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PartialLoop.php
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PartialLoop.php
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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\View\Helper;
use Iterator;
use Traversable;
use Zend\Stdlib\ArrayUtils;
use Zend\View\Exception;
/**
* Helper for rendering a template fragment in its own variable scope; iterates
* over data provided and renders for each iteration.
*/
class PartialLoop extends Partial
{
/**
* Marker to where the pointer is at in the loop
*
* @var int
*/
protected $partialCounter = 0;
/**
* Renders a template fragment within a variable scope distinct from the
* calling View object.
*
* If no arguments are provided, returns object instance.
*
* @param string $name Name of view script
* @param array $values Variables to populate in the view
* @throws Exception\InvalidArgumentException
* @return string
*/
public function __invoke($name = null, $values = null)
{
if (0 == func_num_args()) {
return $this;
}
if (!is_array($values)) {
if ($values instanceof Traversable) {
$values = ArrayUtils::iteratorToArray($values);
} elseif (is_object($values) && method_exists($values, 'toArray')) {
$values = $values->toArray();
} else {
throw new Exception\InvalidArgumentException('PartialLoop helper requires iterable data');
}
}
// reset the counter if it's called again
$this->partialCounter = 0;
$content = '';
foreach ($values as $item) {
$this->partialCounter++;
$content .= parent::__invoke($name, $item);
}
return $content;
}
/**
* Get the partial counter
*
* @return int
*/
public function getPartialCounter()
{
return $this->partialCounter;
}
}