在zf2中配置多个数据库
如何在Zend Framework 2中配置(和使用)多个数据库?目前,我在global.php中有以下内容:
return array( 'db' => array(
'driver' => 'Pdo',
'dsn' => 'mysql:dbname=my_db;host=localhost',
'driver_options' => array(
PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES \'UTF8\''
),
'username' => 'user',
'password' => '******',
),
'service_manager' => array(
'factories' => array(
'Zend\Db\Adapter\Adapter' => 'Zend\Db\Adapter\AdapterServiceFactory',
),
),
);
但是我看不到添加第二种方法。
回答:
如果查看Zend \ Db \ Adapter \
AdapterServiceFactory,您会看到适配器配置仅指向一个键'db'
。这意味着它构建的适配器将始终使用此(唯一)配置密钥。
我建议您创建自己的工厂,如下所示:
namespace Your\Namespace;use Zend\ServiceManager\FactoryInterface;
use Zend\ServiceManager\ServiceLocatorInterface;
use Zend\Db\Adapter\Adapter;
class MyAdapterFactory implements FactoryInterface
{
protected $configKey;
public function __construct($key)
{
$this->configKey = $key;
}
public function createService(ServiceLocatorInterface $serviceLocator)
{
$config = $serviceLocator->get('Config');
return new Adapter($config[$this->configKey]);
}
}
在您的主模块(或任何其他模块)中,将以下内容添加到Module.php文件中,以将适配器工厂声明为Zend Service Manager:
use Your\Namespace\MyAdapterFactory;use Zend\ModuleManager\Feature\ServiceProviderInterface;
class Module implements ServiceProviderInterface{
//Previous code
public function getServiceConfig()
{
return array(
'factories' => array(
'myadapter1' => new MyAdapterFactory('dbconfigkey1'),
'myadapter2' => new MyAdapterFactory('dbconfigkey2'),
),
);
}
//...
现在,全局配置应如下所示:
return array('dbconfigkey1' => array(
'driver' => 'Pdo',
'dsn' => 'mysql:dbname=my_db;host=localhost',
'driver_options' => array(
PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES \'UTF8\''
),
'username' => 'user',
'password' => '******',
),
'dbconfigkey2' => array(
'driver' => 'Pdo',
'dsn' => 'mysql:dbname=my_db2;host=localhost',
'driver_options' => array(
PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES \'UTF8\''
),
'username' => 'user',
'password' => '******',
),
);
要使用适配器,您需要使用服务管理器来调用它们:
$adapter1=$serviceManager->get('myadapter1');$adapter2=$serviceManager->get('myadapter2');
从2.2版开始
现在,抽象服务工厂已成为zf2 Zend \ Db模块的一部分。可以在“ adapters”子键下添加多个配置键:
'db'=> array( 'adapters'=>array(
'adapter' => array(
'driver' => 'Pdo',
'dsn' => 'mysql:dbname=test;host=localhost',
'username' => 'readCredential',
'password' => '****'
),
'adapter2' => array(
'driver' => 'Pdo',
'dsn' => 'mysql:dbname=test;host=localhost',
'username' => 'rwCredential',
'password' => '****'
),
)
),
但是,需要“手动”添加AbstractServiceFactory,因为默认情况下并非如此:
'service_manager' => array( 'abstract_factories' => array(
'Zend\Db\Adapter\AdapterAbstractServiceFactory',
)
),
可以像以前一样访问适配器:
$adapter1=$serviceManager->get('adapter');$adapter2=$serviceManager->get('adapter2');
从性能角度来看,第二种方法更好:将实例化一个对象(抽象工厂)以(可能)创建不同的适配器。而在以前的方法中,每个配置创建一个对象。
以上是 在zf2中配置多个数据库 的全部内容, 来源链接: utcz.com/qa/415848.html