PHP FormStateInterface::setErrorByName方法代碼示例

 /**
  * Form element validation handler for 'name' in form_test_validate_form().
  */
 public function validateName(&$element, FormStateInterface $form_state)
 {
     $triggered = FALSE;
     if ($form_state->getValue('name') == 'element_validate') {
         // Alter the form element.
         $element['#value'] = '#value changed by #element_validate';
         // Alter the submitted value in $form_state.
         $form_state->setValueForElement($element, 'value changed by setValueForElement() in #element_validate');
         $triggered = TRUE;
     }
     if ($form_state->getValue('name') == 'element_validate_access') {
         $form_state->set('form_test_name', $form_state->getValue('name'));
         // Alter the form element.
         $element['#access'] = FALSE;
         $triggered = TRUE;
     } elseif ($form_state->has('form_test_name')) {
         // To simplify this test, just take over the element's value into $form_state.
         $form_state->setValueForElement($element, $form_state->get('form_test_name'));
         $triggered = TRUE;
     }
     if ($triggered) {
         // Output the element's value from $form_state.
         drupal_set_message(t('@label value: @value', array('@label' => $element['#title'], '@value' => $form_state->getValue('name'))));
         // Trigger a form validation error to see our changes.
         $form_state->setErrorByName('');
     }
 }

 public function validateForm(array &$form, FormStateInterface $form_state)
 {
     $cors_domains = $form_state->getValue('cors_domains', '');
     if (empty($cors_domains) && $cors_domains != $form['cors_domains']['#default_value']) {
         $form_state->setErrorByName('cors_domains', t('No domains provided.'));
         return;
     }
     $domains = explode("\r\n", $cors_domains);
     $settings = array();
     $errors = null;
     foreach ($domains as $domain) {
         if (empty($domain)) {
             continue;
         }
         $domain = explode("|", $domain, 2);
         if (empty($domain[0]) || empty($domain[1])) {
             $form_state->setErrorByName('cors_domains', t('Contains malformed entry.'));
             $errors = true;
         } else {
             $settings[$domain[0]] = isset($settings[$domain[0]]) ? $settings[$domain[0]] . ' ' : '';
             $settings[$domain[0]] .= trim($domain[1]);
         }
     }
     if ($settings && !$errors) {
         $form_state->setValue('settings', $settings);
     }
 }

 /**
  * Implements \Drupal\Core\Form\FormInterface::validateForm().
  */
 public function validateForm(array &$form, FormStateInterface $form_state)
 {
     $error = array();
     $sf_library = preg_replace("/(^[\r\n]*|[\r\n]+)[\\s\t]*[\r\n]+/", "\n", trim($form_state->getValue('superfish_library')));
     if (empty($sf_library)) {
         $form_state->setErrorByName('superfish_library', t('Path to Superfish library field cannot be empty. Please try this list:') . str_replace("\r\n", ",", $this->superfish_library_path()));
     } else {
         // Trimming blank lines and such
         $sf_library = explode("\n", $sf_library);
         // Crystal clear
         foreach ($sf_library as $s) {
             if (!file_exists($s)) {
                 $error[] = $s;
             }
         }
         if (!empty($error)) {
             $error_message = '';
             if (count($error) > 1) {
                 foreach ($error as $e) {
                     $error_message .= '<li>' . $e . '</li>';
                 }
                 $error_message = t('Files not found') . ': <ul>' . $error_message . '</ul>';
             } else {
                 $error_message = t('File not found') . ': ' . $error[0];
             }
             $form_state->setErrorByName('superfish_library', $error_message);
         }
     }
     parent::validateForm($form, $form_state);
 }

