php – symfony2 – 在存储库或类中使用多个连接

发布时间：2020-12-13 16:35:45 所属栏目：PHP教程来源：网络整理

导读：我有多个连接,我有一个存储库类.我希望存储库类可以访问多个连接.它用于需要从多个数据库主机获取数据的报告. config.yml doctrine: dbal: default_connection: default connections: default: driver: "%db_default_driver%" host: "%db_default_host%" etc

我有多个连接,我有一个存储库类.我希望存储库类可以访问多个连接.它用于需要从多个数据库主机获取数据的报告.

config.yml

doctrine:
    dbal:
        default_connection:  default
        connections:
          default:
              driver:   "%db_default_driver%"
              host:     "%db_default_host%"
              etc..
          bookings:
              driver:   "%db_readonly_bookings_driver%"
              host:     "%db_readonly_bookings_host%"
              etc ...
          sessions:
              etc..

SalesJournalRepistory.php

namespace PortalSalesJournalBundleRepository;

use DoctrineORMEntityRepository;

class SalesJournalRepository extends EntityRepository 
{

  public $connDefault   = null;
  public $connBookings  = null;
  public $connSessions  = null;


  function __construct()
  {
    // this is where I get the error
    $this->connDefault  = $this->getManager('default')->getConnection();
    $this->connBookings = $this->getManager('bookings')->getConnection();
    $this->connSessions = $this->getManager('sessions')->getConnection();
  }

  function testQuery(){
     $sql = "SELECT * FROM testTableBookings LIMIT 10";
     $stmt = $this->connBookings->prepare($sql);
     $results = $stmt->fetchAll();

     print_r($results);
  }

  function testQuery2(){
     $sql = "SELECT * FROM testTableSessions LIMIT 10";
     $stmt = $this->connSessions->prepare($sql);
     $results = $stmt->fetchAll();

     print_r($results);
  }


}

我可以让它从一个控制器工作

$connDefault  = $this->getDoctrine()->getManager('default')->getConnection();
$connBookings = $this->getDoctrine()->getManager('bookings')->getConnection();

然而,我希望能够从存储库运行它.我得到以下错误

PHP Fatal error:  Call to a member function getConnection() on a non-object

我以为这可能会提供一些线索？ enjecting entities但是我有点困惑,不知道是不是？

EntityRepository只应该关注其拥有的实体(和管理者) – 所以将实体存储库与实体管理器混合是非常方便的.我建议你创建一个服务并注入原则 – 然后你可以查询任何你想要的.例如：

配置

[config.yml / services.yml]
services:
   sales_journal:
      class: AcmeDemoBundleServiceSalesJournal
       arguments: ['@doctrine']

服务

[AcmeDemoBundleServiceSalesJournal.php]

namespace AcmeDemoBundleService;

public class SalesJournal {

    private $connDefault;
    private $connBookings;
    private $connSessions;


    function __construct($doctrine)
    {
        $this->connDefault = $doctrine->getManager('default')->getConnection();
        $this->connBookings = $doctrine->getManager('bookings')->getConnection();
        $this->connSessions = $doctrine->getManager('sessions')->getConnection();
    }

    function testQuery()
    {
        $sql = "SELECT * FROM testTableBookings LIMIT 10";
        $stmt = $this->connBookings->prepare($sql);
        $results = $stmt->fetchAll();

        print_r($results);
    }

    function testQuery2()
    {
        $sql = "SELECT * FROM testTableSessions LIMIT 10";
        $stmt = $this->connSessions->prepare($sql);
        $results = $stmt->fetchAll();

        print_r($results);
    }
}

然后从您的控制器或您想要使用您可以做的服务：

// get the service
$sales_journal = $this->get('sales_journal');
// call relevent function
$sales_journal->testQuery();

（编辑：李大同）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!