php - symfony 表单选择字段 : set choices option default data from external datasource

Question

如何使用外部数据数组填充选择选项？

$builder->add('gender', 'choice', array(
    'choices' => [array from webservice or other class]
));

文档仅显示简单的静态数组 http://symfony.com/fr/doc/2.7/reference/forms/types/choice.html#choices

我试过了:

Controller :

$event = new Event();
$form = $this->createForm(new EventType($this->get('api')), $event);

表格:

class EventType extends AbstractType
{
    protected $myservice;

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

    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('titre')
            ->add('id_rubrique', 'choice', array(
                'choices' => $this->myservice->getRubriques
        ;
    }

    ....
}

这是正确的解决方案吗？

Answer 1

将表单定义为服务:

services:
    my.form:
        class: EventType
        arguments:
            - @api

然后在 Controller 中:

$event = new Event();
$form = $this->createForm('my.form', $event);