class Radio
Same name and namespace in other branches
- 9 core/lib/Drupal/Core/Render/Element/Radio.php \Drupal\Core\Render\Element\Radio
- 8.9.x core/lib/Drupal/Core/Render/Element/Radio.php \Drupal\Core\Render\Element\Radio
- 10 core/lib/Drupal/Core/Render/Element/Radio.php \Drupal\Core\Render\Element\Radio
Provides a form element for a single radio button.
This is an internal element that is primarily used to render the radios form element. Refer to \Drupal\Core\Render\Element\Radios for more documentation.
Attributes
#[FormElement('radio')]
Hierarchy
- class \Drupal\Component\Plugin\PluginBase extends \Drupal\Component\Plugin\PluginInspectionInterface, \Drupal\Component\Plugin\DerivativeInspectionInterface
- class \Drupal\Core\Plugin\PluginBase uses \Drupal\Core\StringTranslation\StringTranslationTrait, \Drupal\Core\DependencyInjection\DependencySerializationTrait, \Drupal\Core\Messenger\MessengerTrait implements \Drupal\Component\Plugin\PluginBase
- class \Drupal\Core\Render\Element\RenderElementBase extends \Drupal\Core\Render\Element\ElementInterface, \Drupal\Core\Plugin\ContainerFactoryPluginInterface implements \Drupal\Core\Plugin\PluginBase
- class \Drupal\Core\Render\Element\FormElementBase extends \Drupal\Core\Render\Element\FormElementInterface implements \Drupal\Core\Render\Element\RenderElementBase
- class \Drupal\Core\Render\Element\Radio implements \Drupal\Core\Render\Element\FormElementBase
- class \Drupal\Core\Render\Element\FormElementBase extends \Drupal\Core\Render\Element\FormElementInterface implements \Drupal\Core\Render\Element\RenderElementBase
- class \Drupal\Core\Render\Element\RenderElementBase extends \Drupal\Core\Render\Element\ElementInterface, \Drupal\Core\Plugin\ContainerFactoryPluginInterface implements \Drupal\Core\Plugin\PluginBase
- class \Drupal\Core\Plugin\PluginBase uses \Drupal\Core\StringTranslation\StringTranslationTrait, \Drupal\Core\DependencyInjection\DependencySerializationTrait, \Drupal\Core\Messenger\MessengerTrait implements \Drupal\Component\Plugin\PluginBase
Expanded class hierarchy of Radio
See also
\Drupal\Core\Render\Element\Radios
\Drupal\Core\Render\Element\Checkbox
11 string references to 'Radio'
- claro_preprocess_input in core/
themes/ claro/ claro.theme - Implements template_preprocess_HOOK() for input.
- ContentTranslationHandler::addTranslatabilityClue in core/
modules/ content_translation/ src/ ContentTranslationHandler.php - Adds a clue about the form element translatability.
- DrupalSelenium2Driver::setValue in core/
tests/ Drupal/ FunctionalJavascriptTests/ DrupalSelenium2Driver.php - ElementTest::testOptions in core/
modules/ system/ tests/ src/ Functional/ Form/ ElementTest.php - Tests expansion of #options for #type checkboxes and radios.
- FilterEntityReferenceTest::testAddEntityReferenceFieldWithDefaultSelectionHandler in core/
modules/ views_ui/ tests/ src/ FunctionalJavascript/ FilterEntityReferenceTest.php - Tests end to end creation of a Content Entity Reference filter.
8 #type uses of Radio
- ArgumentPluginBase::processContainerRadios in core/
modules/ views/ src/ Plugin/ views/ argument/ ArgumentPluginBase.php - Custom form radios process function.
- FieldStorageAddForm::buildForm in core/
modules/ field_ui/ src/ Form/ FieldStorageAddForm.php - Form constructor.
- FormElementsRenderTest::testDrupalRenderFormElements in core/
modules/ system/ tests/ src/ Kernel/ Common/ FormElementsRenderTest.php - Tests rendering form elements without using doBuildForm().
- LanguageListBuilder::buildRow in core/
modules/ language/ src/ LanguageListBuilder.php - Builds a row for an entity in the entity listing.
- Radios::processRadios in core/
lib/ Drupal/ Core/ Render/ Element/ Radios.php - Expands a radios element into individual radio elements.
File
-
core/
lib/ Drupal/ Core/ Render/ Element/ Radio.php, line 17
Namespace
Drupal\Core\Render\ElementView source
class Radio extends FormElementBase {
/**
* {@inheritdoc}
*/
public function getInfo() {
return [
'#input' => TRUE,
'#default_value' => NULL,
'#process' => [
[
static::class,
'processAjaxForm',
],
],
'#pre_render' => [
[
static::class,
'preRenderRadio',
],
],
'#theme' => 'input__radio',
'#theme_wrappers' => [
'form_element',
],
'#title_display' => 'after',
];
}
/**
* Prepares a #type 'radio' render element for input.html.twig.
*
* @param 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 array
* The $element with prepared variables ready for input.html.twig.
