public function actionNewCategory()
    {
        $model = new Category();
        $model->visible = 1;
        $model->sort = 0;
        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            Log::info('Category added', $model->id, __METHOD__);
            $this->success(Yii::t('podium/flash', 'New category has been created.'));
            return $this->redirect(['admin/categories']);
        }
        return $this->render('category', [
            'model' => $model,
            'categories' => Category::find()->orderBy(['sort' => SORT_ASC, 'id' => SORT_ASC])->all()
        ]);
    }