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class Value in Drupal 8

Same name and namespace in other branches
  1. 9 core/lib/Drupal/Core/Render/Element/Value.php \Drupal\Core\Render\Element\Value
  2. 10 core/lib/Drupal/Core/Render/Element/Value.php \Drupal\Core\Render\Element\Value

Provides a form element for storage of internal information.

Unlike \Drupal\Core\Render\Element\Hidden, this information is not sent to the browser in a hidden form field, but only stored in the form array for use in validation and submit processing.

Properties:

  • #value: The value of the form element that cannot be edited by the user.

Usage Example:

$form['entity_id'] = array(
  '#type' => 'value',
  '#value' => $entity_id,
);

Plugin annotation

@FormElement("value");

Hierarchy

Expanded class hierarchy of Value

22 string references to 'Value'
BatchTestChainedForm::buildForm in core/modules/system/tests/modules/batch_test/src/Form/BatchTestChainedForm.php
Form constructor.
config_events_test.schema.yml in core/modules/config/tests/config_events_test/config/schema/config_events_test.schema.yml
core/modules/config/tests/config_events_test/config/schema/config_events_test.schema.yml
config_test.schema.yml in core/modules/config/tests/config_test/config/schema/config_test.schema.yml
core/modules/config/tests/config_test/config/schema/config_test.schema.yml
core.data_types.schema.yml in core/config/schema/core.data_types.schema.yml
core/config/schema/core.data_types.schema.yml
core.entity.schema.yml in core/config/schema/core.entity.schema.yml
core/config/schema/core.entity.schema.yml

... See full list

56 #type uses of Value
ActionFormBase::form in core/modules/action/src/Form/ActionFormBase.php
Gets the actual form array to be built.
BlockForm::form in core/modules/block/src/BlockForm.php
Gets the actual form array to be built.
BlockInterfaceTest::testBlockInterface in core/modules/block/tests/src/Kernel/BlockInterfaceTest.php
Test configuration and subsequent form() and build() method calls.
BlockPluginTrait::buildConfigurationForm in core/lib/Drupal/Core/Block/BlockPluginTrait.php
Creates a generic configuration form for all block types. Individual block plugins can add elements to this form by overriding BlockBase::blockForm(). Most block plugins should not override this method unless they need to alter the generic form elements.
BookAdminEditForm::bookAdminTable in core/modules/book/src/Form/BookAdminEditForm.php
Builds the table portion of the form for the book administration page.

... See full list

File

core/lib/Drupal/Core/Render/Element/Value.php, line 22

Namespace

Drupal\Core\Render\Element
View source
class Value extends FormElement {

  /**
   * {@inheritdoc}
   */
  public function getInfo() {
    return [
      '#input' => TRUE,
    ];
  }

}

Members

Namesort descending Modifiers Type Description 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.
DependencySerializationTrait::__sleep public function 1
DependencySerializationTrait::__wakeup public function 2
FormElement::processAutocomplete public static function Adds autocomplete functionality to elements.
FormElement::processPattern public static function #process callback for #pattern form element property.
FormElement::validatePattern public static function #element_validate callback for #pattern form element property.
FormElement::valueCallback public static function Determines how user input is mapped to an element's #value property. Overrides FormElementInterface::valueCallback 15
MessengerTrait::$messenger protected property The messenger. 29
MessengerTrait::messenger public function Gets the messenger. 29
MessengerTrait::setMessenger public function Sets the messenger.
PluginBase::$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 3
PluginBase::getPluginId public function Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable public function Determines if the plugin is configurable.
PluginBase::__construct public function Constructs a \Drupal\Component\Plugin\PluginBase object. 92
RenderElement::preRenderAjaxForm public static function Adds Ajax information about an element to communicate with JavaScript.
RenderElement::preRenderGroup public static function Adds members of this group as actual elements for rendering.
RenderElement::processAjaxForm public static function Form element processing handler for the #ajax form property. 1
RenderElement::processGroup public static function Arranges elements into groups.
RenderElement::setAttributes public static function Sets a form element's class attribute. Overrides ElementInterface::setAttributes
StringTranslationTrait::$stringTranslation protected property The string translation service. 1
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.
Value::getInfo public function Returns the element properties for this element. Overrides ElementInterface::getInfo