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Doctrine2 ActiveRecord with Twig

This is an experiment for building ActiveRecord functionality on top of Doctrine2 using the Twig templating engine. Whether it is called Propel2 or not is irrelevant.

Installation

Clone the Propel2 repository:

$ git clone --recursive https://github.com/fzaninotto/Propel2.git

Or if you use an old version of Git (pre 1.6.5):

$ git clone https://github.com/fzaninotto/Propel2.git
$ cd Propel2
$ git submodule update --init --recursive

You're good to go.

Demo

From the root of the project, type:

$ php tests/demo/demo.php

This outputs the generated code for a Base ActiveRecord class, based on a Doctrine\ORM\Mapping\ClassMetadataInfo instance.

Features

Usage

No command line utility for now. You need to build classes by hand using the builders.

Example build:

<?php

// register autoloaders, etc.

use Propel\Builder\ORM\BaseActiveRecord;
use Doctrine\ORM\Mapping\ClassMetadataInfo;

$metadata = new ClassMetadataInfo('Bookstore\\Book');
$metadata->mapField(array('fieldName' => 'id', 'type' => 'integer', 'id' => true));
$metadata->mapField(array('fieldName' => 'name', 'type' => 'string'));
$metadata->mapField(array('fieldName' => 'status', 'type' => 'string', 'default' => 'published'));
// more metadata description...

$builder = new BaseActiveRecord($metadata);
echo $builder->getCode();

This generates the following code:

<?php

namespace Bookstore\Base;

use Doctrine\ORM\Mapping\ClassMetadata;
use Propel\ActiveEntity;

/**
 * Base class providing ActiveRecord features to Book.
 * Do not modify this class: it will be overwritten each time you regenerate
 * ActiveRecord.
 */
class Book extends ActiveEntity
{
    /**
     * @var integer
     */
    protected $id;

    /**
     * @var string
     */
    protected $name;

    /**
     * @var string
     */
    protected $status = 'published';

    /**
     * @var \Doctrine\Tests\ORM\Tools\EntityGeneratorAuthor
     */
    protected $author;

    /**
     * @var \Doctrine\Common\Collections\ArrayCollection
     */
    protected $comments;

    /**
     * Class constructor.
     * Initializes -to-many associations
     */
    public function __construct()
    {
        $this->comments = new \Doctrine\Common\Collections\ArrayCollection();
    }

    /**
     * Get the id
     * 
     * @return integer
     */
    public function getId()
    {
        return $this->id;
    }

    /**
     * Set the id
     * 
     * @param integer $id
     */
    public function setId($id)
    {
        $this->id = $id;
    }

    /**
     * Get the name
     * 
     * @return string
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * Set the name
     * 
     * @param string $name
     */
    public function setName($name)
    {
        $this->name = $name;
    }

    /**
     * Get the status
     * 
     * @return string
     */
    public function getStatus()
    {
        return $this->status;
    }

    /**
     * Set the status
     * 
     * @param string $status
     */
    public function setStatus($status)
    {
        $this->status = $status;
    }

    /**
     * Get the related author
     * 
     * @return \Doctrine\Tests\ORM\Tools\EntityGeneratorAuthor
     */
    public function getAuthor()
    {
        return $this->author;
    }

    /**
     * Set the related author
     * 
     * @param \Doctrine\Tests\ORM\Tools\EntityGeneratorAuthor $author
     */
    public function setAuthor($author)
    {
        $this->author = $author;
    }

    /**
     * Get the collection of related comments
     * 
     * @return \Doctrine\Common\Collections\ArrayCollection
     */
    public function getComments()
    {
        return $this->comments;
    }

    /**
     * Set the collection of related comments
     * 
     * @param \Doctrine\Common\Collections\ArrayCollection $comments
     */
    public function setComments($comments)
    {
        $this->comments = $comments;
    }

    /**
     * Add a comment to the collection of related comments
     * 
     * @param Doctrine\Tests\ORM\Tools\EntityGeneratorComment $comment
     */
    public function addComment($comment)
    {
        $this->comments->add($comment);
    }

    /**
     * Remove a comment from the collection of related comments
     * 
     * @param Doctrine\Tests\ORM\Tools\EntityGeneratorComment $comment
     */
    public function removeComment($comment)
    {
        $this->comments->removeElement($comment);
    }

