What Is An Old Input In Laravel Framework with Example

Laravel allows you to keep input from one request during the next request. This feature is particularly useful for re-populating forms after detecting validation errors. However, if you are using Laravel's included validation features, it is unlikely you will need to manually use these methods, as some of Laravel's built-in validation facilities will call them automatically.

Flashing Input To The Session

The flash method on the Illuminate\Http\Request class will flash the current input to the session so that it is available during the user's next request to the application:
 

$request->flash();

$request->flashOnly(['username', 'email']);

$request->flashExcept('password');

Flashing Input Then Redirecting
 

Since you often will want to flash input to the session and then redirect to the previous page, you may easily chain input flashing onto a redirect using the withInput method:

return redirect('form')->withInput();

return redirect('form')->withInput(
$request->except('password')
);

Retrieving Old Input

To retrieve flashed input from the previous request, use the old method on the Request instance. The old method will pull the previously flashed input data from the session:

$username = $request->old('username');

<input type="text" name="username" value="{{ old('username') }}">

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