autocde2.0/app/Http/Requests/CustomFieldRuleHelper.php

<?php

namespace App\Http\Requests;

use App\Models\CustomField;
use App\Models\Enums\CustomFieldType;
use Illuminate\Validation\Rule;

trait CustomFieldRuleHelper
{
    protected function customFieldRuleByGroup(string $group, array $keys = []): array
    {
        $customFields = CustomField::query()
            ->where("group", $group)
            ->when(count($keys) > 0, function ($query) use ($keys) {
                return $query->whereIn("key", $keys);
            })
            ->get();

        $rules = [];
        foreach ($customFields as $customField) {
            $rule = $this->customFieldToRule($customField);
            if (! $rule) {
                continue;
            }

            $rules[$customField->key]= $rule;
        }

        return $rules;
    }

    protected function customFieldToRule(CustomField $customField): array
    {
        $rule = [];
        if ($customField->required  == 1) {
            $rule[] = "required";
        }

        $typeRule = match (CustomFieldType::tryFrom($customField->type)) {
            CustomFieldType::TEXT => "string",
            CustomFieldType::TEXTAREA => "string",
            CustomFieldType::SELECT => $customField->options ? Rule::in(array_column($customField->options, "value")) : "",
            CustomFieldType::NUMBER => "numeric",
            default => ""
        };

        if ($typeRule) {
            $rule[] = $typeRule;
        }

        return $rule;
    }
}