如何在Symfony2中设置选择字段值 - How to set choice field values in Symfony2?

How to set choice field values in Symfony2?

本文关键字：选择字段设置 Symfony2 | 更新日期: 2023-09-27

将键/值对集合（从MySQL获得）设置为控制器内的选项字段"选项"的最佳方法是什么？我想到了类似的东西：

 $form = $this->createForm(new AddNews(), $news);
 $newsList = $this->getDoctrine()
             ->getRepository('BakaMainBundle:News')->getAllNews();
 $titlesList = ...($newsList); // some fuction that extract title=>id 
                               // array from news object collection
 $form->get('newsList')->setData($titlesList);

AddNews（）表单如下所示：

public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add(...)
            ->add(...)
            ->add('accept' , 'submit')
            ->add('newsList', 'choice', array
            (
                'mapped' => false,
                'required' => true
            ));
    }

也许如下（假设Symfony>=2.7）。有关字段选项，请参阅文档：

public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add(...)
            ->add(...)
            ->add('accept' , 'submit')
            ->add('newsList', 'entity', array
            (
                'class' => ''BakaMainBundle:News'',
                'choice_label' => 'title',
                'mapped' => false,
                'required' => true
            ));
    }

您可以使用存储库直接从formType文件中获取"新闻"，如下所示：

    private function getNews(){    
    $newsList = $this->getDoctrine()
                 ->getRepository('BakaMainBundle:News')->getAllNews();
     $titlesList = ...($newsList); // some fuction that extract title=>id 
                                   // array from news object collection
    }
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add(...)
            ->add(...)
            ->add('accept' , 'submit')
            ->add('newsList', 'choice', array
            (
                'mapped' => false,
                'required' => true,
                'choices' => $this->getNews()
            ));
    }