我是 Laravel 的初学者。我有这个代码：
class User extends Authenticatable implements MustVerifyEmail
{
use Notifiable;
use psCMS\Presenters\UserPresenter;
public static $roles = [];
public function roles()
{
return $this->belongsToMany('App\Role');
}
public function comments()
{
return $this->hasMany('App\Comments');
}
public function hasRole(array $roles)
{
foreach($roles as $role)
{
if(isset(self::$roles[$role]))
{
if(self::$roles[$role]) return true;
}
else
{
self::$roles[$role] = $this->roles()->where('name', $role)->exists();
if(self::$roles[$role]) return true;
}
}
return false;
}
}
class Role extends Model
{
protected $quarded = [];
public $timestamps = false;
public function users()
{
return $this->belongsToMany('App\User');
}
}