public static function Radio::preRenderRadio in Drupal 8
Same name and namespace in other branches
- 9 core/lib/Drupal/Core/Render/Element/Radio.php \Drupal\Core\Render\Element\Radio::preRenderRadio()
- 10 core/lib/Drupal/Core/Render/Element/Radio.php \Drupal\Core\Render\Element\Radio::preRenderRadio()
Prepares a #type 'radio' render element for input.html.twig.
Parameters
array $element: An associative array containing the properties of the element. Properties used: #required, #return_value, #value, #attributes, #title, #description. The #name property will be sanitized before output. This is currently done by initializing Drupal\Core\Template\Attribute with all the attributes.
Return value
array The $element with prepared variables ready for input.html.twig.
File
- core/
lib/ Drupal/ Core/ Render/ Element/ Radio.php, line 53
Class
- Radio
- Provides a form element for a single radio button.
Namespace
Drupal\Core\Render\ElementCode
public static function preRenderRadio($element) {
$element['#attributes']['type'] = 'radio';
Element::setAttributes($element, [
'id',
'name',
'#return_value' => 'value',
]);
// To avoid auto-casting during '==' we convert $element['#value'] and
// $element['#return_value'] to strings. It will prevent wrong true-checking
// for both cases: 0 == 'string' and 'string' == 0, this will occur because
// all numeric array values will be integers and all submitted values will
// be strings. Array values are never valid for radios and are skipped. To
// account for FALSE and empty string values in the #return_value, we will
// consider any #value that evaluates to empty to be the same as any
// #return_value that evaluates to empty.
if (isset($element['#return_value']) && $element['#value'] !== FALSE && !is_array($element['#value']) && (empty($element['#value']) && empty($element['#return_value']) || (string) $element['#value'] === (string) $element['#return_value'])) {
$element['#attributes']['checked'] = 'checked';
}
static::setAttributes($element, [
'form-radio',
]);
return $element;
}