class Value in Drupal 8

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

• class \Drupal\Component\Plugin\PluginBase implements DerivativeInspectionInterface, PluginInspectionInterface
  • class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, MessengerTrait, StringTranslationTrait
    • class \Drupal\Core\Render\Element\RenderElement implements ElementInterface
      • class \Drupal\Core\Render\Element\FormElement implements FormElementInterface
        • class \Drupal\Core\Render\Element\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

class Value extends FormElement {

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

}

Members

Name	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