<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class ProjektMerkmale extends Model
{
    protected $fillable = [
        'projekte_id',
        'code',
        'name',
    ];

    public static function getfreecode($projekte_id)
    {

        $possible = range('a', 'j');

        $have = static::getModel()::where('projekte_id', $projekte_id)->pluck('code')->toArray();

        $left = array_diff($possible, $have);

        return array_shift($left) ?? false;
    }
}