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fragment cache WIP

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This commit is contained in:
Qiang Xue
2013-03-25 19:39:09 -04:00
parent 2f3cc8f16e
commit 27f5c49bd5
2 changed files with 48 additions and 4 deletions
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33
framework/widgets/FragmentCache.php
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@ -61,6 +61,16 @@ class FragmentCache extends Widget
* the fragment cache according to specific setting (e.g. enable fragment cache only for GET requests).
*/
public $enabled = true;
/**
* @var \yii\base\View the view object within which this widget is sued. If not set,
* the view registered with the application will be used. This is mainly used by dynamic content feature.
*/
public $view;
/**
* @var array
*/
public $dynamicPlaceholders;
/**
* Marks the start of content to be cached.
@ -70,7 +80,11 @@ class FragmentCache extends Widget
*/
public function init()
{
if ($this->view === null) {
$this->view = Yii::$app->getView();
}
if ($this->getCachedContent() === false && $this->getCache() !== null) {
array_push($this->view->cachingStack, $this);
ob_start();
ob_implicit_flush(false);
}
@ -88,10 +102,12 @@ class FragmentCache extends Widget
echo $content;
} elseif (($cache = $this->getCache()) !== false) {
$content = ob_get_clean();
array_pop($this->view->cachingStack);
if (is_array($this->dependency)) {
$this->dependency = Yii::createObject($this->dependency);
}
$cache->set($this->calculateKey(), $content, $this->duration, $this->dependency);
$data = array($content, $this->dynamicPlaceholders);
$cache->set($this->calculateKey(), $data, $this->duration, $this->dependency);
echo $content;
}
}
@ -108,11 +124,20 @@ class FragmentCache extends Widget
public function getCachedContent()
{
if ($this->_content === null) {
$this->_content = false;
if (($cache = $this->getCache()) !== null) {
$key = $this->calculateKey();
$this->_content = $cache->get($key);
} else {
$this->_content = false;
$data = $cache->get($key);
if (is_array($data) && count($data) === 2) {
list ($content, $placeholders) = $data;
if (is_array($placeholders) && count($placeholders) > 0) {
foreach ($placeholders as $name => $statements) {
$placeholders[$name] = $this->view->evaluateDynamicContent($statements);
}
$content = strtr($content, $placeholders);
}
$this->_content = $content;
}
}
}
return $this->_content;