public function actionSearch()
{
$searchModel = new Search();
$keyword = Yii::$app->request->get('keyword');
if (empty($keyword)) {
$this->goHome();
}
// 记录log
$model = new SearchLog();
$model->setAttributes(['user_id' => Yii::$app->user->isGuest ? '' : Yii::$app->user->identity->getId(), 'keyword' => $keyword, 'created_at' => time()]);
$model->save();
$dataProvider = $searchModel->search($keyword);
return $this->render('search', ['searchModel' => $searchModel, 'dataProvider' => $dataProvider]);
}