public static function boot()
{
parent::boot();
Main::$app->connection->validator->extend('imageExists', function ($attribute, $value, $parameters, $validator) {
$validator->setCustomMessages([$attribute => 'Image already exists']);
list($scene, $server, $id) = $parameters;
$image = Image::where([$attribute => $value, 'scene' => $scene, 'server' => $server]);
if ($id) {
$image = $image->where('id', '!=', $id);
}
return $image->count() === 0;
});
}
