/**
* Returns the views count for a specific model.
* Note: no bookkeeping record is fine. It means zero impressions...
*
* @param string $model_name
* @param int $model_id
* @param bool $unique whether to return the unique count or non unique
*
* @return int the requested views counter
*/
public static function getViewsCount($model_name, $model_id, $unique = true)
{
/* @var PageViewsStat $record */
$record = PageViewsStat::model()->findByAttributes(array('model_id' => $model_id, 'model_name' => $model_name));
if (!$record) {
return 0;
}
if ($unique) {
return $record->count_uniq;
}
return $record->count_non_uniq;
}
/**
* Loads and returns the 'PageViewsStat' record, based on this->modelClassName and this->modelId. Attempts to create
* a new record if none exists.
*
* @return mixed PageViewsStat or false if failure occurred
*/
private function _getStatsRecord()
{
$record = PageViewsStat::model()->findByAttributes(array('model_id' => $this->modelId, 'model_name' => $this->modelClassName));
if (!$record) {
// no such record yet. attempt to create it
$record = new PageViewsStat();
$record->model_name = $this->modelClassName;
$record->model_id = $this->modelId;
/* we use try-catch since it could fail due to race condition: from the time when findByAttributes was called
* several lines above another process could have done just the same, resulting in this save() failing
* due to DB level unique constraint on page_views_stats table.
* In this case, try to load the newly born record and use it.
*/
try {
$ret = $record->save();
} catch (CException $e) {
// see comment above... . Try to load the fresh record from the DB
$record = PageViewsStat::model()->findByAttributes(array('model_id' => $this->modelId, 'model_name' => $this->modelClassName));
if (!$record) {
// huston, we have a problem. this wasn't a simple race condition issue but something else. aborting ...
Yii::log("Error: couldn't create or load a new PageViewsStat for model class={$this->modelClassName} and model id={$this->modelId}. Cannot continue!", CLogger::LEVEL_ERROR, __METHOD__);
return false;
}
}
}
return $record;
}
