function field_reference_autocomplete_validate in Field reference 7

Validation callback for a field_reference autocomplete element.

1 string reference to 'field_reference_autocomplete_validate'

field_reference_field_widget_form in ./field_reference.module

Implements hook_field_widget_form().

File

./field_reference.module, line 528

Defines a field type for referencing a field from another.

Code

function field_reference_autocomplete_validate($element, &$form_state, $form) {
  $field_key = NULL;
  if (!empty($element['#value'])) {

    // Check whether we have a field id.
    preg_match('/.*?\\[(.*?)\\]/is', $element['#value'], $matches);
    if (!empty($matches[1])) {

      // Field id passed through.
      $field_key = $matches[1];
    }
    else {
      $instance = field_widget_instance($element, $form_state);
      form_error($element, t('%name: field reference key not supplied in autocomplete value, please select an autocomplete suggestion.', array(
        '%name' => $instance['label'],
      )));
    }
  }

  // Set the element's value as the field key.
  form_set_value($element, $field_key, $form_state);
}