public static function createUser()
{
$params = $_POST;
$sign_up_form = new SignUpForm(array('first_name' => $params['first_name'], 'last_name' => $params['last_name'], 'email' => $params['email'], 'password' => $params['password'], 'password_confirmation' => $params['password_confirmation']));
if ($sign_up_form->validate()) {
$user = new User((array) $sign_up_form);
$user->save();
$_SESSION['user'] = $user->id;
Redirect::to('/units', array('message' => 'Welcome ' . $user->first_name . "!"));
} else {
$errors = array_values($sign_up_form->errors());
Redirect::to('/', array('errors' => $errors, 'input' => $params));
}
}
