function customfilter_filter_add_validate in Custom filter 7

Same name and namespace in other branches

1. 6 customfilter.admin.inc \customfilter_filter_add_validate()
2. 7.2 customfilter.module \customfilter_filter_add_validate()

Validate callback for the add filter form.

See also

customfilter_filter_add()

File

./customfilter.module, line 760

Allows the users with the right permission to define custom filters.

Code

function customfilter_filter_add_validate($form, &$form_state) {
  if (!empty($form_state['values']['type'])) {
    $type[] = trim($form_state['values']['type']);
    if (!preg_match('!^[a-z0-9_]+$!', $type[0])) {
      form_set_error('type', t('The machine-readable name must contain only lowercase letters, numbers, and underscores.'));
    }
    elseif (db_query("SELECT count(*) FROM {customfilter_filter} WHERE type = ':type'", array(
      ':type' => $type,
    ))
      ->fetchField()) {
      form_set_error('type', t('The machine-readable name must be unique.'));
    }
  }
}