Doctrine2 / PostgreSQL - 具有可空关系的选择错误

Question

在我的 ZF2 应用程序中，我有 2 个 Doctrine2 实体：Product 和 Partner

因为在某些情况下产品不需要合作伙伴，所以产品和合作伙伴之间存在可为空的 ManyToOne 关系。

如果在表单（下拉列表）中提供了合作伙伴，它就会起作用。但如果不是，我有这个错误：

An exception occurred while executing 'SELECT t0.id AS id1, t0.title AS title2 FROM partners t0 WHERE t0.id = ?' with params [""]:

SQLSTATE[22P02]: Invalid text representation: 7 ERROR:  invalid input syntax for integer: ""`

实体：

/**
 * @ORM\Entity
 * @ORM\Table(name="products")
 */
class Product extends AbstractEntity
{
    /* ... */

    /**
     * @ORM\ManyToOne(targetEntity="Partner", inversedBy="products", cascade={"persist", "merge"})
     * @ORM\JoinColumn(name="partner_id", referencedColumnName="id", nullable=true)
     */
    protected $partner;

    /* ... */

    /**
     * @return Partner
     */
    public function getPartner()
    {
        return $this->partner;
    }

    /**
     * @param Partner $partner
     *
     * @return $this
     */
    public function setPartner(Partner $partner)
    {
        $this->partner = $partner;

        return $this;
    }

    /* ... */
}



/**
 * @ORM\Entity
 * @ORM\Table(name="partners")
 */
class Partner extends AbstractEntity
{
    /* ... */

    /**
     * @ORM\OneToMany(targetEntity="Product", mappedBy="partner", cascade={"persist", "merge", "remove"})
     **/
    protected $products;

    /* ... */

    public function __construct()
    {
        $this->products = new ArrayCollection();
    }

    /* ... */

    /**
     * @param Product $product
     *
     * @return $this
     */
    public function addProduct(Product $product)
    {
        $this->products[] = $product;
        $product->setPartner($this);

        return $this;
    }

    /**
     * @param $products
     *
     * @return $this
     */
    public function addProducts($products)
    {
        foreach ($products as $product)
        {
            $this->addProduct($product);
        }

        return $this;
    }

    /**
     * @param null $products
     *
     * @return $this
     */
    public function removeProducts($products = null)
    {
        if (!$products)
        {
            $products = $this->getProducts();
        }

        foreach ($products as $product)
        {
            if (is_object($product))
            {
                $this->products->removeElement($product);
            }
            else $this->products->remove($product);
        }

        return $this;
    }

    /**
     * @return mixed
     */
    public function getProducts()
    {
        return $this->products;
    }

    /**
     * @param mixed $products
     *
     * @return $this
     */
    public function setProducts($products)
    {
        $this->products = $products;

        return $this;
    }

    /* ... */
}

如有任何帮助，我们将不胜感激。

Answer 1

您需要允许将 null 值传递给 setPartner 方法

public function setPartner(Partner $partner = null)
{
    $this->partner = $partner;

    return $this;
}

此外，根据您的 form hydrator，您需要确保如果没有选择合作伙伴，则应将空值转换为 null。

Answer 2

感谢@hkulekci 的回答

我刚刚更新了我的输入过滤器：

public function getInputFilterSpecification()
{
    return [
        'partner' => ['required' => true],
        /* ... */
    ];
}

至于：

public function getInputFilterSpecification()
{
    return [
        'partner' => [
            'required' => true,
            'continue_if_empty' => true,
            'filters' => [
                ['name' => 'Null']
            ]
        ],
        /* ... */
    ];
}

Doctrine2 / PostgreSQL - 具有可空关系的选择错误

Doctrine2 / PostgreSQL - Selection error with a nullable relation

php

postgresql

doctrine-orm

zend-framework2