ZF2 How to use global variables in the view - php

Question

In ZF1 I used to declare variables in the application.ini
brandname = "Example"
weburl = "http://www.example.com/"
assetsurl = "http://assets.example.com/"
And in the Bootstrap I did this so i could access them in the view
define('BRANDNAME', $this->getApplication()->getOption("brandname"));
define('WEBURL', $this->getApplication()->getOption("weburl"));
define('ASSETSURL', $this->getApplication()->getOption("assetsurl"));
Whats the ZF2 way to do this, I know that i can create an array in the local.php config file like:
return array(
'example' => array(
'brandname' => 'Example',
'weburl' => 'http://www.example.com/',
'asseturl' => 'http://assets.example.com/',
),
);
When I want to access that variable in the controller I can do
$config = $this->getServiceLocator()->get('Config');
$config['example']['brandname']);
So far so good... but how do i access this variable in the view?
I don't want to create a view variable for it in every controller. And when i try the above in a view phtml file i get an error.
Zend\View\HelperPluginManager::get was unable to fetch or create an instance for getServiceLocator
Any ideas?

Answer 1

You could create a sinmple view helper to act as a proxy for your config, (totally un tested).
Module.php
public function getViewHelperConfig()
{
return array(
'factories' => array(
'configItem' => function ($helperPluginManager) {
$serviceLocator = $helperPluginManager->getServiceLocator();
$viewHelper = new View\Helper\ConfigItem();
$viewHelper->setServiceLocator($serviceLocator);
return $viewHelper;
}
),
);
}
ConfigItem.php
<?php
namespace Application\View\Helper;
use Zend\View\Helper\AbstractHelper;
use Zend\ServiceManager\ServiceManager;
/**
* Returns total value (with tax)
*
*/
class ConfigItem extends AbstractHelper
{
/**
* Service Locator
* #var ServiceManager
*/
protected $serviceLocator;
/**
* __invoke
*
* #access public
* #param string
* #return String
*/
public function __invoke($value)
{
$config = $this->serviceLocator->get('config');
if(isset($config[$value])) {
return $config[$value];
}
return NULL;
// we could return a default value, or throw exception etc here
}
/**
* Setter for $serviceLocator
* #param ServiceManager $serviceLocator
*/
public function setServiceLocator(ServiceManager $serviceLocator)
{
$this->serviceLocator = $serviceLocator;
}
}
You could then do something like this in your view, assuming you have them set in your config of course :)
echo $this->configItem('config_key');
echo $this->configItem('web_url');
I would personally tend to just pass the values through to the view every time though, keeping the view a dumb as possible.

Answer 2

I answered this before on a different post.
/* Inside your action controller method */
// Passing Var Data to Your Layout
$this->layout()->setVariable('stack', 'overflow');
// Passing Var Data to Your Template
$viewModel = new ViewModel(array( 'stack' => 'overflow' ));
/* In Either layout.phtml or {Your Template File}.phtml */
echo $this->stack; // Will print overview
That's it... No need to mess with view helpers, event manager, service manager, or anything else.
Enjoy!