baoshi-was/app/MailEvent.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

use App\Traits\LogModelChanging;

class MailEvent extends Model
{
    use LogModelChanging;

    protected $fillable = ['name', 'event_name', 'remark', 'is_active', 'template'];

    public function roles()
    {
        $this->belongsToMany(Role::class);
    }
}