我试图为我的条令实体定义生成输入表单。
为了为数组字段生成一个输入字段，并且与特定实体字段的类型无关，我需要能够获得数组应该的长度。
根据文档中的信息，我似乎无法做到这一点（在sql中存储为序列化字符串）。是否可以添加长度约束的定义，我可以通过返回 [classMetaData]->fieldMappings['fieldName'] ?

<?php

declare(strict_types=1);

namespace WebApp\Views;

abstract class ProductView implements IProductView
{
    /**
     * This property must be initialised for each concrete instance of this base class
     * @var ProductController
     */
    protected ProductController $controller;

    protected array $formTypeMappings = [
        "string" => "type='text'",
        "integer" => "type='number' step='1'",
        "float" => "type='number' step='0.01'"
    ];

    public function displayForm(): string
    {
        $formHeader = "<form action='TODO' method='#'>";
        $formFields = "";
        $formFooter = "</form>";
        foreach (array_values($this->controller->getFieldMap()) as $fieldConfig) {
            var_dump($fieldConfig);
            $formFields .= $this->makeFormField($fieldConfig);
        }
        return $formHeader . $formFields . $formFooter;
    }

    protected function makeFormField(array $fieldConfig)
    {
        if ($fieldConfig['type'] === "array") {
            $fieldValue =
            for($i = 0; $i < count())
        }
        $inputName = $fieldConfig['fieldName'] . "Input";
        return "<div class='form-group'>
                    <label for='$inputName'>{$fieldConfig['fieldName']}</label>
                    <input {$this->formTypeMappings[$fieldConfig]} class='form-control id=$inputName>
                </div>";
    }
}

所需实体定义

<?php

declare(strict_types=1);

namespace WebApp\Models;

/**
 * @Entity
 *
 */
class Furniture extends Product
{

    /**
     * @column(type="array")
     *
     * @var array
     */
    protected $dimensions;

    /**
     * Hard-coded product type declaration to ensure correct mapping for single-table inheritance
     * @column(type='string')
     *
     * @var string
     */
    public const PRODUCT_TYPE = 'furniture';

    public function __construct(string $name, float $price, array $dimensions)
    {
        parent::__construct($name, $price);

        //sanity check on dimensions argument
        if (count($dimensions) !== 3) {
            throw new \LengthException('\'$dimensions\' array passed to ' . __CLASS__
                . '\'s constructor is ' . count($dimensions) . ' items not 3.');
        }
        $this->dimensions = $dimensions;
    }

    public function getDimensions(): array
    {
        return $this->dimensions;
    }
}

n、 b:这是mysql数据库连接
是否可以通过扩展 ArrayType 定义