/**
* Begins FragmentCache widget.
* Usage:
* if (Cache::getInstance()->beginCache('key', $this)) {
* $this->endCache();
* }
* @param string $key the key identifying the content to be cached.
* @param \yii\base\View $view view object
* @param integer $duration number of seconds that the data can remain valid in cache.
* Use 0 to indicate that the cached data will never expire.
* @return boolean
*/
public function beginCache($key, $view, $duration = 60)
{
$properties['id'] = $this->_cachePrefix . $key;
$properties['view'] = $view;
$properties['duration'] = $duration;
$cache = FragmentCache::begin($properties);
if ($cache->getCachedContent() !== false) {
$this->endCache();
return false;
}
return true;
}
/**
* Begins fragment caching.
* This method will display cached content if it is available.
* If not, it will start caching and would expect an [[endCache()]]
* call to end the cache and save the content into cache.
* A typical usage of fragment caching is as follows,
*
* ~~~
* if ($this->beginCache($id)) {
* // ...generate content here
* $this->endCache();
* }
* ~~~
*
* @param string $id a unique ID identifying the fragment to be cached.
* @param array $properties initial property values for [[FragmentCache]]
* @return boolean whether you should generate the content for caching.
* False if the cached version is available.
*/
public function beginCache($id, $properties = [])
{
$properties['id'] = $id;
$properties['view'] = $this;
/* @var $cache FragmentCache */
$cache = FragmentCache::begin($properties);
if ($cache->getCachedContent() !== false) {
$this->endCache();
return false;
} else {
return true;
}
}
