通过Annotation Builder在Zend Framework 2表单中填充关系数据

目前,我有文章和标签表.我试图自动填充"标签"表单元素作为文章表单上的选择框.从数据库表中设置标签选择框的值选项的最佳方法是什么,然后让文章在"绑定"方法调用期间自动绑定标签数据？

Article.php

tags = new ArrayCollection();
    }

    public function getTags()
    {
        return $this->tags;
    }

    public function addTags($tags)
    {
        $this->tags = $tags;
    }

    public function removeTags()
    {
        $this->tags = new ArrayCollection();
    }
}

ArticleController.php

class ArticleController{
    public function editAction()
    {
        $builder = new AnnotationBuilder();
        $form = $builder->createForm(new TblArticle());

        $id = 1;
        $article = $em->find('Admin\Entity\TblArticle', $id);
        $form->bind($article);
    }
}

我做了什么

在内部ArticleController::editAction(),我已经将值选项动态添加到表单上的tags元素.

class ArticleController
{
    public function editAction()
    {
        $builder = new AnnotationBuilder();
        $form = $builder->createForm(new TblArticle());

        // add tag options to form
        $sm = $this->getServiceLocator();
        $em = $sm->get('Doctrine\ORM\EntityManager');
        $tags = $em->getRepository('Admin\Entity\LuTag')->findAll();
        $tagOptions = [null => ''];
        foreach ($tags as $tag) {
            $tagOptions[$tag->getTagId()] = $tag->getName();
        }
        $form->get('tags')->setValueOptions($tagOptions);
        // end add tag options to form


        $id = 1;
        $article = $em->find('Admin\Entity\TblArticle', $id);
        $form->bind($article);

        if ($article->getTags()) {
            $tagIds = array();
            foreach ($article->getTags() as $tag) {
                $tagIds[] = $tag->getTagId();
            }
            $form->get('tags')->setValue($tagIds);
        }
    }
}

这似乎是我控制器中的过多代码,我知道这不对,但我不确定如何更好地做到这一点.可能使用FormBuilder设置Tag元素的值选项？

谢谢.