class CardCode in Creditfield Form Element 8

Provides a one-line credit card number field form element.

Plugin annotation

@FormElement("creditfield_cardcode");

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\creditfield\Element\CardCode

1 file declares its use of CardCode

CardCodeTest.php in tests/src/Unit/Element/CardCodeTest.php

File

src/Element/CardCode.php, line 14

Namespace

Drupal\creditfield\Element

class CardCode extends FormElement {

  /**
   * {@inheritdoc}
   */
  public function getInfo() {
    $class = get_class($this);
    return [
      '#input' => TRUE,
      '#maxlength' => 4,
      '#autocomplete_route_name' => FALSE,
      '#element_validate' => [
        [
          $class,
          'validateCardCode',
        ],
      ],
      '#process' => [
        [
          $class,
          'processCardCode',
        ],
      ],
      '#pre_render' => [
        [
          $class,
          'preRenderCardCode',
        ],
      ],
      '#theme' => 'input__textfield',
      '#theme_wrappers' => [
        'form_element',
      ],
    ];
  }

  /**
   * {@inheritdoc}
   */
  public static function processCardCode(&$element, FormStateInterface $form_state, &$complete_form) {
    return $element;
  }

  /**
   * {@inheritdoc}
   */
  public static function validateCardCode(&$element, FormStateInterface $form_state, &$complete_form) {
    if (!static::numberIsValid($element['#value'])) {
      $form_state
        ->setError($element, t('Please enter a valid card code.'));
      return;
    }
  }

  /**
   * {@inheritdoc}
   */
  public static function valueCallback(&$element, $input, FormStateInterface $form_state) {
    if ($input !== FALSE && $input !== NULL) {

      // Equate $input to the form value to ensure it's marked for
      // validation.
      return str_replace([
        "\r",
        "\n",
      ], '', $input);
    }
  }

  /**
   * Prepares a #type 'creditfield_code' render element for input.html.twig.
   *
   * @param array $element
   *   An associative array containing the properties of the element.
   *   Properties used: #title, #value, #description, #size, #maxlength,
   *   #placeholder, #required, #attributes.
   *
   * @return array
   *   The $element with prepared variables ready for input.html.twig.
   */
  public static function preRenderCardCode($element) {
    $element['#attributes']['type'] = 'text';
    Element::setAttributes($element, [
      'id',
      'name',
      'value',
      'size',
      'maxlength',
      'placeholder',
    ]);
    static::setAttributes($element, [
      'form-text',
    ]);
    return $element;
  }

  /**
   * Validation of the value submitted in the creditfield_cardcode field.
   * @param $value
   * @return bool
   */
  public static function numberIsValid($value) {

    // value is not an integer or is an integer but not between 3 and 4 digits
    return (bool) preg_match('/^\\d{3,4}$/', $value);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
CardCode::getInfo	public	function	Returns the element properties for this element. Overrides ElementInterface::getInfo
CardCode::numberIsValid	public static	function	Validation of the value submitted in the creditfield_cardcode field.
CardCode::preRenderCardCode	public static	function	Prepares a #type 'creditfield_code' render element for input.html.twig.
CardCode::processCardCode	public static	function
CardCode::validateCardCode	public static	function
CardCode::valueCallback	public static	function	Determines how user input is mapped to an element's #value property. Overrides FormElement::valueCallback
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.
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.