function signaturefield_field in SignatureField 6

Implementation of hook_field().

File

modules/content.inc, line 117

Content module integration.

Code

function signaturefield_field($op, &$node, $field, &$items, $teaser, $page) {
  switch ($op) {

    // Do validation on the field values here. The widget
    // will do its own validation and you cannot make any
    // assumptions about what kind of widget has been used,
    // so don't validate widget values, only field values.
    case 'validate':
      if (is_array($items)) {
        foreach ($items as $delta => $item) {

          // The error_element is needed so that CCK can
          // set an error on the right sub-element when
          // fields are deeply nested in the form.
          $error_element = isset($item['_error_element']) ? $item['_error_element'] : '';
          if (is_array($item) && isset($item['_error_element'])) {
            unset($item['_error_element']);
          }
          if (!empty($item['value'])) {
            if (!empty($field['max_length']) && drupal_strlen($item['value']) > $field['max_length']) {
              form_set_error($error_element, t('%name: the value may not be longer than %max characters.', array(
                '%name' => $field['widget']['label'],
                '%max' => $field['max_length'],
              )));
            }
          }
        }
      }
      return $items;

    // This is where you make sure that user-provided
    // data is sanitized before being displayed.
    case 'sanitize':
      foreach ($items as $delta => $item) {
        $example = check_plain($item['value']);
        $items[$delta]['safe'] = $example;
      }
  }
}