如何在CodeIgniter 3中安装Doctrine

Question

该官方指南是不完整的,和其他人是CI2.

所以我给你一个我自己检查过的教程.

我知道SO鼓励用户回答他们自己的问题.

Answer 1

安装Doctrine

(以下说明经过修改:Doctrine 2 ORM的文档 - 安装和配置)

可以使用Composer安装Doctrine :

1. 从命令行(例如Windows:Start> cmd),切换到应安装文件的文件夹(例如htdocs/my_project).

2. 使用Composer安装文件:

   一个.跑C:\>composer install doctrine/orm

   要么:

   湾 在composer.json文件中定义以下要求:

   {
   "require": {
       "doctrine/orm": "*"
     }
   }
   

   然后composer install从命令行调用.

Composer将安装一个vendor包含大量子文件夹和数百个php文件的文件夹.将此vendor文件夹移动到CodeIgniter应用程序树中.为简单起见,您可以将其放在此处:

/application
    /config
    /controllers
    /libraries
       Doctrine.php <-- the doctrine bootstrap/wrapper file
    /third_party
/vendor  <-- the folder installed by Composer. don't touch the files or folders below it -- install all together as one happy family.
    /bin
    /composer
    /doctrine
    /symfony
    autoload.php  <-- Doctrine.php opens this to load its files

然后在你的库文件中Doctrine.php(见下文)你会:

require_once FCPATH . 'vendor/autoload.php';  // FCPATH is a CI constant specifies the path to the front controller.

您还可以安装vendor其他地方包含的所有文件夹和文件,third_party并相应地调整您的Doctrine.php.

与CodeIgniter集成

(以下说明修改自:Doctrine 2 ORM的文档 - 与CodeIgniter集成)

1. 创建Doctrine库:在您的文件夹中system/application/libraries,创建一个名为的文件Doctrine.php,并将以下代码复制/粘贴到该文件中.这将成为Doctrine2实体管理器的包装器/引导程序.

   您的Doctrine.php库文件应如下所示(您可以根据需要对其进行自定义):

   <?php
   /**
   * Doctrine 2.4 bootstrap
   *
   */
   
   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()
      {
        // load database configuration from CodeIgniter
        require_once APPPATH.'config/database.php';
   
       // load Doctrine
       require_once FCPATH . 'vendor/autoload.php';
   
       // or, if you installed another way, you could:
       // require_once APPPATH.'third_party/Doctrine/Common/ClassLoader.php';
   
       // load the Doctrine classes        
       $doctrineClassLoader = new ClassLoader('Doctrine',  APPPATH.'libraries');
       // or, if installed in third_party: 
       // $doctrineClassLoader = new ClassLoader('Doctrine',  APPPATH.'third_party');
       $doctrineClassLoader->register();
       // load the entities
       $entityClassLoader = new ClassLoader('Entities', APPPATH.'models');
       $entityClassLoader->register();
       // load the proxy entities
       $proxiesClassLoader = new ClassLoader('Proxies', APPPATH.'models/proxies');
       $proxiesClassLoader->register();
       // load Symfony2 classes
       // this is necessary for YAML mapping files and for Command Line Interface (cli-doctrine.php)
       $symfonyClassLoader = new ClassLoader('Symfony',  APPPATH.'third_party/Doctrine');
       $symfonyClassLoader->register();
   
       // Set up the configuration
       $config = new Configuration;
   
       // Set up caches
       if(ENVIRONMENT == 'development'):  // set environment in index.php
           // set up simple array caching for development mode
           $cache = new \Doctrine\Common\Cache\ArrayCache;
       else:
           // set up caching with APC for production mode
           $cache = new \Doctrine\Common\Cache\ApcCache;  
       endif;
       $config->setMetadataCacheImpl($cache);
       $config->setQueryCacheImpl($cache);
   
       // set up annotation driver
       $driver = new \Doctrine\ORM\Mapping\Driver\PHPDriver(APPPATH.'models/Mappings');
       $config->setMetadataDriverImpl($driver);
   
