在Symfony 2中创建在模板中使用的方法的位置

时间:2015-08-15 11:31:09

标签: symfony doctrine-orm twig dql

在我的模板中,我想调用一个函数来显示公司中员工的总数。员工与部门,部门相关的部门与一对多关系有关。

{% for com in company %}
    {{ com.name }}
    {{ com.description }}
    {{ com.getNumberOfEmp|length }} //this a function must display counts of employee
{% endfor %}

在控制器中

$em = $this->getDoctrine()->getManager();

    $company = $em->getRepository('Bundle:Company')->findAll();

我应该在哪里放置getNumberOfEmp方法?

在Symfony 1.4中,我很容易通过将getNumberOfEmp放在将调用company.table.class的company.class中来实现这一点

另一个问题是,如何正确使用Doctrine或DQL来查询多个Join? 我试过这个功能,但我不知道这是不是正确的方法

companyrepository.php

public function getNumberOfEmp()
{
return $this
      ->createQueryBuilder()
      ->select('e.firstname')
      ->from('Emp e')
      ->leftJoin('e.Department d')
      ->leftJoin('d.Company c')
      ->where('i.id =:$id)  
      ->setParameter('id',$this->id)// I am confused about this since i want to display all names of the company
      ->getQuery()
      ->getResult() 
    ;
 }

在Symfony 1.4中,我以这种方式使用它

//company.class.php

public function getNumberOfEmp()
{
    $emp = Doctrine_Core::getTable('Company')->createQuery('c')
    ->select('v.firstname')
            ->from('Employeers e')
            ->leftJoin('e.Department d')
            ->leftJoin('d.Company c')
            ->where('c.id=?',$this->id);
            return $emp->execute();
    }

在php模板中轻松调用它

<?php foreach ($company as $com): ?>
   <?php echo $com->name ?>/display name of company
   <?php echo $com->description ?>//description
   <?php echo count($com.getNumberOfEmp) ?>//dispalys number of employees
<?php endforeach ?>

任何想法?

1 个答案:

答案 0 :(得分:3)

只需创建一个枝条扩展,并与参数一起使用;类似的东西:

扩展类:

$this->output->set_header('Content-Type: text/html; charset=utf-8');

在service.yml中定义您的扩展并注入实体管理器:

<?php

namespace WHERE\YOU_WANT\TO\CREATE_IT;

class TestExtension extends \Twig_Extension
{
 protected $em;

 public function __construct($em)
 {
    $this->em = $em;
 }

 public function getFunctions()
 {
    return array(
       //this is the name of the function you will use in twig
        new \Twig_SimpleFunction('number_employees', array($this, 'a'))
    );
}

public function getName()
{
    return 'nbr_employees';
}   

public function a($id)
{
    $qb=$this->em->createQueryBuilder();
    $qb->select('count(n.id)')
       ->from('XYZYOurBundle:Employee','n')
       ->where('n.company = :x)
       ->setParameter('x',$id);
    $count = $qb->getQuery()->getSingleScalarResult(); 

    return $count;

}

}

最后你可以在你的模板中使用它,如:

    numberemployees:
        class: THE\EXTENSION\NAMESPACE\TestExtension
        tags:
            - { name: twig.extension }
        arguments:
            em: "@doctrine.orm.entity_manager"