Symfony2 Doctrine ORM 安装配置

$ composer require doctrine/doctrine-bundle

<?php
// app/AppKernel.php

// ...
class AppKernel extends Kernel
{
    public function registerBundles()
    {
        $bundles = array(
            // ...

            new Doctrine\Bundle\DoctrineBundle\DoctrineBundle(),
        );

        // ...
    }

    // ...
}

# app/config/parameters.yml
parameters:
    database_host:      localhost
    database_name:      test_project
    database_user:      root
    database_password:  password
 
# ...

doctrine:
    dbal:
        driver:   %database_driver%
        host:     %database_host%
        port:     %database_port%
        dbname:   %database_name%
        user:     %database_user%
        password: %database_password%
        charset:  UTF8
        # if using pdo_sqlite as your database driver, add the path in parameters.yml
        # e.g. database_path: %kernel.root_dir%/data/data.db3
        # path:     %database_path%
        mapping_types:
            enum: string
            set: string
            varbinary: string
            tinyblob: text
    orm:
        auto_generate_proxy_classes: %kernel.debug%
        auto_mapping: true

// src/AppBundle/Entity/Product.php
namespace AppBundle\Entity;
 
use Doctrine\ORM\Mapping as ORM;
 
/**
 * @ORM\Entity
 * @ORM\Table(name="product")
 */
class Product
{
    /**
     * @ORM\Column(type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;
 
    /**
     * @ORM\Column(type="string", length=100)
     */
    private $name;
 
    /**
     * @ORM\Column(type="decimal", scale=2)
     */
    private $price;
 
    /**
     * @ORM\Column(type="text")
     */
    private $description;
}

// src/AppBundle/Controller/DefaultController.php
 
// ...
use AppBundle\Entity\Product;
use Symfony\Component\HttpFoundation\Response;
 
// ...
public function createAction()
{
    $product = new Product();
    $product->setName(‘Keyboard‘);
    $product->setPrice(19.99);
    $product->setDescription(‘Ergonomic and stylish!‘);
 
    $em = $this->getDoctrine()->getManager();
 
    // tells Doctrine you want to (eventually) save the Product (no queries yet)
    // 告诉Doctrine你希望（最终）存储Product对象（还没有语句执行）
    $em->persist($product);
 
    // actually executes the queries (i.e. the INSERT query)
    // 真正执行语句（如，INSERT 查询）
    $em->flush();
 
    return new Response(‘Saved new product with id ‘.$product->getId());
}