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

    public function indexAction(Request $request)
    {
        $source = new Entity('OjsJournalBundle:JournalContact', 'admin');
        $grid = $this->get('grid');
        $grid->setSource($source);
        $gridAction = $this->get('grid_action');
        $rowAction = [];
        $rowAction[] = $gridAction->showAction('ojs_admin_contact_show', 'id');
        $rowAction[] = $gridAction->editAction('ojs_admin_contact_edit', 'id');
        $rowAction[] = $gridAction->deleteAction('ojs_admin_contact_delete', 'id');
        $actionColumn = new ActionsColumn("actions", 'actions');
        $actionColumn->setRowActions($rowAction);
        $grid->addColumn($actionColumn);
        return $grid->getGridResponse('OjsAdminBundle:AdminContact:index.html.twig', ['grid' => $grid]);
    }