Zend3表单过滤器-ParamConverter无法生成有效的表单

时间:2018-11-20 13:59:27

标签: php zend-framework zend-form zend-framework3

我真的对我的表单过滤器感到困惑。

我的测试项目包含2个模型。

class Category extends AbstractEntity 
{
    use Nameable; // just property name and getter and setter

    /**
     * @var boolean
     * @ORM\Column(name="issue", type="boolean")
     */
    private $issue;

    /**
     * @var Collection|ArrayCollection|Entry[]
     *
     * @ORM\OneToMany(targetEntity="CashJournal\Model\Entry", mappedBy="category", fetch="EAGER", orphanRemoval=true, cascade={"persist", "remove"})
     */
    private $entries;
}

条目

class Entry extends AbstractEntity
{
    use Nameable;

    /**
     * @var null|float
     *
     * @ORM\Column(name="amount", type="decimal")
     */
    private $amount;

    /**
     * @var null|Category
     *
     * @ORM\ManyToOne(targetEntity="CashJournal\Model\Category", inversedBy="entries", fetch="EAGER")
     * @ORM\JoinColumn(name="category_id", referencedColumnName="id", nullable=false)
     */
    protected $category;

    /**
     * @var null|DateTime
     *
     * @ORM\Column(name="date_of_entry", type="datetime")
     */
    private $dateOfEntry;
}

如果有人需要AbstractEntity

abstract class AbstractEntity implements EntityInterface
{
    /**
     * @var int
     * @ORM\Id
     * @ORM\Column(name="id", type="integer")
     * @ORM\GeneratedValue(strategy="IDENTITY")
     */
    protected $id;
}

每个类别可以有许多条目。我正在为此关系使用Doctrine。而且效果很好。

我有一个基于此FieldSet的表单:

$this->add([
    'name' => 'id',
    'type' => Hidden::class
]);

$this->add([
    'name' => 'name',
    'type' => Text::class,
    'options' => [
        'label' => 'Name'
    ]
]);

$this->add([
    'name' => 'amount',
    'type' => Number::class,
    'options' => [
        'label' => 'Summe'
    ]
]);

$this->add([
    'name' => 'date_of_entry',
    'type' => Date::class,
    'options' => [
        'label' => 'Datum'
    ]
]);

$this->add([
    'name' => 'category',
    'type' => ObjectSelect::class,
    'options' => [
        'target_class' => Category::class,
    ]
]);

因此,我的表单显示一个带有我的类别的下拉列表。是的,很好。

要为我的输入实体加载类别,我使用过滤器。

$this->add([
    'name' => 'category',
    'required' => true,
    'filters' => [
        [
            'name' => Callback::class,
            'options' => [
                'callback' => [$this, 'loadCategory']
            ]
        ]
    ]
]);

和回调:

public function loadCategory(string $categoryId)
{
    return $this->mapper->find($categoryId);
}

映射器可以很好地加载类别。大。但是该表格无效,因为:

  

CashJournal \ Model \ Category类的对象无法转换为int

好,所以我要删除过滤器,但是现在它无法将属性设置为条目实体,因为设置器需要Category。表单错误显示:

  

输入的步骤无效

在Symfony中,我可以创建一个ParamConverter,它将category_id转换为有效的Category实体。

问题 我如何使用过滤器作为我的ParamConver?

更新 同样,当我将category_id转换为int时,也会从表单中得到错误。

更新2 我将FieldSet更改为:

class EntryFieldSet extends Fieldset implements ObjectManagerAwareInterface
{
    use ObjectManagerTrait;

    /**
     * {@inheritDoc}
     */
    public function init()
    {
        $this->add([
            'name' => 'id',
            'type' => Hidden::class
        ]);

        $this->add([
            'name' => 'name',
            'type' => Text::class,
            'options' => [
                'label' => 'Name'
            ]
        ]);

        $this->add([
            'name' => 'amount',
            'type' => Number::class,
            'options' => [
                'label' => 'Summe'
            ]
        ]);

        $this->add([
            'name' => 'date_of_entry',
            'type' => Date::class,
            'options' => [
                'label' => 'Datum'
            ]
        ]);

        $this->add([
            'name' => 'category',
            'required' => false,
            'type' => ObjectSelect::class,
            'options' => [
                'target_class' => Category::class,
                'object_manager' => $this->getObjectManager(),
                'property'       => 'id',
                'display_empty_item' => true,
                'empty_item_label'   => '---',
                'label_generator' => function ($targetEntity) {
                    return $targetEntity->getName();
                },
            ]
        ]);

        parent::init();
    }
} 

但是这将因错误消息而退出:

  

Entry :: setDateOfEntry()必须是DateTime的实例,已给出字符串

1 个答案:

答案 0 :(得分:1)

您是否检查过ObjectSelect的文档?您似乎缺少一些选择,即要使用哪个水化器(EntityManager)和标识属性(id)。 Have a look here

示例:

$this->add([
    'type'    => ObjectSelect::class,
    'name'    => 'category',                           // Name of property, 'category' in your question
    'options' => [
        'object_manager' => $this->getObjectManager(), // Make sure you provided the EntityManager to this Fieldset/Form
        'target_class'   => Category::class,           // Entity to target
        'property'       => 'id',                      // Identifying property
    ],
]);

要验证所选元素,请添加您的InputFilter:

$this->add([
    'name'     => 'category',
    'required' => true,
]);

InputFilter不再需要。类别已经存在,因此已经经过验证。因此,您应该可以选择它。

仅在有特殊要求时才需要其他过滤器/验证器,例如:“类别只能在条目中使用一次”,因此,您需要使用NoObjectExists验证器。但这似乎并非如此。


基于评论和过去的问题的更新

我认为您正在使要做的事情复杂化很多。似乎您只想在客户端加载表单之前先填充它即可。在收到来自客户端的POST后,您希望将收到的数据放入表单中,对其进行验证并存储。正确?

基于此,请找到我在一个项目中拥有的User的完整控制器。希望对您有所帮助。提供它是因为更新正偏离您的原始问题,这可能会对您有所帮助。

我已经删除了一些其他的检查和错误抛出,但是在其他方面却是完整的工作方式。

(请注意,我使用的是我自己的抽象控制器,请确保将其替换为您自己的和/或重新创建并匹配要求)

我还在此代码中附加了注释,以帮助您

<?php

namespace User\Controller\User;

use Doctrine\Common\Persistence\ObjectManager;
use Doctrine\ORM\ORMException;
use Exception;
use Keet\Mvc\Controller\AbstractDoctrineActionController;
use User\Entity\User;
use User\Form\UserForm;
use Zend\Http\Request;
use Zend\Http\Response;

class EditController extends AbstractDoctrineActionController
{
    /**
     * @var UserForm
     */
    protected $userEditForm; // Provide this

    public function __construct(ObjectManager $objectManager, UserForm $userEditForm)
    {
        parent::__construct($objectManager); // Require this in this class or your own abstract class

        $this->setUserEditForm($userEditForm);
    }

    /**
     * @return array|Response
     * @throws ORMException|Exception
     */
    public function editAction()
    {
        $id = $this->params()->fromRoute('id', null);
        // check if id set -> else error/redirect

        /** @var User $entity */
        $entity = $this->getObjectManager()->getRepository(User::class)->find($id);
        // check if entity -> else error/redirect


        /** @var UserForm $form */
        $form = $this->getUserEditForm();  // GET THE FORM
        $form->bind($entity);              // Bind the Entity (object) on the Form

        // Only go into the belof if() on POST, else return Form. Above the data is set on the Form, so good to go (pre-filled with existing data)

        /** @var Request $request */
        $request = $this->getRequest();
        if ($request->isPost()) {
            $form->setData($request->getPost());       // Set received POST data on Form

            if ($form->isValid()) {                    // Validates Form. This also updates the Entity (object) with the received POST data
                /** @var User $user */
                $user = $form->getObject();            // Gets updated Entity (User object)

                $this->getObjectManager()->persist($user); // Persist it

                try {
                    $this->getObjectManager()->flush();    // Store in DB
                } catch (Exception $e) {

                    throw new Exception('Could not save. Error was thrown, details: ', $e->getMessage());
                }

                return $this->redirectToRoute('users/view', ['id' => $user->getId()]);
            }
        }

        // Returns the Form with bound Entity (object). 
        // Print magically in view with `<?= $this->form($form) ?>` (prints whole Form!!!)

        return [
            'form' => $form,
        ];
    }

    /**
     * @return UserForm
     */
    public function getUserEditForm() : UserForm
    {
        return $this->userEditForm;
    }

    /**
     * @param UserForm $userEditForm
     *
     * @return EditController
     */
    public function setUserEditForm(UserForm $userEditForm) : EditController
    {
        $this->userEditForm = $userEditForm;

        return $this;
    }
}

希望有帮助...