hbs
+    extname: '.hbs' // rozszerzenie plików szablonów
+});
+
+app.engine('.hbs', hbs.engine); // określenie silnika szablonów
+app.set('view engine', '.hbs');
+app.set('views', path.join(__dirname, 'views')); // ustalamy katalog views
+
+app.get("/", function (req, res) {
+    res.render('index04a.hbs', context)
+})
+
+app.get("/handle04", function (req, res) {
+    let data = {
+        subject: context.subject,
+        books: []
+    };
+
+    if (!req.query.field) {
+        data.books.push({ value: "Musisz wybrać co najmniej jedno kryterium!" })
+    } else {
+        switch (req.query.field) {
+            case 'title':
+                context.books.forEach(book => { data.books.push({ value: book.title }) })
+                break
+            case 'author':
+                context.books.forEach(book => { data.books.push({ value: book.author }) })
+                break
+            case 'lang':
+                context.books.forEach(book => { data.books.push({ value: book.lang }) })
+                break
+        }
+    }
+
+    res.render('index041.hbs', data);
+})
+
+app.use(express.static("static"))
+
+app.listen(PORT, function () {
+    console.log("start serwera na porcie " + PORT)
+})