How to Access Application Config from View in Zend Framework 2 (zf2)?

Question

I wanted to access the application config from a view. How can I achieve that in ZF 2?

Brest

Pass it from your controller action? If not, create a view helper and inject it with configuration in much the same manner as this example #16083029 then write your helper methods to access what you need. – Adelaideadelaja

How can I access it from a view helper ? – Brest

Take a look at the example I linked. Substitute ModelService with config and you have a helper that proxy's to the Config array. You then just need to write methods for your helper that access the array, and call those in your view. – Adelaideadelaja

I've done the same concept in ZF1 but I'm not sure How to get the Config array inside the helper, If I have to pass it to the helper? From where I can get it? – Brest

I've tried $sm = ServiceManagerFactory::getServiceManager(); $sm->get('Config'); but it leaves me with an exception Zend\ServiceManager\ServiceManager::get was unable to fetch or create an instance for ApplicationConfig – Brest

You inject the ServiceManager into your ViewHelper and then you gain access to everything that the ServiceManager has to offer. Inject it, don't call a static function. – Reverential

Answer 1

Actually you shouldn't need to access application config inside a view. In MVC, views just responsible for displaying/rendering data (output) and shouldn't contain any business or application logic.

If you really want to do that you can simply pass to view in your controller something like this:

<?php
namespace YourModule\Controller;

use Zend\View\Model\ViewModel;

// ...

public function anyAction()
{
    $config = $this->getServiceLocator()->get('config');
    $viewModel = new ViewModel();
    $viewModel->setVariables(array('config' => $config ));
    return $viewModel;
}

// ...
?>

So in your view.phtml file;

<div class="foo">
 ...
 <?php echo $this->config; ?>
 ...
</div>

Perfecto

Whilst you shouldn't have business logic in your controller, configuration may still affect rendering/display logic, e.g. a configuration value tells the view what theme it should render. I still agree that it should be the controller that sends configuration values to the view—as fine grained as possible—via the ViewModel, rather than the view pulling the global configuration out of the ServiceManager for example. – Retharethink

The "template ID" should not be in project configuration but in your models and those should be injected into the view. – Longspur

Answer 2

You should create a view helper.

Config.php

<?php
namespace Application\View\Helper;

class Config extends \Zend\View\Helper\AbstractHelper
{
    public function __construct($config)
    {
        $this->key = $config;
    }

    public function __invoke()
    {
        return $this->config;
    }

}

Module.php or theme.config.php

return array(
    'helpers' => array(
    'factories' => array(
        'config' => function ($sm) {
            return new \Application\View\Helper\Config(
                    $sm->getServiceLocator()->get('Application\Config')->get('config')
            );
        },
    )
),
);

Then you can use config variables in any view.

echo $this->config()->Section->key;

Speight

Answer 3

I created the module with controller plugin and view helper for reading a config in controllers and views. GitHub link __ Composer link

After installation via composer you can use it easily.

echo $this->configHelp('key_from_config'); //read specific key from config 

$config = $this->configHelp(); //return config object Zend\Config\Config
echo $config->key_from_config;

Peirce