/**
* Lists all models.
*/
public function actionIndex()
{
$this->layout = '//layouts/column1';
$id = Yii::app()->user->id;
//echo Credits::getBalance(1);
// confirm email
//Credits::deduct(1, 500, 6);
$model = $this->loadModel($id);
$history_model = new CreditsHistory('search');
$history_model->unsetAttributes();
// clear any default values
if (isset($_GET['CreditsHistory'])) {
$history_model->attributes = $_GET['CreditsHistory'];
}
$this->render('index', array('model' => $model, 'history_model' => $history_model));
}
/**
* Returns the data model based on the primary key given in the GET variable.
* If the data model is not found, an HTTP exception will be raised.
* @param integer the ID of the model to be loaded
*/
public function loadModel($id)
{
$model = CreditsHistory::model()->findByPk($id);
if ($model === null) {
throw new CHttpException(404, 'The requested page does not exist.');
}
return $model;
}
public static function deduct($user_id, $amount, $item_id)
{
$user_id = (int) $user_id;
if (self::checkBalance($user_id, $item_id)) {
$transaction = Yii::app()->db->beginTransaction();
$history = new CreditsHistory();
$credit = Credits::model()->find('user_id = :user_id', array(':user_id' => $user_id));
try {
$history_data = array('user_id' => $user_id, 'credit_item_id' => $item_id, 'type' => 'deduction', 'value' => $amount);
$history->attributes = $history_data;
$history->save();
$new_balance = $credit->balance - $amount;
$credit_data = array('balance' => $new_balance);
$credit->attributes = $credit_data;
$credit->save();
$transaction->commit();
} catch (Exception $e) {
$transaction->rollback();
}
return true;
}
return false;
}
