配置类别名以与Zend\Di\Di一起使用 [英] Configuring class alias for using with Zend\Di\Di

问题描述

我有一个记录器类（Application\Debug\Logger），用于将各种调试消息从整个应用程序记录到日志文件中。
而且我想使用简单的别名 logger来获取该类的实例。
因此，我尝试配置Zend\Di\Di，以便可以在模块控制器或其他应用程序组件中执行类似的操作：

I have a logger class (Application\Debug\Logger) for logging various debug messages from whole application to log files. And I would like to get instance of that class using simple alias 'logger'. So I try to configure Zend\Di\Di, so that I could do something like this in, for example, module controller or another application components:

$di = new \Zend\Di\Di();
$logger = $di->get('logger');
//$logger should be Application\Debug\Logger instance...

为此，我在Application / config / module.config.php中具有以下内容：

To achieve this, I have this in Application/config/module.config.php:

'di' => array(
    'instance' => array(
        'alias' => array(
            'logger' => 'Application\Debug\Logger',
        ),
    ),
)

但问题是：别名'logger不起作用。我可以使用Di并通过全名（Application\Debug\Logger）获取类，但不能通过别名获取（我得到错误：在提供的定义中找不到类记录器）。我想我必须以某种方式将配置传递给Di，但我不知道如何。您能帮我吗？

But the problem is: alias 'logger' doesn`t work. I can use Di and get class by full name (Application\Debug\Logger), but not by alias (I get error: Class logger could not be located in provided definitions). I suppose that I have to pass the configuration to Di somehow, but I don't know how. Can you help me?

推荐答案

我已经找到了部分解决方案来解决我的问题。我注意到，当我调用ServiceManager时，它也使用依赖注入配置来查找正确的类，因此我可以调用：

I`ve found partial solution of my problem. I noticed that when I call ServiceManager, it uses also Dependency Injection configuration to find proper class, so I can call:

$logger = $this->getServiceLocator()->get('logger');

在控制器中通过为DI配置的别名获取记录器实例。

in the controller to get logger instance by alias configured for DI.

因此，在我的配置文件中，我还可以输入：

So in my config file I could also put:

'service_manager' => array(
    'invokables' => array(
        'logger' => 'Application\Debug\Logger',
    )
), 

，它的工作原理与前面的di config示例相同。
但是我仍然不完全了解如何正确使用DI，因此，如果有人可以向我解释它，我将不胜感激。

and it works the same as previous di config example. But I still don`t fully understand how I can properly use DI, so I would be grateful if someone could explain it to me.

这篇关于配置类别名以与Zend\Di\Di一起使用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！