tutorials: rename vweb tutorial

tutorials/Building a simple web blog with vweb/code/blog/blog.v

@@ -0,0 +1,80 @@
+module main
+
+import vweb
+import time
+import sqlite
+import json
+
+struct App {
+	vweb.Context
+pub mut:
+	db      sqlite.DB
+	user_id string
+}
+
+fn main() {
+	mut app := App{
+		db: sqlite.connect('blog.db') or { panic(err) }
+	}
+	sql app.db {
+		create table Article
+	}
+	vweb.run(app, 8081)
+}
+
+/*
+pub fn (mut app App) index_text() vweb.Result {
+	app.vweb.text('Hello, world from vweb!')
+	return vweb.Result{}
+}
+
+pub fn (app &App) index_html() vweb.Result {
+	message := 'Hello, world from Vweb!'
+	return $vweb.html()
+}
+*/
+['/index']
+pub fn (app &App) index() vweb.Result {
+	articles := app.find_all_articles()
+	return $vweb.html()
+}
+
+pub fn (mut app App) before_request() {
+	app.user_id = app.get_cookie('id') or { '0' }
+}
+
+['/new']
+pub fn (mut app App) new() vweb.Result {
+	return $vweb.html()
+}
+
+['/new_article'; post]
+pub fn (mut app App) new_article() vweb.Result {
+	title := app.form['title']
+	text := app.form['text']
+	if title == '' || text == '' {
+		return app.text('Empty text/title')
+	}
+	article := Article{
+		title: title
+		text: text
+	}
+	println('posting article')
+	println(article)
+	sql app.db {
+		insert article into Article
+	}
+
+	return app.redirect('/')
+}
+
+['/articles'; get]
+pub fn (mut app App) articles() vweb.Result {
+	articles := app.find_all_articles()
+	json_result := json.encode(articles)
+	return app.json(json_result)
+}
+
+fn (mut app App) time() {
+	app.text(time.now().format())
+}