Make the entire Flash or specific key in it stick around for one more request.
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
| key | string | No | A key or list of keys to flag for keeping. This argument is also aliased as keys. |
// Keep the entire Flash for the next request
flashKeep();
// Keep the "error" key in the Flash for the next request
flashKeep("error");
// Keep both the "error" and "success" keys in the Flash for the next request
flashKeep("error,success");