El Modelo - Doctrine

Realizada por:Christian Aquino |@cj_aquinoDiego Ramirez |@thedarsideofit

Para: Hydras C&S |@hydras_csBasada en Libro Symfony 2 en español Nacho Pacheco y The Book

Conectándonos a la BD

# app/config/parameters.ymlparameters: database_driver: pdo_mysql database_host: localhost database_name: proyecto_de_prueba database_user: nombre_de_usuario database_password: password# app/config/config.ymldoctrine: dbal: driver: "%database_driver%" host: "%database_host%" dbname: "%database_name%" user: "%database_user%" password: "%database_password%"

php app/console doctrine:database:create

Creando nuestra primer Entidad

// src/Acme/StoreBundle/Entity/Product.phpnamespace Acme\StoreBundle\Entity;

class Product{ protected $name;

protected $price;

protected $description;}php app/console doctrine:generate:entity --entity="AcmeStoreBundle:Product" --fields="name:string(255) price:float description:text"

Podemos interactuar con la consola de symfony o pasar todo en una línea

Agregando datos de mapeo a nuestra entidad - Annotations// src/Acme/StoreBundle/Entity/Product.phpnamespace Acme\StoreBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

/** * @ORM\Entity * @ORM\Table(name="product") */class Product{ /** * @ORM\Id * @ORM\Column(type="integer") * @ORM\GeneratedValue(strategy="AUTO") */ protected $id;

/** * @ORM\Column(type="string", length=100) */ protected $name;

/** * @ORM\Column(type="decimal", scale=2) */ protected $price;

/** * @ORM\Column(type="text") */ protected $description;}

Agregando datos de mapeo a nuestra entidad - YAML # src/Acme/StoreBundle/Resources/config/doctrine/Product.orm.ymlAcme\StoreBundle\Entity\Product: type: entity table: product id: id: type: integer generator: { strategy: AUTO } fields: name: type: string length: 100 price: type: decimal scale: 2 description: type: text

Agregando datos de mapeo a nuestra entidad - XML<!-- src/Acme/StoreBundle/Resources/config/doctrine/Product.orm.xml --><doctrine-mapping xmlns="http://doctrine-project.org/schemas/orm/doctrine-mapping" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://doctrine-project.org/schemas/orm/doctrine-mapping http://doctrine-project.org/schemas/orm/doctrine-mapping.xsd">

<entity name="Acme\StoreBundle\Entity\Product" table="product"> <id name="id" type="integer" column="id"> <generator strategy="AUTO" /> </id> <field name="name" column="name" type="string" length="100" /> <field name="price" column="price" type="decimal" scale="2" /> <field name="description" column="description" type="text" /> </entity></doctrine-mapping>

Generando getters y setters

Podemos crear para todo el bundle o para varios bundles

php app/console doctrine:generate:entities Acme/StoreBundle/Entity/Product

php app/console doctrine:generate:entities AcmeStoreBundle php app/console doctrine:generate:entities Acme

Aplicando cambios a nuestro esquema

Si queremos ver el sql que genera el comando$ php app/console doctrine:schema:update --force --dump-sql

$ php app/console doctrine:schema:update --force

Persistiendo Nuestras Entidades// src/Acme/StoreBundle/Controller/DefaultController.php

// ...use Acme\StoreBundle\Entity\Product;use Symfony\Component\HttpFoundation\Response;

public function createAction(){ $product = new Product(); $product->setName('A Foo Bar'); $product->setPrice('19.99'); $product->setDescription('Lorem ipsum dolor');

$em = $this->getDoctrine()->getManager(); $em->persist($product); $em->flush();

return new Response('Created product id '.$product->getId());}

Recuperando informaciónpublic function showAction($id){ $product = $this->getDoctrine()->getEntityManager() ->getRepository('AcmeStoreBundle:Product') ->find($id);

if (!$product) { throw $this->createNotFoundException( 'No product found for id '.$id ); }

// ... haz algo, como pasar el objeto $product a una plantilla}

Recuperando información// consulta por la clave principal (generalmente 'id')$product = $repository->find($id);// nombres dinámicos de métodos para buscar un valor basad en columna$product = $repository->findOneById($id);$product = $repository->findOneByName('foo');// recupera TODOS los productos$products = $repository->findAll();// busca un grupo de productos basándose en el valor de una columna arbitraria$products = $repository->findByPrice(19.99);// consulta por un producto que coincide en nombre y precio$product = $repository->findOneBy(array('name' => 'foo', 'price' => 19.99));// pregunta por todos los productos en que coincide el nombre, ordenados por precio$product = $repository->findBy( array('name' => 'foo'), array('price', 'ASC'));

