laravel blade variable isset, empty or optional
// laravel optional parameter
{{ $variable ?? 'empty or write some message' }}
{{ $data ?? ' ' }}
// laravel variable is set or not
@isset($variable)
// do some stuff when varaibale have value
@endisset
// laravel varaible empty or not
@empty ($variable)
// do some stuff when varaibale have empty value
@endempty