laravel-5

HTTP Requests 153
Flashing Input To The Session
The flash method on the Illuminate\Http\Request instance will flash the current input to the
session so that it is available during the user’s next request to the application:
1 $request->flash();
You may also use the flashOnly and flashExcept methods to flash a sub-set of the request data
into the session:
1 $request->flashOnly(['username', 'email']);
2
3 $request->flashExcept('password');
Flash Input Into Session Then Redirect
Since you often will want to flash input in association with a redirect to the previous page, you may
easily chain input flashing onto a redirect using the withInput method:
1 return redirect('form')->withInput();
2
3 return redirect('form')->withInput($request->except('password'));
Retrieving Old Data
To retrieve flashed input from the previous request, use the old method on the Request instance.
The old method provides a convenient helper for pulling the flashed input data out of the session:
1 $username = $request->old('username');
Laravel also provides a global old helper function. If you are displaying old input within a Blade
template, it is more convenient to use the old helper. If no old input exists for the given string, null
will be returned: