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Question

I have downloaded doctrine 2.2 orm. I have gone through its installation guide but i cant properly understand its documentation. Can someone guide me through the setup process of doctrine. I have previously been working with Hibernate ORM framework in java. They have excellent documentation which are easy to understand for beginners. I dont find the documentation of doctrine to be of that level. Can somebody provide some sample projects on doctrine to begin with?

Answer 1

There are several ways on how to install doctrine to your website project. I will show you an easy alternative:

• Download doctrine package and uncompressed inin your server. Now your directory looks like this:

  localhost/Doctrine
  localhost/Doctrine/Common
  localhost/Doctrine/ORM
  localhost/Doctrine/DBAL

• You need to create two additionals folder in order to store your models (persistence entities), and proxies:

  localhost/models
  localhost/proxies

• Create a class that will in charge of create the EntityManager object and the connection to database. Lets create the magic class named Doctrine:

  localhost/doctrine.php

Setting the properties:

<?php
use Doctrine\Common\ClassLoader,
    Doctrine\ORM\Configuration,
    Doctrine\ORM\EntityManager,
    Doctrine\Common\Cache\ArrayCache,
    Doctrine\DBAL\Logging\EchoSQLLogger;

class Doctrine{

  public $em = null;

  public function __construct()
  {

    require_once 'Doctrine/Common/ClassLoader.php';

    $doctrineClassLoader = new ClassLoader('Doctrine',  '/');
    $doctrineClassLoader->register();
    $entitiesClassLoader = new ClassLoader('models', '/models/');
    $entitiesClassLoader->register();
    $proxiesClassLoader = new ClassLoader('Proxies', '/proxies/');
    $proxiesClassLoader->register();

    // Set up caches
    $config = new Configuration;
    $cache = new ArrayCache;
    $config->setMetadataCacheImpl($cache);
    $driverImpl = $config->newDefaultAnnotationDriver(array('/models/Entities'));
    $config->setMetadataDriverImpl($driverImpl);
    $config->setQueryCacheImpl($cache);

    $config->setQueryCacheImpl($cache);

    // Proxy configuration
    $config->setProxyDir('/proxies');
    $config->setProxyNamespace('Proxies');

    // Set up logger
    $logger = new EchoSQLLogger;
    //$config->setSQLLogger($logger);

    $config->setAutoGenerateProxyClasses( TRUE );

    // Database connection information
    $connectionOptions = array(
        'driver' => 'pdo_mysql',
        'user' =>     'USER',
        'password' => 'PASS',
        'host' =>     'HOST',
        'dbname' =>   'DB_NAME'
    );

    // Create EntityManager
    $this->em = EntityManager::create($connectionOptions, $config);
  }
}

Now your able to use the entityManager in you website once you have included it.

$doctrine = new Doctrine();
$user = new models\User;
$doctrine->em->persist($user);
$doctrine->em->flush();

Al least this post can help you to take the idea on how to install and use doctrine