Eliminando un objeto

Consultando con DQL

$em->remove($product);$em->flush();

$em = $this->getDoctrine()->getEntityManager();$query = $em->createQuery( 'SELECT p FROM AcmeStoreBundle:Product p WHERE p.price > :price ORDER BY p.price ASC')->setParameter('price', '19.99');

$products = $query->getResult();

Usando el Query Builder$repository = $this->getDoctrine() ->getRepository('AcmeStoreBundle:Product');

$query = $repository->createQueryBuilder('p') ->where('p.price > :price') ->setParameter('price', '19.99') ->orderBy('p.price', 'ASC') ->getQuery();

$products = $query->getResult();

Agregando un Repositorio - Annotations// src/Acme/StoreBundle/Entity/Product.phpnamespace Acme\StoreBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

/** * @ORM\Entity(repositoryClass="Acme\StoreBundle\Entity\ProductRepository") */class Product{ //...}

Agregando un RepositorioYAML

XML

# src/Acme/StoreBundle/Resources/config/doctrine/Product.orm.ymlAcme\StoreBundle\Entity\Product: type: entity repositoryClass: Acme\StoreBundle\Entity\ProductRepository # ...

<!-- src/Acme/StoreBundle/Resources/config/doctrine/Product.orm.xml -->

<!-- ... --><doctrine-mapping>

<entity name="Acme\StoreBundle\Entity\Product" repository-class="Acme\StoreBundle\Entity\ProductRepository"> <!-- ... --> </entity></doctrine-mapping>

Métodos Propios en el Repositorio// src/Acme/StoreBundle/Entity/ProductRepository.phpnamespace Acme\StoreBundle\Entity;

use Doctrine\ORM\EntityRepository;

class ProductRepository extends EntityRepository{ public function findAllOrderedByName() { return $this->getEntityManager() ->createQuery('SELECT p FROM AcmeStoreBundle:Product p ORDER BY p.name ASC') ->getResult(); }}

Relaciones de Entidades OneToMany// src/Acme/StoreBundle/Entity/Category.php// ...use Doctrine\Common\Collections\ArrayCollection;

class Category{ // ...

/** * @ORM\OneToMany(targetEntity="Product", mappedBy="category") */ protected $products;

public function __construct() { $this->products = new ArrayCollection(); }}

Relaciones de Entidades ManyToOne// src/Acme/StoreBundle/Entity/Product.php

// ...class Product{ // ...

/** * @ORM\ManyToOne(targetEntity="Category", inversedBy="products") * @ORM\JoinColumn(name="category_id", referencedColumnName="id") */ protected $category;}

Esquema general de la relación

Guardando objetos relacionadosuse Acme\StoreBundle\Entity\Category;use Acme\StoreBundle\Entity\Product;use Symfony\Component\HttpFoundation\Response;

class DefaultController extends Controller{ public function createProductAction() { $category = new Category(); $category->setName('Main Products'); $product = new Product(); $product->setName('Foo'); $product->setPrice(19.99); // relaciona este producto a la categoría $product->setCategory($category); $em = $this->getDoctrine()->getManager(); $em->persist($category); $em->persist($product); $em->flush(); ...

Recuperando Objetos relacionados

public function showAction($id){ $product = $this->getDoctrine() ->getRepository('AcmeStoreBundle:Product') ->find($id); $categoryName = $product->getCategory()->getName();

// ...}public function showProductAction($id){ $category = $this->getDoctrine() ->getRepository('AcmeStoreBundle:Category') ->find($id);

$products = $category->getProducts();

// ...}

Evitando el lazy loading -JOINS

// src/Acme/StoreBundle/Entity/ProductRepository.phppublic function findOneByIdJoinedToCategory($id){ $query = $this->getEntityManager() ->createQuery(' SELECT p, c FROM AcmeStoreBundle:Product p JOIN p.category c WHERE p.id = :id' )->setParameter('id', $id);

try { return $query->getSingleResult(); } catch (\Doctrine\ORM\NoResultException $e) { return null; }}