common\models\Post::tableName PHP Method

    public static function tableName()
    {
        return '{{%post}}';
    }

 /**
  * @return string
  */
 public function actionIndex()
 {
     /* @var $postType PostType */
     /* @var $post Post */
     /* @var $taxonomies Taxonomy[] */
     /* @var $taxonomy Taxonomy */
     /* @var $lastMedia Media */
     $response = Yii::$app->response;
     $response->headers->set('Content-Type', 'text/xml; charset=UTF-8');
     $response->format = $response::FORMAT_RAW;
     $postTypes = PostType::find()->select(['id', 'post_type_slug'])->all();
     $taxonomies = Taxonomy::find()->select(['id', 'taxonomy_slug'])->all();
     $items = [];
     foreach ($postTypes as $postType) {
         if (!isset($this->_option['post_type'][$postType->id]['enable']) || !$this->_option['post_type'][$postType->id]['enable']) {
             continue;
         }
         if ($post = $postType->getPosts()->andWhere(['post_status' => 'publish'])->orderBy(['id' => SORT_DESC])->one()) {
             $lastmod = new \DateTime($post->post_modified, new \DateTimeZone(Option::get('time_zone')));
             $query = $postType->getPosts()->andWhere(['post_status' => 'publish']);
             $countQuery = clone $query;
             $pages = new Pagination(['totalCount' => $countQuery->count(), 'pageSize' => $this->_option['entries_per_page']]);
             for ($i = 1; $i <= $pages->pageCount; $i++) {
                 $items[] = ['loc' => Yii::$app->urlManager->hostInfo . Url::to(['view', 'type' => 'p', 'slug' => $postType->post_type_slug, 'page' => $i]), 'lastmod' => $lastmod->format('r')];
             }
         }
     }
     foreach ($taxonomies as $taxonomy) {
         if (!isset($this->_option['taxonomy'][$taxonomy->id]['enable']) || !$this->_option['taxonomy'][$taxonomy->id]['enable']) {
             continue;
         }
         if ($terms = $taxonomy->terms) {
             $post = Post::find()->from(['post' => Post::tableName()])->innerJoinWith(['terms' => function ($query) {
                 /* @var $query \yii\db\ActiveQuery */
                 $query->from(['term' => Term::tableName()]);
             }])->where(['IN', 'term.id', ArrayHelper::getColumn($terms, 'id')])->andWhere(['post.post_status' => 'publish'])->orderBy(['post.id' => SORT_DESC])->one();
             if ($post) {
                 $query = $taxonomy->getTerms();
                 $lastmod = new \DateTime($post->post_modified, new \DateTimeZone(Option::get('time_zone')));
                 $countQuery = clone $query;
                 $pages = new Pagination(['totalCount' => $countQuery->count(), 'pageSize' => $this->_option['entries_per_page']]);
                 for ($i = 1; $i <= $pages->pageCount; $i++) {
                     $items[] = ['loc' => Yii::$app->urlManager->hostInfo . Url::to(['view', 'type' => 'c', 'slug' => $taxonomy->taxonomy_slug, 'page' => $i]), 'lastmod' => $lastmod->format('r')];
                 }
             }
         }
     }
     if (isset($this->_option['media']['enable']) && $this->_option['media']['enable']) {
         $query = Media::find();
         $countQuery = clone $query;
         $pages = new Pagination(['totalCount' => $countQuery->count(), 'pageSize' => $this->_option['entries_per_page']]);
         if ($lastMedia = $query->orderBy(['id' => SORT_DESC])->one()) {
             $lastmod = new \DateTime($lastMedia->media_modified, new \DateTimeZone(Option::get('time_zone')));
             for ($i = 1; $i <= $pages->pageCount; $i++) {
                 $items[] = ['loc' => Yii::$app->urlManager->hostInfo . Url::to(['view', 'type' => 'm', 'slug' => 'media', 'page' => $i]), 'lastmod' => $lastmod->format('r')];
             }
         }
     }
     return $this->renderPartial('index', ['items' => $items]);
 }