如何在Symfony2中将json渲染成树枝

Question

问题是如何将json传递给twig来渲染模板。我试图用JsonResponse对象传递一个json，但我没有找到渲染模板的方法。

TarifasController.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace AppBundle\Controller\Admin;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Method;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Security;
use AppBundle\Entity\Tarifa;

/**
 *
 * @Route("/tarifas")
 */
class TarifasController extends Controller
{

    /**
     * @Route("/", name="tarifa_index")
     */
    public function indexAction()
    {
        $entityManager = $this->getDoctrine()->getManager();
        $tarifas = $entityManager->getRepository('AppBundle:Tarifa')->findAll();

        return $this->render('admin/tarifas/index.html.twig', array('tarifas' => $tarifas));
        //return new JsonResponse(array('json_tarifas' => json_encode($tarifas)));

    }
}

index.html.twig

{% extends 'admin/layout.html.twig' %}

{% block body_id 'admin_post_show' %}

{% block main %}

    <h1>{{ 'label.project_list'|trans }}</h1>

    <table id="tarifas_index" class="table table-striped">
        <thead>
        <tr>
            <th>{{ 'Id' }}</th>
            <th><i class="fa fa-user"></i> {{ 'label.title'|trans }}</th>
            <th><i class="fa fa-calendar"></i> {{ 'label.summary'|trans }}</th>
            <th><i class="fa fa-calendar"></i> {{ 'label.content'|trans }}</th>
            <th><i class="fa fa-cogs"></i> {{ 'label.actions'|trans }}</th>
        </tr>
        </thead>
        <tbody>
        {% for tarifa in tarifas %}
            <tr>
                <td>{{ tarifa.id }}</td>
                <td>{{ tarifa.codigo }}</td>
                <td>{{ tarifa.nombre }}</td>
                <td>{{ tarifa.razon }}</td>
                <td>
                    <div class="item-actions">
                        <a href="{{ path('project_detail', { id: tarifa.id }) }}" class="btn btn-sm btn-default">
                            {{ 'action.show'|trans }}
                        </a>
                    </div>
                </td>
            </tr>
        {% endfor %}
        </tbody>
    </table>

    <script>
        $(document).ready( function () {
            $('#tarifas_index').DataTable({
                data: tarifas
            });
        } );
    </script>

{% endblock %}

如何从控制器传递json以在DataTable中使用它（在twig模板中），但是在此控制器中保存渲染。拜托，你能帮帮我吗？

Answer 1

我不明白你想要实现什么，但你可以简单地将json编码和普通数据发送到你的树枝，使用它你想要的

return $this->render('admin/tarifas/index.html.twig', array(
    'tarifas' => $tarifas
    'json_tarifas' => json_encode($tarifas)
));

Answer 2

你可以像这样渲染，

return $this->render('admin/tarifas/index.html.twig', array(
    'tarifas' => $tarifas
    'json_tarifas' => json_encode($tarifas)
));

并在树枝上检索这样的，

<script type="text/javascript">
    $(document).ready( function () {
        $('#tarifas_index').DataTable({
            data: $.parseJSON('{{ json_tarifas | raw }}')
        });
    } );
</script>