index.php

<?php
# ############################################################################ #
#                                                                              #
#  # LIMONADE BLOG EXAMPLE #                                                   #
#                                                                              #
#  ---                                                                         #
#                                                                              #
#  by [Fabrice Luraine](http://github.com/sofadesign/) and                     #
#  [Mathias Standaert](http://github.com/organicweb/)                          #
#                                                                              #
#  This basic blog application will show you how to use                        #
#  the [Limonade PHP](http://www.sofa-design.net/limonade) micro-framework     #
#                                                                              #
#  This code is for learning purpose and is not intended to be used "as is"    #
#  in a production environement.                                               #
#                                                                              #
#  ---                                                                         #
#                                                                              #
#  Copyright (c) 2009 Fabrice Luraine, Mathias Standaert                       #
#                                                                              #
#  Permission is hereby granted, free of charge, to any person                 #
#  obtaining a copy of this software and associated documentation              #
#  files (the "Software"), to deal in the Software without                     #
#  restriction, including without limitation the rights to use,                #
#  copy, modify, merge, publish, distribute, sublicense, and/or sell           #
#  copies of the Software, and to permit persons to whom the                   #
#  Software is furnished to do so, subject to the following                    #
#  conditions:                                                                 #
#                                                                              #
#  The above copyright notice and this permission notice shall be              #
#  included in all copies or substantial portions of the Software.             #
#                                                                              #
#  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,             #
#  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES             #
#  OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND                    #
#  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT                 #
#  HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,                #
#  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING                #
#  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR               #
#  OTHER DEALINGS IN THE SOFTWARE.                                             #
#                                                                              #
# ############################################################################ #

# 0. Loading limonade framework
require_once('lib/limonade.php');

# 1. Setting global options of our application
function configure()
{
  # A. Setting environment
  $localhost = preg_match('/^localhost(\:\d+)?/', $_SERVER['HTTP_HOST']);
  $env =  $localhost ? ENV_DEVELOPMENT : ENV_PRODUCTION;
  option('env', $env);
  
  # B. Initiate db connexion
	$dsn = $env == ENV_PRODUCTION ? 'sqlite:db/prod.db' : 'sqlite:db/dev.db';
	try
	{
	  $db = new PDO($dsn);
	}
	catch(PDOException $e)
	{
	  halt("Connexion failed: ".$e); # raises an error / renders the error page and exit.
	}
	$db->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_WARNING );
	option('db_conn', $db);
	
	# C. Other options
	setlocale(LC_TIME, "fr_FR");
}


# 2. Setting code that will be executed bfore each controller function
function before()
{
  layout('layouts/default.html.php');
}

# 3. Defining routes and controllers
# ----------------------------------------------------------------------------
# RESTFul map:
#
#  HTTP Method |  Url path         |  Controller function
# -------------+-------------------+-------------------------------------------
#   GET        |  /posts           |  blog_posts_index
#   GET        |  /posts/:id       |  blog_posts_show 
#   GET        |  /posts/new       |  blog_posts_new 
#   POST       |  /posts           |  blog_posts_create
#   GET        |  /posts/:id/edit  |  blog_posts_edit 
#   PUT        |  /posts/:id       |  blog_posts_update
#   DELETE     |  /posts/:id       |  blog_posts_destroy
#   GET        |  /                |  blog_posts_home (redirect to /posts)
# -------------+-------------------+-------------------------------------------
#

# matches GET /
dispatch('/', 'blog_posts_home');
  function blog_posts_home()
  {
    redirect_to('posts'); # redirects to the index
  }

# matches GET /posts  
dispatch('/posts', 'blog_posts_index');
  function blog_posts_index()
  {
    $posts = post_find_all();
    set('posts', $posts); # passing posts to the view
    return html('posts/index.html.php'); # rendering HTML view
  }

# matches GET /posts/new
# must be written before the /posts/:id route
dispatch('/posts/new', 'blog_posts_new');
  function blog_posts_new()
  { 
    # passing an empty post to the view
    set('post', array('id'=>'', 'title'=>'Your title here...', 'body'=>'Your content...'));
    return html('posts/new.html.php'); # rendering view
  }

# matches GET /posts/1  
dispatch('/posts/:id', 'blog_posts_show');
  function blog_posts_show()
  { 
    if( $post = post_find(params('id')) )
    {
      set('post', $post); # passing the post the the view
      return html('posts/show.html.php'); # rendering the view
    }
    else
    {
      halt(NOT_FOUND, "This post doesn't exists"); # raises error / renders an error page
    }
    
  }
  
# matches POST /posts
dispatch_post('/posts', 'blog_posts_create');
  function blog_posts_create()
  { 
    if($post_id = post_create($_POST['post']))
    {
      redirect_to('posts', $post_id); # redirects to the show page of this newly created post
    }
    else
    {
      halt(SERVER_ERROR, "AN error occured while trying to create a new post"); # raises error / renders an error page
    }
  }
  
# matches GET /posts/1/edit  
dispatch('/posts/:id/edit', 'blog_posts_edit');
  function blog_posts_edit()
  {
    if($post = post_find(params('id')))
    {
      set('post', $post); # passing the post the the view
      return html('posts/edit.html.php'); # rendering the edit view, with its form
    }
    else
    {
      halt(NOT_FOUND, "This post doesn't exists. Can't edit it."); # raises error / renders an error page
    }
  }
  
# matches PUT /posts/1
dispatch_put('/posts/:id', 'blog_posts_update');
  function blog_posts_update()
  {
    $post_id = params('id');
    if(post_update($post_id, $_POST['post']))
    {
      redirect_to('posts', $post_id); # redirects to this freshly just updated post
    }
    else
    {
      halt(SERVER_ERROR, "An error occured while trying to update post ".$post_id); # raises error / renders an error page
    }
  }
  
# matches DELETE /posts/1
dispatch_delete('/posts/:id', 'blog_posts_destroy');
  function blog_posts_destroy()
  {
    $post_id = params('id');
    if($post = post_destroy($post_id))
    {
      redirect_to('posts'); # redirects to the index
    }
    else
    {
      halt(SERVER_ERROR, "An error occured while trying to destroy post ".$post_id); # raises error / renders an error page
    }
  }

# 4. Running the limonade blog app
run();