Backend\Core\Engine\Form::addEditor PHP Method

    public function addEditor($name, $value = null, $class = null, $classError = null, $HTML = true)
    {
        $name = (string) $name;
        $value = $value !== null ? (string) $value : null;
        $class = 'inputEditor ' . (string) $class;
        $classError = 'inputEditorError ' . (string) $classError;
        $HTML = (bool) $HTML;
        // we add JS because we need CKEditor
        $this->header->addJS('ckeditor/ckeditor.js', 'Core', false);
        $this->header->addJS('ckeditor/adapters/jquery.js', 'Core', false);
        $this->header->addJS('ckfinder/ckfinder.js', 'Core', false);
        // add the internal link lists-file
        if (is_file(FRONTEND_CACHE_PATH . '/Navigation/editor_link_list_' . BackendLanguage::getWorkingLanguage() . '.js')) {
            $timestamp = @filemtime(FRONTEND_CACHE_PATH . '/Navigation/editor_link_list_' . BackendLanguage::getWorkingLanguage() . '.js');
            $this->header->addJS('/src/Frontend/Cache/Navigation/editor_link_list_' . BackendLanguage::getWorkingLanguage() . '.js?m=' . $timestamp, null, false, true, false);
        }
        // create and return a textarea for the editor
        return $this->addTextarea($name, $value, $class, $classError, $HTML);
    }

 /**
  * Validate the forms
  */
 private function validateForm()
 {
     if ($this->frm->isSubmitted()) {
         $txtEmail = $this->frm->getField('backend_email');
         $txtPassword = $this->frm->getField('backend_password');
         // required fields
         if (!$txtEmail->isFilled() || !$txtPassword->isFilled()) {
             // add error
             $this->frm->addError('fields required');
             // show error
             $this->tpl->assign('hasError', true);
         }
         $this->getContainer()->get('logger')->info("Trying to authenticate user '{$txtEmail->getValue()}'.");
         // invalid form-token?
         if ($this->frm->getToken() != $this->frm->getField('form_token')->getValue()) {
             // set a correct header, so bots understand they can't mess with us.
             if (!headers_sent()) {
                 header('400 Bad Request', true, 400);
             }
         }
         // get the user's id
         $userId = BackendUsersModel::getIdByEmail($txtEmail->getValue());
         // all fields are ok?
         if ($txtEmail->isFilled() && $txtPassword->isFilled() && $this->frm->getToken() == $this->frm->getField('form_token')->getValue()) {
             // try to login the user
             if (!BackendAuthentication::loginUser($txtEmail->getValue(), $txtPassword->getValue())) {
                 $this->getContainer()->get('logger')->info("Failed authenticating user '{$txtEmail->getValue()}'.");
                 // add error
                 $this->frm->addError('invalid login');
                 // store attempt in session
                 $current = \SpoonSession::exists('backend_login_attempts') ? (int) \SpoonSession::get('backend_login_attempts') : 0;
                 // increment and store
                 \SpoonSession::set('backend_login_attempts', ++$current);
                 // save the failed login attempt in the user's settings
                 if ($userId !== false) {
                     BackendUsersModel::setSetting($userId, 'last_failed_login_attempt', time());
                 }
                 // show error
                 $this->tpl->assign('hasError', true);
             }
         }
         // check sessions
         if (\SpoonSession::exists('backend_login_attempts') && (int) \SpoonSession::get('backend_login_attempts') >= 5) {
             // get previous attempt
             $previousAttempt = \SpoonSession::exists('backend_last_attempt') ? \SpoonSession::get('backend_last_attempt') : time();
             // calculate timeout
             $timeout = 5 * (\SpoonSession::get('backend_login_attempts') - 4);
             // too soon!
             if (time() < $previousAttempt + $timeout) {
                 // sleep until the user can login again
                 sleep($timeout);
                 // set a correct header, so bots understand they can't mess with us.
                 if (!headers_sent()) {
                     header('503 Service Unavailable', true, 503);
                 }
             } else {
                 // increment and store
                 \SpoonSession::set('backend_last_attempt', time());
             }
             // too many attempts
             $this->frm->addEditor('too many attempts');
             $this->getContainer()->get('logger')->info("Too many login attempts for user '{$txtEmail->getValue()}'.");
             // show error
             $this->tpl->assign('hasTooManyAttemps', true);
             $this->tpl->assign('hasError', false);
         }
         // no errors in the form?
         if ($this->frm->isCorrect()) {
             // cleanup sessions
             \SpoonSession::delete('backend_login_attempts');
             \SpoonSession::delete('backend_last_attempt');
             // save the login timestamp in the user's settings
             $lastLogin = BackendUsersModel::getSetting($userId, 'current_login');
             BackendUsersModel::setSetting($userId, 'current_login', time());
             if ($lastLogin) {
                 BackendUsersModel::setSetting($userId, 'last_login', $lastLogin);
             }
             $this->getContainer()->get('logger')->info("Successfully authenticated user '{$txtEmail->getValue()}'.");
             // redirect to the correct URL (URL the user was looking for or fallback)
             $this->redirectToAllowedModuleAndAction();
         }
     }
     // is the form submitted
     if ($this->frmForgotPassword->isSubmitted()) {
         // backend email
         $email = $this->frmForgotPassword->getField('backend_email_forgot')->getValue();
         // required fields
         if ($this->frmForgotPassword->getField('backend_email_forgot')->isEmail(BL::err('EmailIsInvalid'))) {
             // check if there is a user with the given emailaddress
             if (!BackendUsersModel::existsEmail($email)) {
                 $this->frmForgotPassword->getField('backend_email_forgot')->addError(BL::err('EmailIsUnknown'));
             }
         }
         // no errors in the form?
         if ($this->frmForgotPassword->isCorrect()) {
             // generate the key for the reset link and fetch the user ID for this email
             $key = BackendAuthentication::getEncryptedString($email, uniqid());
             // insert the key and the timestamp into the user settings
             $userId = BackendUsersModel::getIdByEmail($email);
             $user = new User($userId);
             $user->setSetting('reset_password_key', $key);
             $user->setSetting('reset_password_timestamp', time());
             // variables to parse in the e-mail
             $variables['resetLink'] = SITE_URL . BackendModel::createURLForAction('ResetPassword') . '&email=' . $email . '&key=' . $key;
             // send e-mail to user
             $from = $this->get('fork.settings')->get('Core', 'mailer_from');
             $replyTo = $this->get('fork.settings')->get('Core', 'mailer_reply_to');
             $message = \Common\Mailer\Message::newInstance(\SpoonFilter::ucfirst(BL::msg('ResetYourPasswordMailSubject')))->setFrom(array($from['email'] => $from['name']))->setTo(array($email))->setReplyTo(array($replyTo['email'] => $replyTo['name']))->parseHtml(BACKEND_MODULES_PATH . '/Authentication/Layout/Templates/Mails/ResetPassword.tpl', $variables);
             $this->get('mailer')->send($message);
             // clear post-values
             $_POST['backend_email_forgot'] = '';
             // show success message
             $this->tpl->assign('isForgotPasswordSuccess', true);
             // show form
             $this->tpl->assign('showForm', true);
         } else {
             // errors?
             $this->tpl->assign('showForm', true);
         }
     }
 }