 /**
  * Implements \Drupal\Core\Form\FormInterface::validateForm().
  */
 public function validateForm(array &$form, FormStateInterface $form_state)
 {
     $form_state->set('notify_emails', []);
     if (!$form_state->isValueEmpty('update_notify_emails')) {
         $valid = array();
         $invalid = array();
         foreach (explode("\n", trim($form_state->getValue('update_notify_emails'))) as $email) {
             $email = trim($email);
             if (!empty($email)) {
                 if (valid_email_address($email)) {
                     $valid[] = $email;
                 } else {
                     $invalid[] = $email;
                 }
             }
         }
         if (empty($invalid)) {
             $form_state->set('notify_emails', $valid);
         } elseif (count($invalid) == 1) {
             $form_state->setErrorByName('update_notify_emails', $this->t('%email is not a valid email address.', array('%email' => reset($invalid))));
         } else {
             $form_state->setErrorByName('update_notify_emails', $this->t('%emails are not valid email addresses.', array('%emails' => implode(', ', $invalid))));
         }
     }
     parent::validateForm($form, $form_state);
 }

 /**
  * {@inheritdoc}
  */
 public function validateForm(array &$form, FormStateInterface $form_state)
 {
     $file_upload = $this->getRequest()->files->get('files[import_tarball]', NULL, TRUE);
     $has_upload = FALSE;
     if ($file_upload && $file_upload->isValid()) {
         // The sync directory must be empty if we are doing an upload.
         $form_state->setValue('import_tarball', $file_upload->getRealPath());
         $has_upload = TRUE;
     }
     $sync_directory = $form_state->getValue('sync_directory');
     // If we've customised the sync directory ensure its good to go.
     if ($sync_directory != config_get_config_directory(CONFIG_SYNC_DIRECTORY)) {
         // Ensure it exists and is writeable.
         if (!file_prepare_directory($sync_directory, FILE_CREATE_DIRECTORY | FILE_MODIFY_PERMISSIONS)) {
             $form_state->setErrorByName('sync_directory', t('The directory %directory could not be created or could not be made writable. To proceed with the installation, either create the directory and modify its permissions manually or ensure that the installer has the permissions to create it automatically. For more information, see the <a href="@handbook_url">online handbook</a>.', array('%directory' => $sync_directory, '@handbook_url' => 'http://drupal.org/server-permissions')));
         }
     }
     // If no tarball ensure we have files.
     if (!$form_state->hasAnyErrors() && !$has_upload) {
         $sync = new FileStorage($sync_directory);
         if (count($sync->listAll()) === 0) {
             $form_state->setErrorByName('sync_directory', t('No file upload provided and the sync directory is empty'));
         }
     }
 }

 public function validateForm(array &$form, FormStateInterface $form_state)
 {
     if ($form_state->getValue('cosign_allow_anons_on_https') == 0 && $form_state->getValue('cosign_allow_cosign_anons') == 1) {
         $form_state->setErrorByName('cosign_allow_anons_on_https', $this->t("Cosign users cannot browse anonymously if Anonymous users can't. Set Allow Anonymous Users to browse over https to Yes. OR"));
         $form_state->setErrorByName('cosign_allow_cosign_anons', $this->t("Cosign users cannot browse anonymously if Anonymous users can't. Set Allow Cosign Users to browse anonymously to No."));
     }
 }

 public function validateForm(array &$form, FormStateInterface $form_state)
 {
     if (strlen($form_state->getValue('title')) < 3) {
         $form_state->setErrorByName('title', $this->t('Your name is too short.'));
     }
     if (!UrlHelper::isValid($form_state->getValue('video'), TRUE)) {
         $form_state->setErrorByName('video', $this->t("The video url '%url' is invalid.", array('%url' => $form_state->getValue('video'))));
     }
 }

 /**
  * {@inheritdoc}
  */
 public function validateForm(array &$form, FormStateInterface $form_state)
 {
     if (strlen($form_state->getValue('title')) == '') {
         $form_state->setErrorByName('title', $this->t('Please enter title.'));
     }
     if (strlen($form_state->getValue('details')) == '') {
         $form_state->setErrorByName('details', $this->t('Please enter details.'));
     }
 }

 /**
  * {@inheritdoc}
  */
 public function validateForm(array &$form, FormStateInterface $form_state)
 {
     if (!preg_match('/^\\d+$/', $form_state->getValue('nodejs_uid'))) {
         $form_state->setErrorByName('nodejs_uid', t('Invalid uid - please enter a numeric uid.'));
     }
     if (!preg_match('/^([a-z0-9_]+)$/i', $form_state->getValue('nodejs_channel'))) {
         $form_state->setErrorByName('nodejs_channel', t('Invalid channel name - only numbers, letters and underscores are allowed.'));
     }
 }

