function references_dialog_term_reference_autocomplete_validate in References dialog 7

Form element validate handler for taxonomy term autocomplete element.

1 string reference to 'references_dialog_term_reference_autocomplete_validate'

references_dialog_field_widget_form in ./references_dialog.module

Implements hook_field_widget_form().

File

./references_dialog.module, line 913

This the main module file.

Code

function references_dialog_term_reference_autocomplete_validate($element, &$form_state) {

  // Autocomplete widgets do not send their tids in the form, so we must detect
  // them here and process them independently.
  $value = NULL;
  if ($element['#value']) {
    $term = FALSE;
    $field = field_widget_field($element, $form_state);
    $instance = field_widget_instance($element, $form_state);

    // Check whether we have an explicit "[tid:n]" input.
    preg_match('/^(?:\\s*|(.*) )?\\[\\s*tid\\s*:\\s*(\\d+)\\s*\\]$/', $element['#value'], $matches);
    if (!empty($matches)) {

      // Explicit tid.
      list(, $term_name, $tid) = $matches;
      if (!empty($term_name)) {
        $term = taxonomy_term_load($tid);
      }
    }
    else {

      // Collect candidate vocabularies.
      $vocabularies = array();
      foreach ($field['settings']['allowed_values'] as $tree) {
        if ($vocabulary = taxonomy_vocabulary_machine_name_load($tree['vocabulary'])) {
          $vocabularies[$vocabulary->vid] = $vocabulary;
        }
      }
      if ($possibilities = taxonomy_term_load_multiple(array(), array(
        'name' => trim($element['#value']),
        'vid' => array_keys($vocabularies),
      ))) {
        $term = array_pop($possibilities);
      }
    }
    if ($term) {
      $value = $term->tid;
    }
    else {
      form_error($element, t('%name: found no valid post for this value.', array(
        '%name' => $instance['label'],
      )));
    }
  }
  form_set_value($element, $value, $form_state);
}