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| <?php | |
| /** | |
| * @file | |
| * Contains \Drupal\Core\Render\Element\Hidden. | |
| */ | |
| namespace Drupal\Core\Render\Element; | |
| use Drupal\Core\Render\Element; | |
| /** | |
| * Provides a form element for an HTML 'hidden' input element. | |
| * | |
| * Specify either #default_value or #value but not both. | |
| * | |
| * Properties: | |
| * - #default_value: The initial value of the form element. JavaScript may | |
| * alter the value prior to submission. | |
| * - #value: The value of the form element. The Form API ensures that this | |
| * value remains unchanged by the browser. | |
| * | |
| * Usage example: | |
| * @code | |
| * $form['entity_id'] = array('#type' => 'hidden', '#value' => $entity_id); | |
| * @endcode | |
| * | |
| * @see \Drupal\Core\Render\Element\Value | |
| * | |
| * @FormElement("hidden") | |
| */ | |
| class Hidden extends FormElement { | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function getInfo() { | |
| $class = get_class($this); | |
| return array( | |
| '#input' => TRUE, | |
| '#process' => array( | |
| array($class, 'processAjaxForm'), | |
| ), | |
| '#pre_render' => array( | |
| array($class, 'preRenderHidden'), | |
| ), | |
| '#theme' => 'input__hidden', | |
| ); | |
| } | |
| /** | |
| * Prepares a #type 'hidden' render element for input.html.twig. | |
| * | |
| * @param array $element | |
| * An associative array containing the properties of the element. | |
| * Properties used: #name, #value, #attributes. | |
| * | |
| * @return array | |
| * The $element with prepared variables ready for input.html.twig. | |
| */ | |
| public static function preRenderHidden($element) { | |
| $element['#attributes']['type'] = 'hidden'; | |
| Element::setAttributes($element, array('name', 'value')); | |
| return $element; | |
| } | |
| } |