我最近决定在使用Zend Framework 1 3年后使用Zend Framework 3.这个决定令我头疼,Zend 3而不是让事情变得更容易让事情变得更加困难。
在Zend 1中,我按如下方式自定义数据库中所选模板的URL:
public function getUrl(string $file = '')
{
if($this->_helperBaseUrl === null) {
$this->_helperBaseUrl = new Zend_View_Helper_BaseUrl();
}
return $this->_helperBaseUrl->baseUrl($file);
}
public function getSkinUrl(string $file = '')
{
$themePath = 'themes/my-theme/'; //get from database
return $this->getUrl($themePath . ltrim($file, '/\\'));
}
然后在应用程序的任何部分(模型,帮助器,插件和视图),我可以像这样访问这个函数:
//view/scripts/index/index.phtml
$url_logo = My::app()->getSkinUrl('logo.jpg');
//this return http://example.com/themes/my-theme/logo.jpg
在Zend 3中,对我来说非常困难。有谁知道在Zend 3中做任何事情?或者如何从Zend 3中的模型中获取baseUrl?
答案 0 :(得分:2)
在Zend Framework 2/3中,您几乎可以将任何类注入另一个类。例如,如果您需要basePath
插件(在视图上下文中可用),您可以将此插件注入模型/服务或控制器类。这是推荐的方式:
这是您需要此插件或任何其他服务的类
use Zend\View\Helper\BasePath;
class MyService
{
/**
* @var BasePath
*/
protected $plugin;
/**
* MyService constructor.
*
* @param BasePath $basePath
*/
public function __construct(BasePath $basePath)
{
$this->plugin = $basePath;
}
/**
* @return BasePath
*/
public function getPlugin()
{
return $this->plugin;
}
/**
* @param BasePath $plugin
*/
public function setPlugin($plugin)
{
$this->plugin = $plugin;
}
}
现在,您需要工厂将一个依赖项注入另一个
use Interop\Container\ContainerInterface;
use Zend\ServiceManager\FactoryInterface;
use Zend\ServiceManager\ServiceLocatorInterface;
use MyNamespace\Service\MyService;
class MyServiceFactory implements FactoryInterface
{
/**
*
* @param ContainerInterface $container
* @param string $requestedName
* @param null|array $options
* @return MyService
*/
public function __invoke(ContainerInterface $container, $requestedName, array $options = null)
{
$class = $requestedName ? $requestedName : MyService::class;
$plugin = $container->get('ViewHelperManager')->get('BasePath'); // inject this class
$myService = new $class($plugin); // into this class
return $myService;
}
/**
* Provided for backwards compatibility; proxies to __invoke().
*
* @param ContainerInterface|ServiceLocatorInterface $container
* @return MyService
*/
public function createService(ServiceLocatorInterface $container)
{
return $this($container, MyService::class);
}
}
好的,现在MyService
有basePath
插件,但要在控制器中使用它,您必须将服务注入控制器。所以......
的IndexController
use MyNamespace\Service\MyService;
use Zend\Mvc\Controller\AbstractActionController;
class IndexController extends AbstractActionController
{
/**
* @var MyService
*/
protected $service;
/**
* IndexController constructor.
*
* @param MyService $service
*/
public function __construct(MyService $service)
{
$this->service = $service;
}
public function indexAction()
{
$plugin = $this->service->getPlugin(); // Zend\View\Helper\BasePath object
//...
}
}
......和我们控制器的工厂......
use Interop\Container\ContainerInterface;
use Zend\ServiceManager\FactoryInterface;
use Zend\ServiceManager\ServiceLocatorInterface;
use MyNamespace\Controller\IndexController;
class IndexControllerFactory implements FactoryInterface
{
/**
*
* @param ContainerInterface $container
* @param string $requestedName
* @param null|array $options
* @return IndexController
*/
public function __invoke(ContainerInterface $container, $requestedName, array $options = null)
{
$class = $requestedName ? $requestedName : IndexController::class;
$myService = $container->getServiceLocator()->get('MyNamespace\Service\MyService');
$controller = new $class($myService);
return $controller;
}
/**
* Provided for backwards compatibility; proxies to __invoke().
*
* @param ContainerInterface|ServiceLocatorInterface $container
* @return IndexController
*/
public function createService(ServiceLocatorInterface $container)
{
return $this($container, IndexController::class);
}
}
差不多完成了。最后一步是在module.config.php
文件
use MyNamespace\Controller;
use MyNamespace\Factory;
return [
//...
'service_manager' => [
'factories' => [
Service\MyService::class => Factory\Service\MyServiceFactory::class
]
],
'controllers' => [
'factories' => [
Controller\IndexController::class => Factory\Controller\IndexControllerFactory::class
],
],
]
容易,不是吗?
如果您需要控制器中的插件,而不是您的模型/服务类中的插件,则可以跳过此“教程”的MyService
部分,并将插件直接注入控制器类