Ojs\AdminBundle\Controller\AdminFileController::indexAction PHP Method

    public function indexAction()
    {
        $source = new Entity('OjsAdminBundle:AdminFile');
        $grid = $this->get('grid')->setSource($source);
        $gridAction = $this->get('grid_action');
        $actionColumn = new ActionsColumn("actions", 'actions');
        $rowAction[] = $gridAction->showAction('ojs_admin_file_show', 'id');
        $rowAction[] = $gridAction->editAction('ojs_admin_file_edit', 'id');
        $rowAction[] = $gridAction->deleteAction('ojs_admin_file_delete', 'id');
        $actionColumn->setRowActions($rowAction);
        $grid->addColumn($actionColumn);
        $data = [];
        $data['grid'] = $grid;
        return $grid->getGridResponse('OjsAdminBundle:AdminFile:index.html.twig', $data);
    }