To reproduce this bug:
In a custom module:
- Implement hook theme registering a my_module_radios function.
- Create a form utilizing radios.
- Populate the options array of the radios
- Set the #theme value of the radios entry to use your custom theme function
- Copy the implementation of theme_radios out of core or here https://api.drupal.org/api/drupal/includes!form.inc/function/theme_radios/7
- Re-name it to so the name of the theme function matches what you defined in hook_theme and what you specified for #theme for the radios
- Dump the value of $element['#children'] and it will be empty
function my_module_theme($existing, $type, $theme, $path) {
return array(
'my_module_radios' => array(
'render element' => 'element',
),
'my_module_radio' => array(
'render element' => 'element',
)
);
}$form['colors'] = array(
'#type' => 'radios',
'#title' => t('blah blah'),
'#title_display' => 'attribute',
'#options' => $options,
'#default_value' => variable_get('colors_default', 0),
'#required' => TRUE,
'#theme' => 'my_module_radios',
);function theme_my_module_radios($variables) {
$element = $variables['element'];
$attributes = array();
if (isset($element['#id'])) {
$attributes['id'] = $element['#id'];
}
$attributes['class'] = 'form-radios';
if (!empty($element['#attributes']['class'])) {
$attributes['class'] .= '' . implode('', $element['#attributes']['class']);
}
if (isset($element['#attributes']['title'])) {
$attributes['title'] = $element['#attributes']['title'];
}
return '<div' . drupal_attributes($attributes) . '>' . (!empty($element['#children']) ? $element['#children'] : '') . '</div>';
}It appears other people have been experiencing a similar issue. I have found:
- https://drupal.org/node/1147888#comment-7539483
- https://drupal.org/node/497636
- https://drupal.org/node/1366922