public function actionIndex($category = null)
{
$query = News::find();
if ($category !== null && !in_array($category, ['all', 'my'])) {
$category = Category::find()->where(['slug' => $category])->one();
if (!$category) {
throw new NotFoundHttpException('Page not found.');
}
$query->andWhere(['category_id' => $category->id]);
}
if ($category === 'my') {
if (Yii::$app->user->isGuest) {
$this->redirect('/news');
} else {
$query->andWhere(['author_id' => Yii::$app->user->identity->id]);
}
}
return $this->render('index', array('dataProvider' => $this->getDataProvider($query), 'category' => $category));
}
