src/controllers/ExtensionsController.php
public function actionIndex()
    {
        $extensions = ExtensionsManager::module()->getExtensions();
        return $this->render(
            'index',
            [
                'dataProvider' => new ArrayDataProvider([
                    'allModels' => $extensions,
                    'sort' => [
                        'attributes' => ['composer_name', 'composer_type', 'is_active'],
                    ],
                    'pagination' => [
                        'defaultPageSize' => 10,
                        'pageSize' => ExtensionsManager::module()->extensionsPerPage,
                    ],
                ]),
            ]
        );
    }
public function actionIndex()
    {
        $extensions = ExtensionsManager::module()->getExtensions();
        return $this->render(
            'index',
            [
                'dataProvider' => new ArrayDataProvider([
                    'allModels' => $extensions,
                    'sort' => [
                        'attributes' => ['composer_name', 'composer_type', 'is_active'],
                    ],
                    'pagination' => [
                        'defaultPageSize' => 10,
                        'pageSize' => ExtensionsManager::module()->extensionsPerPage,
                    ],
                ]),
            ]
        );
    }
Shows installed extensions