       // Proxy configuration
       $config->setProxyDir(APPPATH.'/models/Proxies');
       $config->setProxyNamespace('Proxies');
   
       // Set up logger (recommended to remove for production)
       $logger = new EchoSQLLogger;
       $config->setSQLLogger($logger);
   
       $config->setAutoGenerateProxyClasses( TRUE ); // only for development
   
       // Database connection information
       $connectionOptions = array(
           'driver' => 'pdo_mysql',
           'user' =>     $db['default']['username'],
           'password' => $db['default']['password'],
           'host' =>     $db['default']['hostname'],
           'dbname' =>   $db['default']['database']
       );
   
       // Create EntityManager, and store it for use in our CodeIgniter controllers
       $this->em = EntityManager::create($connectionOptions, $config);
     }
   }
   

2. 加载doctrine库:通过将Doctrine库添加到application/config/autoload.php文件中的数组来自动加载它:

   '$ autoload ['libraries'] = array('doctrine');`

或使用以下方法在任何其他库中手动将其加载到控制器中:

$this->load->library('doctrine');

如果你安装了Doctrine.php applications/third_party,你会使用:

$autoload[‘libraries’] = array('third_party/doctrine');

要么

$this->load->library('third_party/doctrine');

一个例子控制器中提供以下接下来会发生什么.

设置命令行工具

Doctrine附带了许多在开发过程中非常有用的命令行工具.

检查Doctrine.php文件中是否存在这些行,以加载Symfony类以使用命令行工具(以及YAML映射文件):

$symfonyClassLoader = new ClassLoader('Symfony', APPPATH.'third_party/Doctrine');
$symfonyClassLoader->register();

您需要将应用程序EntityManager注册到控制台工具,以通过在应用程序目录中创建cli-doctrine.php文件来使用这些任务,其中包含以下内容:

 <?php

 /**
 * Doctrine CLI bootstrap for CodeIgniter
 *
 */

 define('APPPATH', dirname(__FILE__) . '/');
define('BASEPATH', APPPATH . '/../system/');
define('ENVIRONMENT', 'development');

 require APPPATH.'libraries/Doctrine.php';

$doctrine = new Doctrine;
$em = $doctrine->em;

 $helperSet = new \Symfony\Component\Console\Helper\HelperSet(array(
    'db' => new \Doctrine\DBAL\Tools\Console\Helper\ConnectionHelper($em->getConnection()),
    'em' => new \Doctrine\ORM\Tools\Console\Helper\EntityManagerHelper($em)
));

 \Doctrine\ORM\Tools\Console\ConsoleRunner::run($helperSet);

 ?>

现在通过PHP命令行运行此脚本,并且应该看到可用的命令列表.

php cli-doctrine.php

从数据库生成映射类:

php cli-doctrine.php orm:convert-mapping --from-database annotation models/Entities

如果您收到此错误: 致命错误:调用未定义的函数Doctrine\Common\Cache\apc_fetch() 安装PHP的APC扩展:

sudo apt-get install php-apc
sudo /etc/init.d/apache2 restart

对于生产模式:Doctrine建议在Doctrine.php中更改以下设置: - 使用像APC这样的真实缓存系统 - 禁用EchoSqlLogger - 关闭autoGenerateProxyClasses

下一步是什么

要在CI中使用Doctrine,请从控制器中调用它,例如:

应用/控制器/ my_controller.php:

function doctrine_orm()
{
    $this->load->library('Doctrine');
    $em = $this->doctrine->em;

    // do Doctrine stuff
    $productRepository = $em->getRepository('Product');
    $products = $productRepository->findAll();
    foreach ($products as $product):
        echo sprintf("-%s\n", $product->getName());
    endforeach;
}

但是,在执行任何Doctrine之前,必须先将数据库表映射到Doctrine"实体".在这里了解如何:https://www.doctrine-project.org/projects/doctrine-orm/en/2.6/tutorials/getting-started.html