    /**
     * Set a property of the entity by name passed in as a string
     * 
     * @param string $name  The property name
     * @param mixed  $value The value
     * 
     * @throws \InvalidArgumentException If the property does not exists
     */
    public function setByName($name, $value)
    {
        if ($name === 'id') {
            return $this->setId($value);
        }
        if ($name === 'name') {
            return $this->setName($value);
        }
        if ($name === 'status') {
            return $this->setStatus($value);
        }

        throw new \InvalidArgumentException(sprintf('The property "%s" does not exists.', $name));
    }

    /**
     * Retrieve a property from the entity by name passed in as a string
     * 
     * @param string $name  The property name
     * 
     * @return mixed The value
     * 
     * @throws \InvalidArgumentException If the property does not exists
     */
    public function getByName($name)
    {
        if ($name === 'id') {
            return $this->getId();
        }
        if ($name === 'name') {
            return $this->getName();
        }
        if ($name === 'status') {
            return $this->getStatus();
        }

        throw new \InvalidArgumentException(sprintf('The property "%s" does not exists.', $name));
    }

    /**
     * Load the metadata for a Doctrine\ORM\Mapping\Driver\StaticPHPDriver
     *
     * @param ClassMetadata $metadata The metadata class
     */
    static public function loadMetadata(ClassMetadata $metadata)
    {
        $metadata->setIdGeneratorType(ClassMetadata::GENERATOR_TYPE_AUTO);
        $metadata->setChangeTrackingPolicy(ClassMetadata::CHANGETRACKING_DEFERRED_EXPLICIT);
        $metadata->setCustomRepositoryClass('Bookstore\BookRepository');
        $metadata->setPrimaryTable(array('name' => 'book'));

        $metadata->mapField(array(
            'fieldName'  => 'id',
            'type'       => 'integer',
            'id'         => true,
            'columnName' => 'id',
        ));
        $metadata->mapField(array(
            'fieldName'  => 'name',
            'type'       => 'string',
            'columnName' => 'name',
        ));
        $metadata->mapField(array(
            'fieldName'  => 'status',
            'type'       => 'string',
            'default'    => 'published',
            'columnName' => 'status',
        ));

        $metadata->mapOneToOne(array(
            'fieldName'         => 'author',
            'targetEntity'      => 'Doctrine\Tests\ORM\Tools\EntityGeneratorAuthor',
            'mappedBy'          => 'book',
            'cascade'           => array(),
            'fetch'             => ClassMetadata::FETCH_LAZY,
            'joinColumns'       => array(array(
                'name'                 => 'author_id',
                'referencedColumnName' => 'id',
                'unique'               => true,
            )),
        ));
        $metadata->mapManyToMany(array(
            'fieldName'         => 'comments',
            'targetEntity'      => 'Doctrine\Tests\ORM\Tools\EntityGeneratorComment',
            'cascade'           => array(),
            'fetch'             => ClassMetadata::FETCH_LAZY,
            'joinTable'         => array(
                'name'               => 'book_comment',
                'joinColumns'        => array(array(
                    'name'                 => 'book_id',
                    'referencedColumnName' => 'id',
                )),
                'inverseJoinColumns' => array(array(
                    'name'                 => 'comment_id',
                    'referencedColumnName' => 'id',
                )),
            ),
        ));

        $metadata->setLifecycleCallbacks(array(
            'postLoad'  => array('loading'),
            'preRemove' => array('willBeRemoved'),
        ));
    }

    /**
     * Populates the entity from an associative array
     * 
     * This is particularly useful when populating an object from one of the
     * request arrays (e.g. $_POST). This method goes through the column
     * names, checking to see whether a matching key exists in populated
     * array. If so the set[ColumnName]() method is called for that column.
     * 
     * @param array $array
     */
    public function fromArray($array)
    {
        if (isset($array['id']) || array_key_exists('id', $array)) {
            $this->setId($array['id']);
        }
        if (isset($array['name']) || array_key_exists('name', $array)) {
            $this->setName($array['name']);
        }
        if (isset($array['status']) || array_key_exists('status', $array)) {
            $this->setStatus($array['status']);
        }
    }

    /**
     * Exports the entity to an associative array
     * 
     * @return array
     */
    public function toArray()
    {
        return array(
            'id' => $this->getId(),
            'name' => $this->getName(),
            'status' => $this->getStatus(),
        );
    }

}

Extending ActiveEntity is optional, but gives the same API as Propel1 (save(), delete(), isNew(), etc.).