admin-php-module/models/Staff.php

<?php

namespace App\Component\Models;

use Illuminate\Database\Eloquent\Model;

class Staff extends Model {
	protected $table = 'staffs';

    public static function getName($data) {
        $staff_name = Staff::where('code', intval($data))->where('is_history', 0)->first();
        if ($staff_name) {
            $staff_name = $staff_name['name'];
        } else {
            $staff_name = Staff::where('code', intval($data))->where('is_history', 1)->first();
            if ($staff_name) {
                $staff_name = $staff_name['name'];
            } else {
                $staff_name = 'Связанный персонал не найден';
            }
        }
        return $staff_name;
    }
}