php - 在树枝 symfony2 中使用 sql 进行 foreach

Question

我在 PHP 中有以下代码：

$em     = $this->getDoctrine()->getManager(); 
$entity = $em->getRepository('DataBundle:SomeData')->findAll();

foreach ($entity as $item)
{
   echo $item->getSomething();

   $data = $em->getRepository('DataBundle:SomeData')
              ->findBySomeId($item->getSomeId());

   foreach ($data as $somevar)
   {
      echo $somevar->getSomeOtherData();   
   }
}

可以用树枝翻译吗？如果是这样，我将不胜感激有关如何完成的指示。

谢谢

Answer 1

您需要在模型中进行实体计算，由控制器启动，并将这些对象传递到视图中以推送到模板引擎中。

树枝看起来像这样：

{% for item in entity %}
  {{ item.getSomething }}

  {% for somevar in data %}
     {{ somevar.getSomeOtherData }}
  {% endfor %}
{% endfor %}

编辑：这是一个更精确的答案，您可以从这里推断：

// Controller
public function demoAction()
{
    $demoModel = $this->get('demo.bundle.model.demo');
    $demoView = $this->get('demo.bundle.view.demo');
    $demoResult = $demoModel->myModelCalculation();

    return $demoView->myDemoView($demoResult);
}

//Model
public function myModelCalculation()
{
    return $this->getRepository('DataBundle:SomeData')->findAll();
}

//View
public function myDemoView($entity)
{
    return $this->getTemplatingEngine()->renderResponse('DemoBundle:demo:index.html.twig', array('entity' => $entity));
}

//Twig
{% for item in entity %}
    {{ item.getSomething }}
{% endfor %}

Symfony2 很容易学习，我建议学习他们的教程并阅读文档。 http://symfony.com/doc/current/index.html

Answer 2

//SomeData.php
// ....
class SomeData 
{
  // ...

  /**
   * @ORM\OneToMany(targetEntity="SomeData")
   */
  private $children;
}


//Controler
class SomeController
{
  /**
   * @Template()
   */
  public function someAction()
  {
    return ('entities' => $this->getDoctrine()->getRepository('DataBundle:SomeData')->findAll());
  }
}

//some.html.twig
{% for item in entities %}
   {{ item.getSomething }}

   {% for somevar in item.children %}
      {{ somevar.getSomeOtherData }}
   {% endfor %}
{% endfor %}