Lithium filter to inject data into elements.

li3_filter_inject_data_into_elements.php

<?php

use lithium\net\http\Media;
        
$injectDataIntoElements = function(array $elements = [], array $data = []) {
    Media::applyFilter('view', function($self, $params, $chain) use ($elements, $data) {
        $view = $chain->next($self, $params, $chain);
                
        $view->applyFilter('_step', function($self, $params, $chain) use ($elements, $data) {
            $whitelisted = in_array($params['params']['template'], $elements);
        
            if ($params['step']['path'] == 'element' && $whitelisted) {
                $params['data'] += $data;
            }
            return $chain->next($self, $params, $chain);
        });
  
        return $view;
    });
};  

?>