public function actionDelete($id) {
$this->loadModel($id)->delete();
// if AJAX request (triggered by deletion via admin grid view), we should not redirect the browser
if (!isset($_GET['ajax']))
$this->redirect(isset($_POST['returnUrl']) ? $_POST['returnUrl'] : array('admin'));
}
Now, I have changed like:
public function actionCancel(){
if (isset($_POST['id'])) {
$result = $this->loadModel($_POST['id'])->delete();
echo $result;
}