function _title_validate_class in Title 7
Validate the list of values.
Validate that a space-separated list of values are lowercase and appropriate for use as HTML classes.
See also
title_field_formatter_settings_form()
1 string reference to '_title_validate_class'
- title_field_formatter_settings_form in ./
title.field.inc - Implements hook_field_formatter_settings_form().
File
- ./
title.field.inc, line 198 - Implement a title field formater.
Code
function _title_validate_class($element, &$form_state) {
static $validated_class = array();
$value = drupal_array_get_nested_value($form_state['values'], $element['#parents']);
$classes = explode(' ', $value);
foreach ($classes as $class) {
if (!isset($validated_class[$class])) {
// Using drupal_clean_css_identifier() directly to allow a double
// underscore in addition to core defaults.
// @see: https://www.drupal.org/node/2009584.
$validated_class[$class] = drupal_clean_css_identifier(drupal_strtolower($class), array(
' ' => '-',
'__' => '__',
'_' => '-',
'/' => '-',
'[' => '-',
']' => '',
));
}
if ($class !== $validated_class[$class]) {
form_error($element, t('Wrapper classes contain illegal characters; classes should be lowercase and may contain letters, numbers, dashes and double underscores.'));
return;
}
}
}