Fluent ORM
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 by default,
but you can use it if you want.
Edit a post:
$post = $mapper->post[12]->fetch();
$post->title = "New Post title";
$mapper->persist($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";
$mapper->persist($comment, '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";
$mapper->persist($c);
}
$mapper->flush();
Remove a previously fetched comment:
$comment = $mapper->comment[1651]->fetch();
$mapper->remove($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));
Use entity classes (full code):
<?php
use PDO;
use Respect\Relational\Mapper;
use Respect\Relational\Sql;
use Respect\Relational\Schemas\Typed;
use Respect\Relational\Schemas\Infered;
$schemaProvider = new Typed(new Infered, 'MyNamespace\\Entities');
$mapper = new Mapper(new PDO( /* my db conf */ ), $schemaProvider);
$lastComments = $mapper->comment
->author[15]
->fetchAll(Sql::orderBy('id desc')->limit(10));
Entity classes must have public attributes, like this:
<?php
namespace MyNamespace\Entities;
class Comment
{
public $id;
public $author_id;
public $post_id;
public $text;
}
- New Schema Providers:
- ReverseEngineered (from metadata tables)
- Config (from configuration)
- Reflected (extract schema info from PHP objects)
- DoctrineAnnotation (from Doctrine Annotations)
- AutoGenerated (creates and alters the tables itself, without configuration)
- New Schema Decorators:
- Cached (cache metadata for some schema providers)
- LazyLoaded (less joins, more small queries)
- Table inheritance (abstract for single table and concrete for multi table)
- Support for value objects
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:
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Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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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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