Li3 custom filter

li3_custom_filter.php

Dispatcher::applyFilter('_callable', function($self, $params, $chain) {
	$chain = $chain->next($self, $params, $chain);
	$chain->applyFilter('custom_filter', function($self, $params, $chain) {
		$params['text'] = 'filtered text';
		return $chain->next($self, $params, $chain);
	});
	return $chain;
});

//controller action
public function custom_filter() {
	$params = array('text' => 'context text');
	$filteredParams = $this->_filter(__METHOD__, $params, function($self, $params) {
		return $params;
	});
	var_dump($filteredParams);die;
	return $params;
}