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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\widgets;
use yii\base\Widget;
/**
* Block records all output between [[begin()]] and [[end()]] calls and stores it in [[\yii\base\View::$blocks]].
* for later use.
*
* [[\yii\base\View]] component contains two methods [[\yii\base\View::beginBlock()]] and [[\yii\base\View::endBlock()]].
* The general idea is that you're defining block default in a view or layout:
*
* ```php
* <?php $this->beginBlock('messages', true) ?>
* Nothing.
* <?php $this->endBlock() ?>
* ```
*
* And then overriding default in sub-views:
*
* ```php
* <?php $this->beginBlock('username') ?>
* Umm... hello?
* <?php $this->endBlock() ?>
* ```
*
* Second parameter defines if block content should be outputted which is desired when rendering its content but isn't
* desired when redefining it in subviews.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0
*/
class Block extends Widget
{
/**
* @var boolean whether to render the block content in place. Defaults to false,
* meaning the captured block content will not be displayed.
*/
public $renderInPlace = false;
/**
* Starts recording a block.
*/
public function init()
{
ob_start();
ob_implicit_flush(false);
}
/**
* Ends recording a block.
* This method stops output buffering and saves the rendering result as a named block in the view.
*/
public function run()
{
$block = ob_get_clean();
if ($this->renderInPlace) {
echo $block;
}
$this->view->blocks[$this->getId()] = $block;
}
}