laravel - Eloquent returns error on saving a username/password -

laravel - Eloquent returns error on saving a username/password -

in db, admin creates business relationship user, doesn't fill in username/password. 1 time row has been created, user email asks them register.

in store() of registercontroller, after perform validation, have following:

// here $user received via authorization code , email $user->username = $input['username']; $user->password = $input['password']; if ($user->save()) $data; homecoming 'could not save';

however, gives me error saying trying property of non-object. realize need hash password, have built on model , automatically hash password attribute inside.

any ideas?

laravel laravel-4 eloquent