在自定义视图助手zend框架2中确定当前请求

Question

I'm trying to determine the current request in a view helper for zend framework 2. the purpose is to add the class active to the navigation element. Here is my current code:

            <li class="active"><a href="<?php echo $this->url('home') ?>"><?php echo $this->translate('Home') ?></a></li>
            <li><a href="<?php echo $this->url('companies'); ?>"><?php echo $this->translate('Companies') ?></a>
            <li><a href="<?php echo $this->url('contacts'); ?>"><?php echo $this->translate('Contacts') ?></a>
            <li><a href="<?php echo $this->url('tasks'); ?>"><?php echo $this->translate('Tasks') ?></a>
            <li><a href="<?php echo $this->url('projects'); ?>"><?php echo $this->translate('Projects') ?></a>
            <li><a href="<?php echo $this->url('reports'); ?>"><?php echo $this->translate('Reports') ?></a>
            <li><a href="<?php echo $this->url('logout'); ?>"><?php echo $this->translate('Logout') ?></a>

As you can see, currently the home anchor is set to active.

My intentions are to do the following, per say:

            <li <?php echo $this->active('companies');?>

As you can see, I'm going to create a custom view helper called active that passes the companies module to the view helper. In the view helper, i need to access the request and ensure for this example the module is companies. So, any requests that use the company module would strategically set that navigation li element as active.

So really my question is how do i access the current module in the request in a custom view helper.

Answer 1

Here is the solution:

        <?php
        namespace Sam\View\Helper;

        use Zend\View\Helper\AbstractHelper;
        use Zend\ServiceManager\ServiceLocatorAwareInterface;

        class Active extends AbstractHelper implements ServiceLocatorAwareInterface
        {
            protected $activemodule;

            use \Zend\ServiceManager\ServiceLocatorAwareTrait;

            public function __invoke($module)
            {
                if($this->getRouteName() === $module){
                    return 'class="active"';
                }       
                return null;
            }

            public function getRouteName()
            {
                if (!$this->activemodule){          
                    $routeMatch = $this->getServiceLocator()->getServiceLocator()->get('Application')->getMvcEvent()->getRouteMatch();
                    $this->activemodule = $routeMatch->getMatchedRouteName();
                }
                return $this->activemodule;
            }
        }