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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| <?php | ||
| /** | ||
| * Zend Framework | ||
| * | ||
| * LICENSE | ||
| * | ||
| * This source file is subject to the new BSD license that is bundled | ||
| * with this package in the file LICENSE.txt. | ||
| * It is also available through the world-wide-web at this URL: | ||
| * http://framework.zend.com/license/new-bsd | ||
| * If you did not receive a copy of the license and are unable to | ||
| * obtain it through the world-wide-web, please send an email | ||
| * to license@zend.com so we can send you a copy immediately. | ||
| * | ||
| * @category Zend | ||
| * @package Zend_View | ||
| * @subpackage Helper | ||
| * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com) | ||
| * @license http://framework.zend.com/license/new-bsd New BSD License | ||
| */ | ||
|
|
||
| /** | ||
| * @namespace | ||
| */ | ||
| namespace Zend\View\Helper; | ||
|
|
||
| use Zend\View\Exception, | ||
| Zend\View\Model; | ||
|
|
||
| /** | ||
| * Helper for rendering child view models | ||
| * | ||
| * Finds children matching "capture-to" values, and renders them using the | ||
| * composed view instance. | ||
| * | ||
| * @package Zend_View | ||
| * @subpackage Helper | ||
| * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com) | ||
| * @license http://framework.zend.com/license/new-bsd New BSD License | ||
| */ | ||
| class RenderChildModel extends AbstractHelper | ||
| { | ||
| /** | ||
| * @var Model Current view model | ||
| */ | ||
| protected $current; | ||
|
|
||
| /** | ||
| * @var ViewModel | ||
| */ | ||
| protected $viewModelHelper; | ||
|
|
||
| /** | ||
| * Invoke as a function | ||
| * | ||
| * Proxies to {render()}. | ||
| * | ||
| * @param string $child | ||
| * @return string | ||
| */ | ||
| public function __invoke($child) | ||
| { | ||
| return $this->render($child); | ||
| } | ||
|
|
||
| /** | ||
| * Render a model | ||
| * | ||
| * If a matching child model is found, it is rendered. If not, an empty | ||
| * string is returned. | ||
| * | ||
| * @param string $child | ||
| * @return string | ||
| */ | ||
| public function render($child) | ||
| { | ||
| $model = $this->findChild($child); | ||
| if (!$model) { | ||
| return ''; | ||
| } | ||
|
|
||
| $current = $this->current; | ||
| $view = $this->getView(); | ||
| $return = $view->render($model); | ||
| $helper = $this->getViewModelHelper(); | ||
| $helper->setCurrent($current); | ||
| return $return; | ||
| } | ||
|
|
||
| /** | ||
| * Find the named child model | ||
| * | ||
| * Iterates through the current view model, looking for a child model that | ||
| * has a captureTo value matching the requested $child. If found, that child | ||
| * model is returned; otherwise, a boolean false is returned. | ||
| * | ||
| * @param string $child | ||
| * @return false|Model | ||
| */ | ||
| protected function findChild($child) | ||
| { | ||
| $this->current = $model = $this->getCurrent(); | ||
| foreach ($model->getChildren() as $childModel) { | ||
| if ($childModel->captureTo() == $child) { | ||
| return $childModel; | ||
| } | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| /** | ||
| * Get the current view model | ||
| * | ||
| * @return null|Model | ||
| */ | ||
| protected function getCurrent() | ||
| { | ||
| $helper = $this->getViewModelHelper(); | ||
| if (!$helper->hasCurrent()) { | ||
| throw new Exception\RuntimeException(sprintf( | ||
| '%s: no view model currently registered in renderer; cannot query for children', | ||
| __METHOD__ | ||
| )); | ||
| } | ||
| return $helper->getCurrent(); | ||
| } | ||
|
|
||
| /** | ||
| * Retrieve the view model helper | ||
| * | ||
| * @return ViewModel | ||
| */ | ||
| protected function getViewModelHelper() | ||
| { | ||
| if ($this->viewModelHelper) { | ||
| return $this->viewModelHelper; | ||
| } | ||
| $view = $this->getView(); | ||
| $this->viewModelHelper = $view->plugin('view_model'); | ||
| return $this->viewModelHelper; | ||
| } | ||
| } |
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