home > Basic Todo List in 0.2

Basic Todo List in 0.2

DEPRECATED! This code won’t work in the latest version of web.py.

Uses web.py microframework: web.py, template.py, form.py.

Requires PostgreSQL, lighttpd, psycopg2 and flup.

Note: This code is beta. This means: 2xplore at your own risk ;)

Files:

tidy/
  __init__.py
  app/
    __init__.py
    controller.py
  conf/
    httpd.conf
  db/
    model.sql
  static/
    favicon.ico
    icon.jpg
    style.css
  views/
    base.html
    login.html
    todos.html

Main:

init.py

#! /usr/bin/env python
'tidy: a tiny todo list web engine.'
__version__ = '0.01beta' 
__author__  = 'domimob'
__license__ = 'public domain'
#
# Modules import.
import web, app.controller
#
# App definition, via URL to class mapping.
tidy = (
    '/', 'app.controller.Index',
    '/session', 'app.controller.Session',
    '/todo/add', 'app.controller.ToDo',
    '/todo/del/(\d+)', 'app.controller.ToDo',
    '/style.css', 'app.controller.Style' ,)
#
# Database connection definition.
web.db_parameters = dict (
    dbn='postgres',
    user='domimob',
    pw='passwd', 
    db='tidydb' )
#
# App execution.
if __name__ == '__main__': web.run(tidy)

Model:

db/model.sql

-- PostgreSQL database model.
--
create table todos (id serial primary key, title text);

Controller:

app/init.py

# Application modules import.
#
import controller

app/controller.py

'todo-list web engine controller.'
__version__ = '0.01beta' 
__author__  = 'domimob' 
#
# Modules import.
import web, template, form
#
# Views directory definition.
view = template.render('views/')
# 
# Forms definition.
loginForm = form.Form(form.Password('password'))
addForm = form.Form(form.Textbox('new', form.notnull))
#
# RESTful class definition.
class Index:
    'Index page object definition.'
    def GET(self):
        'Render the index page.'
        session = web.cookies()
        if not session:
            form = loginForm()
            print view.base(view.login(form))
        else:
            list = web.select('todos')
            form = addForm()
            print view.base(view.todos(list, form), session)
#
class Session:
    'Session object definition.'
    def GET(self):
        'Manage the user logout.'
        web.setcookie('user', '', 'Mon, 01-Jan-2000 00:00:00 GMT') 
        web.redirect('/')
    def POST(self):
        'Manage the user login.'
        login = web.input()
        if login.password == web.db_parameters['pw']:
            web.setcookie('user', web.db_parameters['user'])
        web.redirect('/')
#
class ToDo:
    'ToDo object definition.'
    def GET(self, id):
        'Delete a todo item, identified by parameter id.'
        web.delete('todos', int(id))
        web.redirect('/')
    def POST(self):
        'Add a todo item.'
        form = addForm()
        if form.validates():
            todo = web.input()
            web.insert('todos', title=todo.new)
        web.redirect('/')
#
class Style:
    'Style object definition.'
    def GET(self):
        'Render the stylesheet.'
        web.header("Content-Type","text/css; charset=utf-8")
        print open('static/style.css').read()

Views:

views/base.html

$def with (view, session=None)
$# Base view definition.
$#
<html>
<head>
    <title>tidy</title>
    <link rel="stylesheet" type="text/css" href="http://domimob.infogami.com/wiki/style.css"/>
</head> 
<body> 
    <table class="base">
        <tr><td><img src="static/icon.jpg"/></td></tr>
        $if session:
            <tr><td><h3>$session.user's todo list</h3></tr></td>
        $else:
            <tr><td><h3>a tiny todo list web engine</h3></tr></td>
        <tr><td>$:view</tr></td>
    </table>
</body>
</html>

views/todos.html

$def with (list, form)
$# Todos view definition.
$# 
$for todo in list:
    <a class ="todo" href="todo/del/$todo.id" title="click to delete">$todo.title</a><br/>
<form method="post" action="todo/add">
    <br/>$:form.render()
</form>
<a href="/session">.logout</a>

views/login.html

$def with (form)
$# Login view definition.
$#
<form method="post" action="session">
    <br/>$:form.render()
</form>

Static Files:

static/style.css

body { text-align: left; font-family: arial; color: #C0C0C0 } 
table.base { width: 50%; text-align: left; margin: auto } 
a { text-decoration: none; color: gray } 
a:hover { text-decoration: overline }
a.todo { text-decoration: none; font-weight: bolder; color: black } 
a.todo:hover { text-decoration: line-through }

Web Server:

conf/httpd.conf

# LigHTTPd web server configuration.
#
# Server configuration.
server.document-root = "/Users/domimob/lab/tidy/"
server.modules = ("mod_fastcgi", "mod_rewrite")
server.port = 8080
#
# FastCGI configuration.
fastcgi.server = ( 
    "__init__.py" => ((
        "bin-path" => server.document-root + "/__init__.py",
        "socket" => "/tmp/fastcgi.socket",
        "max-procs" => 1 )))
#
# mod_rewrite configuration.
url.rewrite-once = (
    "^/favicon.ico$" => "/static/favicon.ico", 
    "^/static/(.*)$" => "/static/$1", 
    "^/(.*)$" => "__init__.py/$1" ,)