UserController.php

<?php 
public function store() {
    $this->_validate();
    User::create( request()->input() );
    return new JsonResponse( [ 'message' => 'success' ] );
}

protected function _validate() {
    $this->validate( request(), [
        'name'       => 'required|unique:users',
        'email'      => 'required',
    ] );
}