function linked_field_element_validate_destination in Linked Field 8

Form element validation handler for destination field in settings form.

Parameters

array $element: The structured array whose children shall be rendered.

\Drupal\Core\Form\FormStateInterface $form_state: The form state.

1 string reference to 'linked_field_element_validate_destination'

linked_field_field_formatter_third_party_settings_form in ./linked_field.module

Implements hook_field_formatter_third_party_settings_form().

File

./linked_field.module, line 451

Main file of Linked Field module.

Code

function linked_field_element_validate_destination(array $element, FormStateInterface &$form_state) {
  $fields = $form_state
    ->getValue('fields');

  // We check whether 'fields' exists in the form_state values.
  if ($fields) {
    $field_name = $element['#array_parents'][1];
    $settings = $fields[$field_name]['settings_edit_form']['third_party_settings']['linked_field'];
    $linked = $settings['linked'];
    $type = $settings['type'];
    $destination = $settings['destination'][$type];

    // If this field should be linked, the destination field is required.
    if ($linked) {
      if (!$destination) {
        $form_state
          ->setErrorByName($element[$type], t('!name field is required.', [
          '!name' => $element[$type]['#title'],
        ]));
      }
      else {
        $field =& $fields[$field_name]['settings_edit_form']['third_party_settings']['linked_field'];
        $field['destination'] = $field['destination'][$type];
        if ($type == 'custom') {
          $destination = $field['destination'];

          // Prevent validating URL with tokens.
          if (strpos($destination, '[') === FALSE || strpos($destination, ']') === FALSE) {
            try {
              Url::fromUri($destination);
            } catch (\Exception $e) {
              $form_state
                ->setError($element, t('Destination is invalid.'));
              return;
            }
          }
        }
        $form_state
          ->setValue('fields', $fields);
      }
    }
  }
}