 /**
  * {@inheritdoc}
  */
 public function validateForm(array &$form, FormStateInterface $form_state)
 {
     if (strlen($form_state->getValue('nc_username')) < 3) {
         $form_state->setErrorByName('nc_username', $this->t('The Username is too short you should select a longer one'));
     }
     if (strlen($form_state->getValue('nc_api_key')) < 3) {
         $form_state->setErrorByName('nc_api_key', $this->t('The API Key is too short you should select a longer one'));
     }
 }

 public function validateForm(array &$form, FormStateInterface $form_state)
 {
     if ($form_state->getValue('intranet_petitions_expired_days') <= 0) {
         $form_state->setErrorByName('intranet_petitions_expired_days', $this->t('Number of days should be > 0.'));
     }
     if ($form_state->getValue('intranet_petitions_likes_level') <= 0) {
         $form_state->setErrorByName('intranet_petitions_likes_level', $this->t('Number of likes level should be > 0.'));
     }
 }

 /**
  * {@inheritdoc}
  */
 public function validateForm(array &$form, FormStateInterface $form_state)
 {
     require_once drupal_get_path('module', 'uc_icepay') . '/api/ParameterValidation.php';
     if (!\Icepay_ParameterValidation::merchantID($form_state->getValue('uc_icepay_merchant_id'))) {
         $form_state->setErrorByName('uc_icepay_merchant_id', t('You have specified an invalid Icepay Merchant ID.'));
     }
     if (!\Icepay_ParameterValidation::secretCode($form_state->getValue('uc_icepay_secret_code'))) {
         $form_state->setErrorByName('uc_icepay_secret_code', t('You have specified an invalid Icepay Secret Code.'));
     }
 }

 /**
  * Validates the language editing element.
  */
 public function validateCommon(array $form, FormStateInterface $form_state)
 {
     // Ensure sane field values for langcode and name.
     if (!isset($form['langcode_view']) && !preg_match('@^[a-zA-Z]{1,8}(-[a-zA-Z0-9]{1,8})*$@', $form_state->getValue('langcode'))) {
         $form_state->setErrorByName('langcode', $this->t('%field must be a valid language tag as <a href=":url">defined by the W3C</a>.', array('%field' => $form['langcode']['#title'], ':url' => 'http://www.w3.org/International/articles/language-tags/')));
     }
     if ($form_state->getValue('label') != Html::escape($form_state->getValue('label'))) {
         $form_state->setErrorByName('label', $this->t('%field cannot contain any markup.', array('%field' => $form['label']['#title'])));
     }
 }

 /**
  * {@inheritdoc}
  */
 public function validateForm(array &$form, FormStateInterface $form_state)
 {
     $id = strtolower(trim($form_state->getValue('id')));
     if (strpos($id, ' ') !== FALSE || $id == 'all') {
         $form_state->setErrorByName('id', $this->t('You have entered an invalid status ID.'));
     }
     if (OrderStatus::load($id)) {
         $form_state->setErrorByName('id', $this->t('This ID is already in use.  Please specify a unique ID.'));
     }
 }

 /**
  * Validates the language editing element.
  */
 public function validateCommon(array $form, FormStateInterface $form_state)
 {
     // Ensure sane field values for langcode and name.
     if (!isset($form['langcode_view']) && preg_match('@[^a-zA-Z_-]@', $form_state->getValue('langcode'))) {
         $form_state->setErrorByName('langcode', $this->t('%field may only contain characters a-z, underscores, or hyphens.', array('%field' => $form['langcode']['#title'])));
     }
     if ($form_state->getValue('label') != String::checkPlain($form_state->getValue('label'))) {
         $form_state->setErrorByName('label', $this->t('%field cannot contain any markup.', array('%field' => $form['label']['#title'])));
     }
 }