Sonata Admin - Include custom block / list view in edit template

config.yml

sonata_block:
    default_contexts: [cms]
    blocks:
        sonata.block.service.recent_contracts: ~

edit.html.twig

{% extends 'SonataAdminBundle:CRUD:edit.html.twig' %}

{% block sonata_tab_content %}

</div>

{{ sonata_block_render({
    'type': 'sonata.block.service.recent_contracts'
}) }}

recent_contracts.html.twig

{% extends sonata_block.templates.block_base %}

{% block block %}
    {% sonata_template_box 'This is the recent contracts list block.' %}

    <div class="sonata-contract-block-recent-contract panel panel-default">
        {% if settings.title %}
            <div class="panel-heading">
                <div class="panel-title">
                    <h4 class="sonata-contract-block-recent-contract">{{ settings.title }}</h4>
                </div>
            </div>
        {% endif %}

        {% if contracts|length > 0 %}
            <table class="sonata-contract-block-contract-container table table-condensed">
                {% for contract in contracts %}
                    <tr>
                        {% if context.getSetting('mode') == 'admin' %}
                            <td><a href="{{ url('admin_plusquam_contract_contract_edit', { 'id': contract.id }) }}">{{ contract.number }}</a></td>
                        {% else %}
                            <td><a href="{{ url('admin_plusquam_contract_contract_show', { 'reference': contract.updatedAt }) }}">{{ contract.updatedAt }}</a></td>
                        {% endif %}
                        <td>{{ contract.createdAt|format_datetime(null) }}</td>
                    </tr>
                {% endfor %}
            </table>
            <div class="panel-body">
                {% if context.getSetting('mode') == 'admin' %}
                    <a href="{{ url('admin_plusquam_contract_contract_list') }}" class="btn btn-primary btn-small pull-right"><i class="icon-list icon-white"></i>&nbsp;{{ 'view_all_contracts'|trans({}, 'SonataOrderBundle') }}</a>
                {% else %}
                    <a href="{{ url('admin_plusquam_contract_contract_list') }}" class="btn btn-primary btn-small pull-right"><i class="glyphicon glyphicon-list icon-white"></i>&nbsp;{{ 'view_all_contracts'|trans({}, 'SonataOrderBundle') }}</a>
                {% endif %}
            </div>
        {% else %}
            <div class="panel-body">
                {% if context.getSetting('mode') == 'admin' %}
                    <p>{{ 'no_contract_found'|trans({}, 'SonataOrderBundle') }}</p>
                {% else %}
                    <p>{{ 'sonata.contract.list.no_contracts'|trans({}, 'SonataOrderBundle') }}</p>
                {% endif %}
            </div>
        {% endif %}
    </div>
{% endblock %}

RecentContractsBlockService.php

<?php

namespace Plusquam\Bundle\ContractBundle\Block;

use Sonata\BlockBundle\Block\BlockContextInterface;
use Symfony\Bundle\FrameworkBundle\Templating\EngineInterface;
use Symfony\Component\HttpFoundation\Response;

use Sonata\AdminBundle\Form\FormMapper;
use Sonata\AdminBundle\Validator\ErrorElement;

use Sonata\BlockBundle\Model\BlockInterface;
use Sonata\BlockBundle\Block\BaseBlockService;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Symfony\Component\Security\Core\SecurityContextInterface;

use Doctrine\ORM\EntityManager;

/**
 * Class RecentContractBlockService
 *
 * @package Plusquam\Bundle\ContractBundle\Block;
 *
 * @author  Michael Borchers
 */
class RecentContractsBlockService extends BaseBlockService
{
    /**
     * @var EntityManager
     */
    protected $entityManager;

    /**
     * @var SecurityContextInterface
     */
    protected $securityContext;

    /**
     * @param string                   $name
     * @param EngineInterface          $templating
     * @param EntityManager            $entityManager
     * @param SecurityContextInterface $securityContext
     */
    public function __construct($name, EngineInterface $templating, EntityManager $entityManager, SecurityContextInterface $securityContext)
    {
        $this->entityManager   = $entityManager;
        $this->securityContext = $securityContext;

        parent::__construct($name, $templating);
    }

    /**
     * {@inheritdoc}
     */
    public function execute(BlockContextInterface $blockContext, Response $response = null)
    {
        $criteria = array();

        $user = $this->securityContext->getToken()->getUser();
        $criteria['projectManager'] = $user->getId();

        return $this->renderPrivateResponse($blockContext->getTemplate(), array(
            'context'   => $blockContext,
            'settings'  => $blockContext->getSettings(),
            'block'     => $blockContext->getBlock(),
            'contracts' => $this->entityManager->getRepository('PlusquamContractBundle:Contract')
                ->findBy($criteria, array('updatedAt' => 'DESC'), $blockContext->getSetting('number'))
        ), $response);
    }

    /**
     * {@inheritdoc}
     */
    public function getName()
    {
        return 'Recent Contracts';
    }

    /**
     * {@inheritdoc}
     */
    public function setDefaultSettings(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults(array(
            'number'     => 5,
            'mode'       => 'admin',
            'title'      => 'Recent Contracts',
            'template'   => 'PlusquamContractBundle:Block:recent_contracts.html.twig'
        ));
    }
}

services.xml

<?xml version="1.0" ?>

<container xmlns="http://symfony.com/schema/dic/services"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">

    <parameters>
        <parameter key="plusquam.contract_bundle.block.recent_contracts.class">Plusquam\Bundle\ContractBundle\Block\RecentContractsBlockService</parameter>
    </parameters>

    <services>
        <service id="sonata.block.service.recent_contracts" class="%plusquam.contract_bundle.block.recent_contracts.class%">
            <tag name="sonata.block"/>
            
            <argument>sonata.order.block.recent_orders</argument>
            <argument type="service" id="templating"></argument>            
            <argument type="service" id="doctrine.orm.entity_manager"></argument>            
            <argument type="service" id="security.context"></argument>
        </service>
    </services>

</container>