baoshi-was/app/WorkOrderType.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

use App\Traits\ModelLogChanging;
use Illuminate\Database\Eloquent\Relations\HasMany;

class WorkOrderType extends Model
{
    use ModelLogChanging;

    // 工单 类型
    protected $fillable = ['name'];

    public function childTypes(): HasMany
    {
        return $this->hasMany(WorkOrderChildType::class);
    }
}