laravel - Error handling from external request class -

in login system i'm creating in laravel (version 5.2), registration request passed on registrationrequest class, contains validation logic this:

public function rules() {     return [         "username" => "required|min:3|unique:users",         "password" => "required|min:6|confirmed",         "email" => "required|confirmed|email|unique:users",     ]; } 

which passed on postregistration function:

public function postregistration(registrationrequest $request) {     $this->user->username = $request->input('username');     $this->user->mail = $request->input('email');     $this->user->password = password_hash($request->input('password'), password_default);     $this->user->save();      $this->auth->login($this->user);     return redirect('/dashboard'); } 

all kind of basic stuff, problem have have no idea how show error when username example 2 characters long.

i know normally, i'd

return redirect('/registration)->withinput()->witherrors(["errorhere" => "value"]);

but since validation rules external, have no clue how pass view.

i searched forums , docs, couldn't find clear on it.

is there way show these errors, preferably withinput() method?

thanks.

as can see docs laravel:

@if (count($errors) > 0)     <div class="alert alert-danger">         <ul>             @foreach ($errors->all() $error)                 <li>{{ $error }}</li>             @endforeach         </ul>     </div> @endif 

edit: didn't notice author answered question until refreshed page.