Question

我需要使用“分组”元素创建XML文件，例如属性。
我有示例对象类：
产品

class Product
{
    private $name;
    private $attributes = [];

    // standard getter/setter for name

    public function getAttributes(): array
    {
        return $this->attributes;
    }

    public function setAttributes(ProductAttribute $attributes): void
    {
        $this->attributes[] = $attributes;
    }
}

和 ProductAttribute

class ProductAttribute
{
    private $name;
    private $value;

    // standard getters/setters
}

现在，我正在创建Product对象，并使用Symfony的序列化器对其进行序列化：

$product = new Product();
$product->setName('My product');

foreach ($arrayWithAttributes as $attr) {
    $attribute = new ProductAttribute();
    $attribute->setName = $attr['name'];
    $attribute->setValue = $attr['value'];

    $product->setAttributes($attribute);
}

$encoders = array(new XmlEncoder());
$normalizers = array(new ObjectNormalizer());

$serializer = new Serializer($normalizers, $encoders);
$serializer->serialize($product, 'xml');

我正在得到结果：

    <item key="0">
        <name>My product</name>
        <attributes>
            <name>Attribute Name #1</name>
            <value>Attribute Value #1</value>
        </attributes>
        <attributes>
            <name>Attribute Name #2</name>
            <value>Attribute Value #2</value>
        </attributes>
    </item>

但我期望：

    <item key="0">
        <name>My product</name>
        <attributes>
            <attribute>
                <name>Attribute Name #1</name>
                <value>Attribute Value #1</value>
            </attribute>
            <attribute>
                <name>Attribute Name #2</name>
                <value>Attribute Value #2</value>
            </attribute>
        </attributes>
    </item>

我怎么能得到这个？
我已经尝试过：

//Product.php
public function setAttributes(ProductAttribute $attributes)
{
    $this->attributes[]['attribute'] = $attributes;
}

但是我得到了：

    <item key="0">
        <name>My product</name>
        <attributes>
            <attribute>
                <name>Attribute Name #1</name>
                <value>Attribute Value #1</value>
            </attribute>
        </attributes>
        <attributes>
            <attribute>
                <name>Attribute Name #2</name>
                <value>Attribute Value #2</value>
            </attribute>
        </attributes>
    </item>

Answer 1

请尝试

$attrArray = [];

foreach ($arrayWithAttributes as $attr) {
    $attribute = new ProductAttribute();
    $attribute->setName = $attr['name'];
    $attribute->setValue = $attr['value'];
    $attrArray[] = $attribute;

}

 $product->setAttributes($attrArray);

然后在您的实体中

$this->attributes['attribute'] = $attributes;

Answer 2

好吧，我明白了-我必须为规范化器添加ArrayDenormalizer以支持嵌套树并更改Product $attributes属性设置器。最终看起来：

class Product
{
    private $name;
    private $attributes = [];

    // standard getter/setter for name

    public function getAttributes(): array
    {
        return $this->attributes;
    }

    public function setAttributes(ProductAttribute $attributes): void
    {
        $this->attributes['attribute'][] = $attributes;
    }
}

class ProductAttribute
{
    private $name;
    private $value;

    // standard getters/setters
}

use Symfony\Component\Serializer\Encoder\XmlEncoder;
use Symfony\Component\Serializer\Normalizer\ArrayDenormalizer;
use Symfony\Component\Serializer\Normalizer\ObjectNormalizer;
use Symfony\Component\Serializer\Serializer;

$product = new Product();
$product->setName('My product');

foreach ($arrayWithAttributes as $attr) {
    $attribute = new ProductAttribute();
    $attribute->setName = $attr['name'];
    $attribute->setValue = $attr['value'];

    $product->setAttributes($attribute);
}

$encoders = array(new XmlEncoder());
$normalizers = array(new ObjectNormalizer(), new ArrayDenormalizer());

$serializer = new Serializer($normalizers, $encoders);
$serializer->serialize($product, 'xml');

Symfony序列化器-如何对对象数组进行分组？

2 个答案: