Symfony2嵌入式表单(Symfony2 Embedded Forms)

 我试图理解symfony2中的嵌入表单。 
 
 我有两个实体icon和asset它们之间存在多对多的关系，以及$icon->imageLarge和icon->imageThumb $icon->imageLarge上的OneToOne 。 
 
 注意:(资产是类名，但在图标内引用为$image... ） 
 
 我最终想要的是一个与图标相关的图像库和图标上的两列，以反映哪个图像是主缩略图和主要大图像...... 
 
 我创建了一个IconType： 
 
class IconType extends AbstractType{

public function buildForm(FormBuilderInterface $builder, array $options){
    $builder->add('name');
    $builder->add('imageThumb', new AssetType());
    $builder->add('imageLarge', new AssetType());
}

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


public function setDefaultOptions(OptionsResolverInterface $resolver){
    $resolver->setDefaults(array(
        'data_class' => 'SixString\PearBundle\Entity\Icon',
    ));
}
} 
 
 和一个AssetType： 
 
class AssetType extends AbstractType{

public function buildForm(FormBuilderInterface $builder, array $options){
    $builder->add('file');
}

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


public function setDefaultOptions(OptionsResolverInterface $resolver){
    $resolver->setDefaults(array(
            'data_class' => 'SixString\PearBundle\Entity\Asset',
        ));
}
}
 
 我在我的控制器中创建我的表单： 
 
$icon = new Icon;
$form = $this->createForm(new IconType(), $icon);

if($request->isMethod('POST')) {
    $form->bind($request);
    if ($form->isValid()) {
      ....
    }
}
return $this->render('SixStringPearBundle:Icon:form.html.twig', array("form" => $form->createView()));
 
 到目前为止，所有内容似乎都在进行交互，我在模板中创建了我的表单，它显示了图标名称字段以及两个资产文件上传者。 
 
 我迷路的地方是如何访问上传的assets 。 我需要将这两个assets持久保存到db，然后设置$icon->addImage($asset1); $icon->addImage($asset2); $icon->addImage($asset1); $icon->addImage($asset2); 对于多对多和$icon->setImageThumb($asset1); $icon->setImageLarge($asset2); $icon->setImageThumb($asset1); $icon->setImageLarge($asset2); 
 
 我不确定这一切是否有意义，但任何帮助搞清楚逻辑或只是如何访问这些资产将不胜感激！ 

I am trying to understand the embeded forms in symfony2. 
 
I have two entities icon and asset There is a many to many relationship between them as well as a OneToOne on $icon->imageLarge and icon->imageThumb. 
 
note: (Asset is the class name but referenced as $image... inside the icon) 
 
What I am trying to end up with is a gallery of images related to an icon and two columns on the icon to reflect which image is the main thumbnail and the main large image...
 
I have created an IconType:
 
class IconType extends AbstractType{

public function buildForm(FormBuilderInterface $builder, array $options){
    $builder->add('name');
    $builder->add('imageThumb', new AssetType());
    $builder->add('imageLarge', new AssetType());
}

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


public function setDefaultOptions(OptionsResolverInterface $resolver){
    $resolver->setDefaults(array(
        'data_class' => 'SixString\PearBundle\Entity\Icon',
    ));
}
} 
 
and an AssetType:
 
class AssetType extends AbstractType{

public function buildForm(FormBuilderInterface $builder, array $options){
    $builder->add('file');
}

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


public function setDefaultOptions(OptionsResolverInterface $resolver){
    $resolver->setDefaults(array(
            'data_class' => 'SixString\PearBundle\Entity\Asset',
        ));
}
}
 
I create my form in my controller:
 
$icon = new Icon;
$form = $this->createForm(new IconType(), $icon);

if($request->isMethod('POST')) {
    $form->bind($request);
    if ($form->isValid()) {
      ....
    }
}
return $this->render('SixStringPearBundle:Icon:form.html.twig', array("form" => $form->createView()));
 
Everything appears to be interacting so far, I have created my form in my template and it shows the icon name field as well as the two asset file uploaders.
 
Where I am getting lost is how to access the uploaded assets. I need to persist these two assets to db and then set $icon->addImage($asset1); $icon->addImage($asset2); for the many to many and also $icon->setImageThumb($asset1); $icon->setImageLarge($asset2);
 
I'm not sure if this all makes sense, but any help figuring out the logic or simply how to access these assets would be appreciated!

原文：https://stackoverflow.com/questions/16978991