How to query and display data in Symfony2 layout.html.twig?

Question

layout.html.twig If there are public parts such as sidebars that need to be queried and displayed, what is the best way to operate them?

Answer 1

http://symfony.cn/docs/quick_tour/the...

Answer 2

Two methods:

1. Separate a .twig file (such as test.twig) in the layout where data needs to be read from the database, and use the render Controller method in the layout:

{{ render(controller('AppBundle:ControllerName:MethodName', { 'params': 3 })) }}

In ControllerName::MethodName render test.twig file:

public function MethodName($params)
{
    $repository = $this->get('doctrine.orm.entity_manager')
        ->getRepository('AppBundle:EntityName');
    
    return $this->render('AppBundle:ControllerName:test.twig', array(
        'result' => $repository->findByParams($params)
    ));
}

2. Use the KernelResponse event to dynamically add global variables

public function __construct(ContainerInterface $container)
{
    // container 需要通过 service.yml 注入
    $this->container = $container;
}

public function onKernelResponse()
{
    $twig = $this->container->get('twig');
    $em   = $this->container->get('doctrine.orm.entity_manager');
    
    $repository = $em->getRepository('AppBundle:EntityName');

    $twig->addGlobal('result', $repository->findByParams());
}

Only the core code is written, you also need to configure the service