function _taxonomy_access_field_validate in Taxonomy Access Control 7

Validates form submissions of taxonomy fields for create grants.

@todo Use field label and term names in errors rather than field name and tids.

See also

http://drupal.org/node/1220212

entity_form_field_validate()

Related topics

1 call to _taxonomy_access_field_validate()

taxonomy_access_field_attach_validate in ./taxonomy_access.module

Implements hook_field_attach_validate().

File

./taxonomy_access.create.inc, line 614

Implements the Add Tag (create) grant on editing forms.

Code

function _taxonomy_access_field_validate($entity_type, $entity, &$errors) {

  // Check for a pre-existing entity (i.e., the entity is being updated).
  $old_fields = FALSE;

  // The entity is actually a "pseudo-entity," and the user profile form
  // neglects to include the uid. So, we need to load it manually.
  if ($entity_type == 'user') {

    // Some modules which extend the user profile form cause additional
    // validation to happen with "pseudo-entities" that do not include the
    // name. So, check if it exists.
    if (isset($entity->name)) {
      if ($account = user_load_by_name($entity->name)) {
        $entity->uid = $account->uid;
      }
    }
  }
  list($entity_id, , $bundle) = entity_extract_ids($entity_type, $entity);
  if ($entity_id) {

    // Load the entity.
    $old_entity = entity_load($entity_type, array(
      $entity_id,
    ));
    $old_entity = $old_entity[$entity_id];

    // Fetch the original entity's taxonomy fields.
    $old_fields = _taxonomy_access_entity_fields($entity_type, $old_entity, $bundle);
  }

  // Fetch the updated entity's taxonomy fields.
  $new_fields = _taxonomy_access_entity_fields($entity_type, $entity, $bundle);

  // Set errors if there are any disallowed changes.
  $changes = _taxonomy_access_compare_fields($new_fields, $old_fields);

  // We care about the overall value list, so delta is not important.
  $delta = 0;

  // Check each field and langcode for disallowed changes.
  foreach ($changes as $field_name => $langcodes) {
    foreach ($langcodes as $langcode => $disallowed) {
      if ($disallowed) {
        if (!empty($disallowed['added'])) {
          $text = 'You may not add the following tags to %field: %tids';
          $errors[$field_name][$langcode][$delta][] = array(
            'error' => 'taxonomy_access_disallowed_added',
            'message' => t($text, array(
              '%field' => $field_name,
              '%tids' => implode(', ', $disallowed['added']),
            )),
          );
        }
        if (!empty($disallowed['removed'])) {
          $text = 'You may not remove the following tags from %field: %tids';
          $errors[$field_name][$langcode][$delta][] = array(
            'error' => 'taxonomy_access_disallowed_removed',
            'message' => t($text, array(
              '%field' => $field_name,
              '%tids' => implode(', ', $disallowed['removed']),
            )),
          );
        }
      }
    }
  }
}