Pagekit\User\Controller\ResetPasswordController::requestAction PHP Method

    public function requestAction($email)
    {
        try {
            if (App::user()->isAuthenticated()) {
                return App::redirect();
            }
            if (!App::csrf()->validate()) {
                throw new Exception(__('Invalid token. Please try again.'));
            }
            if (empty($email)) {
                throw new Exception(__('Enter a valid email address.'));
            }
            if (!($user = User::findByEmail($email))) {
                throw new Exception(__('Unknown email address.'));
            }
            if ($user->isBlocked()) {
                throw new Exception(__('Your account has not been activated or is blocked.'));
            }
            $user->activation = App::get('auth.random')->generateString(32);
            $url = App::url('@user/resetpassword/confirm', ['user' => $user->username, 'key' => $user->activation], 0);
            try {
                $mail = App::mailer()->create();
                $mail->setTo($user->email)->setSubject(__('Reset password for %site%.', ['%site%' => App::module('system/site')->config('title')]))->setBody(App::view('system/user:mails/reset.php', compact('user', 'url', 'mail')), 'text/html')->send();
            } catch (\Exception $e) {
                throw new Exception(__('Unable to send confirmation link.'));
            }
            $user->save();
            App::message()->success(__('Check your email for the confirmation link.'));
            return App::redirect('@user/login');
        } catch (Exception $e) {
            return ['$view' => ['title' => __('Reset'), 'name' => 'system/user/reset-request.php'], 'error' => $e->getMessage()];
        }
    }