Fluent Database Toolkit based on conventions.

Tables used:

• author (id, name)
• post (id, author_id, title, text)
• comment (id, post_id, author_id, text)

PHP:

<?php
use PDO;
use Respect\Relational\Mapper;

$mapper = new Mapper(new PDO( /* my db conf */ ));

$postTwelve = $mapper->post[12]->fetch();
$commentsOnPostTwelve = $mapper->comment->post[12]->fetchAll();
$commentsOnPostsFromAuthorSeven = $mapper->comment->post->author[7]->fetchAll();

Thats it. It doesn't need configuration, entity classes or anything else. Plug and rock on.

If you're wondering how dirty are the SQL statements generated, well, they're pretty readable and smart. The last sample above generate something like this:

SELECT
    *
FROM 
    comment
INNER JOIN
    post
    ON comment.post_id = post.id
INNER JOIN
    author
    ON comment.author_id = author.id
WHERE
    author.id = 7;

Seems written by a human, doesn't? The mapper is able to treat duplicated columns, human readable joins and everything else without any configuration or extra SQL statements. It does not use SHOW TABLES or anything like it.

Edit a post:

$post = $mapper->post[12]->fetch();
$post->title = "New Post title";
$mapper->post->persist($post);
$mapper->flush();

New comment:

$comment = new stdClass;
$comment->post_id = 3;   //you can use a post object if you want
$comment->author_id = 7; //same here
$comment->text = "hi there";
$mapper->comment->persist($comment);
$mapper->flush();

Edit a bunch of comments:

$comments = $mapper->comment->author[15]->fetchAll();

foreach ($comments as $c) {
    $c->text = "This user has been banned";
    $mapper->comment->persist($c);
}

$mapper->flush();

Remove a previously fetched comment:

$comment = $mapper->comment[1651]->fetch();
$mapper->comment->remove($comment);
$mapper->flush();

Last 10 comments from author (full code):

<?php
use PDO;
use Respect\Relational\Mapper;
use Respect\Relational\Sql;

$mapper = new Mapper(new PDO( /* my db conf */ ));

$lastComments = $mapper->comment
                       ->author[15]
                       ->fetchAll(Sql::orderBy('id desc')->limit(10));

Please install via PEAR. Instructions on our Pear Channel.

If installing without PEAR, make sure the latest Respect\Data is also installed.

Copyright (c) 2009-2011, Alexandre Gomes Gaigalas. All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

• Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

• Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

• Neither the name of Alexandre Gomes Gaigalas nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

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