*/
public static function preRenderRadio($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 $element;
}
}
Members
Title Sort descending | Deprecated | Modifiers | Object type | Summary | Overriden Title | Overrides |
---|---|---|---|---|---|---|
DependencySerializationTrait::$_entityStorages | protected | property | An array of entity type IDs keyed by the property name of their storages. | |||
DependencySerializationTrait::$_serviceIds | protected | property | An array of service IDs keyed by property name used for serialization. | |||
FormElementBase::processAutocomplete | public static | function | Adds autocomplete functionality to elements. | 1 | ||
FormElementBase::processPattern | public static | function | Render API callback: Handles the #pattern form element property. | 1 | ||
FormElementBase::validatePattern | public static | function | Render API callback: Handles the #pattern form element property.. | 1 | ||
FormElementBase::valueCallback | public static | function | Determines how user input is mapped to an element's #value property. | Overrides FormElementInterface::valueCallback | 17 | |
MessengerTrait::$messenger | protected | property | The messenger. | 25 | ||
MessengerTrait::messenger | public | function | Gets the messenger. | 25 | ||
MessengerTrait::setMessenger | public | function | Sets the messenger. | |||
PluginBase::$configuration | protected | property | Configuration information passed into the plugin. | 1 | ||
PluginBase::$pluginDefinition | protected | property | The plugin implementation definition. | 1 | ||
PluginBase::$pluginId | protected | property | The plugin ID. | |||
PluginBase::DERIVATIVE_SEPARATOR | constant | A string which is used to separate base plugin IDs from the derivative ID. | ||||
PluginBase::getBaseId | public | function | Gets the base_plugin_id of the plugin instance. | Overrides DerivativeInspectionInterface::getBaseId | ||
PluginBase::getDerivativeId | public | function | Gets the derivative_id of the plugin instance. | Overrides DerivativeInspectionInterface::getDerivativeId | ||
PluginBase::getPluginDefinition | public | function | Gets the definition of the plugin implementation. | Overrides PluginInspectionInterface::getPluginDefinition | 2 | |
PluginBase::getPluginId | public | function | Gets the plugin ID of the plugin instance. | Overrides PluginInspectionInterface::getPluginId | ||
PluginBase::isConfigurable | Deprecated | public | function | Determines if the plugin is configurable. | ||
Radio::getInfo | public | function | Returns the element properties for this element. | Overrides ElementInterface::getInfo | ||
Radio::preRenderRadio | public static | function | Prepares a #type 'radio' render element for input.html.twig. | |||
RenderElementBase::$renderParent | protected | property | The parent element. | |||
RenderElementBase::$renderParentName | protected | property | The parent key. | |||
RenderElementBase::$storage | protected | property | The storage. | |||
RenderElementBase::addChild | public | function | Adds a child render element. | Overrides ElementInterface::addChild | ||
RenderElementBase::changeType | public | function | Change the type of the element. | Overrides ElementInterface::changeType | ||
RenderElementBase::create | public static | function | Creates an instance of the plugin. | Overrides ContainerFactoryPluginInterface::create | 2 | |
RenderElementBase::createChild | public | function | Creates a render object and attaches it to the current render object. | Overrides ElementInterface::createChild | ||
RenderElementBase::elementInfoManager | protected | function | Returns the element info manager. | |||
RenderElementBase::getChild | public | function | Gets a child. | Overrides ElementInterface::getChild | ||
RenderElementBase::getChildren | public | function | Returns child elements. | Overrides ElementInterface::getChildren | ||
RenderElementBase::initializeInternalStorage | public | function | Initialize storage. | Overrides ElementInterface::initializeInternalStorage | ||
RenderElementBase::preRenderAjaxForm | public static | function | Adds Ajax information about an element to communicate with JavaScript. | 2 | ||
RenderElementBase::preRenderGroup | public static | function | Adds members of this group as actual elements for rendering. | 2 | ||
RenderElementBase::processAjaxForm | public static | function | Form element processing handler for the #ajax form property. | 3 | ||
RenderElementBase::processGroup | public static | function | Arranges elements into groups. | 2 | ||
RenderElementBase::removeChild | public | function | Removes a child. | Overrides ElementInterface::removeChild | ||
RenderElementBase::setAttributes | public static | function | Sets a form element's class attribute. | Overrides ElementInterface::setAttributes | 2 | |
RenderElementBase::setType | protected | function | Set type on initialize. | 1 | ||
RenderElementBase::toRenderable | public | function | Returns a render array. | Overrides ElementInterface::toRenderable | ||
RenderElementBase::__construct | public | function | Constructs a new render element object. | Overrides PluginBase::__construct | 6 | |
RenderElementBase::__get | public | function | Magic method: gets a property value. | |||
RenderElementBase::__isset | public | function | Magic method: checks if a property value is set. | |||
RenderElementBase::__set | public | function | Magic method: Sets a property value. | |||
RenderElementBase::__sleep | public | function | Overrides DependencySerializationTrait::__sleep | |||
RenderElementBase::__unset | public | function | Magic method: unsets a property value. | |||
RenderElementBase::__wakeup | public | function | Overrides DependencySerializationTrait::__wakeup | |||
StringTranslationTrait::$stringTranslation | protected | property | The string translation service. | 3 | ||
StringTranslationTrait::formatPlural | protected | function | Formats a string containing a count of items. | |||
StringTranslationTrait::getNumberOfPlurals | protected | function | Returns the number of plurals supported by a given language. | |||
StringTranslationTrait::getStringTranslation | protected | function | Gets the string translation service. | |||
StringTranslationTrait::setStringTranslation | public | function | Sets the string translation service to use. | 2 | ||
StringTranslationTrait::t | protected | function | Translates a string to the current language or to a given language. | 1 |
Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.