scrum-poker-internal/app/Http/Requests/SubmitVoteRequest.php

<?php

namespace App\Http\Requests;

use App\Models\Room;
use Illuminate\Contracts\Validation\ValidationRule;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Validation\Rule;

class SubmitVoteRequest extends FormRequest
{
    /**
     * Determine if the user is authorized to make this request.
     */
    public function authorize(): bool
    {
        return true;
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array<string, ValidationRule|array<mixed>|string>
     */
    public function rules(): array
    {
        $room = $this->route('room');

        if (! $room instanceof Room) {
            return ['value' => ['prohibited']];
        }

        return [
            'value' => ['bail', 'required', 'string', Rule::in(array_column($room->deck_config['cards'], 'key'))],
        ];
    }

    public function messages(): array
    {
        return [
            'value.required' => 'Du musst eine Karte auswählen.',
            'value.in' => 'Diese Karte gehört nicht zum verwendeten Deck.',
        ];
    }
}