jcergolj/laravellte

use Exception;

class MissingModel extends Exception
{
    public function __construct()
    {
        parent::__construct('Model is missing.');
    }
}

use App\Exceptions\MissingModel;
use App\Models\User;
use App\Providers\AppServiceProvider;

class ForRouteGate
{
    //
    public function forOwner($user, $permissionName, $model)
    {
        if ($model === null) {
            throw new MissingModel();
        }

        $ownerField = AppServiceProvider::OWNER_FIELD;

        if ($model->$ownerField === null) {
            return $user->hasPermission($permissionName);
        }

        return $user->isModelOwner($permissionName, $model);
    }
}