如何注册View帮助器

Question

如何使用工厂注册View helper？

View\Helper\GenerateAnchor::class => GenerateAnchorFactory::class,

Answer 1

我想你只需要配置文件中的设置,但我将展示在Zend 3中注册视图助手的完整之路

首先,我们需要查看助手:

namespace MyNamespace\View\Helper;

use Zend\View\Helper\AbstractHelper;

class TestViewHelper extends AbstractHelper
{
    public function __invoke()
    {
        // your code...
    }
}

如果我们需要注入一些依赖项,那么我们需要创建自定义工厂,但是如果我们的视图助手不需要其他服务/类,那么我们可以跳过这一步

namespace MyNamespace\Factory\View\Helper;

use Interop\Container\ContainerInterface;
use Zend\ServiceManager\FactoryInterface;
use Zend\ServiceManager\ServiceLocatorInterface;
use MyNamespace\View\Helper\TestViewHelper;

class TestViewHelperFactory implements FactoryInterface
{
    /**
     *
     * @param ContainerInterface $container
     * @param string $requestedName
     * @param null|array $options
     * @return TestViewHelper
     */
    public function __invoke(ContainerInterface $container, $requestedName, array $options = null)
    {
        $class = $requestedName ? $requestedName : TestViewHelper::class;
        $auth = $container->get('MyCustomAuth');
        $viewHelper = new $class($auth);

        return $viewHelper;

    }
    /**
     * Provided for backwards compatibility; proxies to __invoke().
     *
     * @param ContainerInterface|ServiceLocatorInterface $container
     * @return TestViewHelper
     */
    public function createService(ServiceLocatorInterface $container)
    {
        return $this($container, TestViewHelper::class);
    }
}

最后一步是注册我们的视图助手 module.config.php

'view_helpers' => [
    'aliases' => [
        'viewPlugin' => View\Helper\TestViewHelper::class,
    ],
    'factories' => [
        View\Helper\TestViewHelper::class => InvokableFactory::class // Or use your own factory
    ]
],

并且......在我们的视图模板中,我们可以像这样使用它:

index.phtml

<?php echo $this->viewPlugin(); ?>