dropbox1111 2018-04-25 16:42
浏览 88
已采纳

Symfony 3.4表单中的CollectionType数组

I've got the array Cart of the entities, and I want to generate general form, which looks like on the screen.

enter image description here

As you see, I want to have editable field Quantity in each row, which represents the Cart entity, and I want to have ability to update all of them at once.

class Cart
{
/**
 * @ORM\Id
 * @ORM\Column(type="integer")
 * @ORM\GeneratedValue(strategy="AUTO")
 */
private $id;

/**
 * @ORM\ManyToOne(targetEntity="User", inversedBy="carts")
 */
private $userId;

/**
 * @ORM\ManyToOne(targetEntity="Product", inversedBy="carts")
 */
protected $product;

/**
 * @ORM\Column(type="integer")
 */
private $quantity;

/*gettes & setters */
}

For now, I have form, which wants to receive CollectionType, to work on it, but - I have only an array of entities, so It's dumping LogicalException.

What I need to do - there is any way to parse array to CollectionType, or maybe I could take group of cart entities from database in another way than that?:

$carts=$this->getDoctrine()->getRepository(Cart::class)->findByUserId($user);
  • 写回答

1条回答 默认 最新

  • dqgg25493 2018-04-25 18:00
    关注

    There is an example of how to do what you're looking to achieve in the Symfony Documentation on How to Embed a Collection of Forms.

    For your specific use case, you will want to create a UserCartsForm and a Separate CartsForm.

    In your UserCart add the carts field as a CollectionType. Symfony will then process the field as a series of forms.

    src/AppBundle/Form/UserCart.php

    namespace AppBundle\Form;
    
    use Symfony\Component\Form\AbstractType;
    use Symfony\Component\Form\Extension\Core\Type as FormType;
    
    class UserCartsForm extends AbstractType
    {
        public function buildForm(FormBuilderInterface $builder, array $options)
        {
             $builder->add('carts', FormType\CollectionType::class, [
                 'label' => false,
                 'entry_type' => CartsForm::class,
                 'entry_options' => array('label' => false),
             ]);
        }
    
        public function configureOptions(OptionsResolver $resolver)
        {
            $resolver->setDefaults([
                'data_class' => User::class,
            ]);
        }
    }
    

    Add the fields you want editable on your form to the CartsForm

    src/AppBundle/Form/CartsForm.php

    namespace AppBundle\Form;
    
    use Symfony\Component\Form\AbstractType;
    use Symfony\Component\Form\Extension\Core\Type as FormType;
    
    class CartsForm extends AbstractType
    {
        public function buildForm(FormBuilderInterface $builder, array $options)
        {
             $builder->add('quantity', FormType\IntegerType::class, [
               'label' => false
                //...
             ]);
             //...
        }
    
        public function configureOptions(OptionsResolver $resolver)
        {
            $resolver->setDefaults([
                'data_class' => Cart::class,
            ]);
        }
    }
    

    In your controller, reference the user entity as your UserCartsForm data.

    src/AppBundle/Controller/DefaultController.php

    namespace AppBundle\Controller;
    
    use AppBundle\Form\UserCartsForm;
    
    class DefaultController extends Controller
    {
    
       /**
        * @Route('/{id}/user-carts')
        */
       public function userCartsAction(Request $request, User $user)
       {
          $form = $this->createForm(UserCartsForm::class, $user);
          $form->handleRequest($request);
          if($form->isSubmitted() && $form->isValid())
          {
             //... process entity
             //$this->getDoctrine()->getManager()->flush($carts);
             return $this->redirectToRoute('some_route');
          }
    
          return $this->render('user_carts_form.html.twig', [
              'form' => $form
          ]);
       }
    }
    

    Then you should be able to easily retrieve the data from your twig template to render as you would like.

    app/Resources/views/user_carts_form.html.twig

    {% form_start(form) %}
       <table>
       <thead>
       <tr>
           <td>Name</td>
           <td>Quantity</td>
           <td></td>
       </tr>
       </thead>
       <tbody>
       {% for cart in form.carts %}
       {% set cartEntity = cart.vars.data %}
       <tr>
           <td>{{ cartEntity.product.name }}</td>
           <td>{{ form_widget(cart.quantity) }}</td>
           <td><a class="button" href="{{ path('remove_cart_action', { id: cartEntity.id }) }}">Delete <icon/></a></td>
       <tr>
       {% endfor %}
       </tbody>
       </table>
       <button type="submit">Submit</button>
    {% form_end(form) %}
    

    Update for Entity Constraints

    By default Symfony will use all constraints (Default) assigned to the entity when validating your form causing $form->isValid() to return false.

    https://symfony.com/doc/3.4/validation/groups.html

    If no groups are specified, all constraints that belong to the group Default will be applied.

    To resolve the issue, use Validation Groups to separate the entity constraints and declare the desired groups on their respective form(s).

    Example:

    src/AppBundle/Entity/User.php

    namespace AppBundle\Entity;
    
    use Symfony\Component\Validator\Constraints as Assert;
    
    /**
     * @ORM\Entity
     */
    class User
    {
    
        /**
         * @Assert\NotBlank(groups={"registration"})
         */
        private $username;
    
        //...
    }
    

    Then to use your validation group(s) on the desired form, in this case RegistrationForm, you declare the desired group in the AbstractTye::configureOptions as one of the OptionsResolver:$defaults.

    src/AppBundle/Form/RegistrationForm.php

    namespace AppBundle\Form;
    
    use Symfony\Component\Form\AbstractType;
    
    class RegistrationForm extends AbstractType
    {
        //...
    
         public function configureOptions(OptionsResolver $resolver)
         {
             $resolver->setDefaults([
                 'data_class' => User::class,
                 'validation_groups' => ['registration']
             ]);
         }
    
    }
    

    Now the User::NotBlank constraint will only apply for the RegistrationForm::isValid() or any other form that declare the registration validation group.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论

报告相同问题?

悬赏问题

  • ¥15 TLS1.2协议通信解密
  • ¥40 图书信息管理系统程序编写
  • ¥20 Qcustomplot缩小曲线形状问题
  • ¥15 企业资源规划ERP沙盘模拟
  • ¥15 树莓派控制机械臂传输命令报错,显示摄像头不存在
  • ¥15 前端echarts坐标轴问题
  • ¥15 ad5933的I2C
  • ¥15 请问RTX4060的笔记本电脑可以训练yolov5模型吗?
  • ¥15 数学建模求思路及代码
  • ¥50 silvaco GaN HEMT有栅极场板的击穿电压仿真问题