class Price in Price 3.0.x

Same name in this branch

3.0.x src/Price.php \Drupal\price\Price
3.0.x src/Element/Price.php \Drupal\price\Element\Price

Same name and namespace in other branches

8 src/Element/Price.php \Drupal\price\Element\Price
3.x src/Element/Price.php \Drupal\price\Element\Price
2.0.x src/Element/Price.php \Drupal\price\Element\Price
2.x src/Element/Price.php \Drupal\price\Element\Price

Provides a price form element.

Usage example:

$form['amount'] = [
  '#type' => 'price_price',
  '#title' => $this
    ->t('Amount'),
  '#default_value' => [
    'number' => '99.99',
    'currency_code' => 'USD',
  ],
  '#allow_negative' => FALSE,
  '#size' => 60,
  '#maxlength' => 128,
  '#required' => TRUE,
  '#available_currencies' => [
    'USD',
    'EUR',
  ],
];

Plugin annotation

@FormElement("price_price");

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\price\Element\Price

Expanded class hierarchy of Price

2 string references to 'Price'

price.info.yml in ./price.info.yml: price.info.yml
price.schema.yml in config/schema/price.schema.yml: config/schema/price.schema.yml

File

src/Element/Price.php, line 27

Namespace

Drupal\price\Element

View source

class Price extends FormElement {

  /**
   * {@inheritdoc}
   */
  public function getInfo() {
    $class = get_class($this);
    return [
      // List of currencies codes. If empty, all currencies will be available.
      '#available_currencies' => [],
      // The check is performed here so that it is cached.
      '#price_inline_errors' => \Drupal::moduleHandler()
        ->moduleExists('inline_form_errors'),
      '#size' => 10,
      '#maxlength' => 128,
      '#default_value' => NULL,
      '#allow_negative' => FALSE,
      '#attached' => [
        'library' => [
          'price/admin',
        ],
      ],
      '#element_validate' => [
        [
          $class,
          'moveInlineErrors',
        ],
      ],
      '#process' => [
        [
          $class,
          'processElement',
        ],
        [
          $class,
          'processAjaxForm',
        ],
        [
          $class,
          'processGroup',
        ],
      ],
      '#pre_render' => [
        [
          $class,
          'preRenderGroup',
        ],
      ],
      '#input' => TRUE,
      '#theme_wrappers' => [
        'container',
      ],
    ];
  }

  /**
   * Builds the price_price form element.
   *
   * @param array $element
   *   The initial price_price form element.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   * @param array $complete_form
   *   The complete form structure.
   *
   * @return array
   *   The built price_price form element.
   *
   * @throws \InvalidArgumentException
   *   Thrown when #default_value is not an instance of
   *   \Drupal\price\Price.
   */
  public static function processElement(array $element, FormStateInterface $form_state, array &$complete_form) {
    $default_value = $element['#default_value'];
    if (isset($default_value) && !self::validateDefaultValue($default_value)) {
      throw new \InvalidArgumentException('The #default_value for a price_price element must be an array with "number" and "currency_code" keys.');
    }

    /** @var \Drupal\Core\Config\Entity\ConfigEntityStorageInterface $currency_storage */
    $currency_storage = \Drupal::service('entity_type.manager')
      ->getStorage('price_currency');

    /** @var \Drupal\price\Entity\CurrencyInterface[] $currencies */
    $currencies = $currency_storage
      ->loadMultiple();
    $currency_codes = array_keys($currencies);

    // Keep only available currencies.
    $available_currencies = $element['#available_currencies'];
    if (isset($available_currencies) && !empty($available_currencies)) {
      $currency_codes = array_intersect($currency_codes, $available_currencies);
    }

    // Stop rendering if there are no currencies available.
    if (empty($currency_codes)) {
      return $element;
    }
    $fraction_digits = [];
    foreach ($currencies as $currency) {
      $fraction_digits[] = $currency
        ->getFractionDigits();
    }
    $element['#tree'] = TRUE;
    $element['#attributes']['class'][] = 'form-type-price-price';
    $element['number'] = [
      '#type' => 'price_number',
      '#title' => $element['#title'],
      '#title_display' => $element['#title_display'],
      '#default_value' => $default_value ? $default_value['number'] : NULL,
      '#required' => $element['#required'],
      '#size' => $element['#size'],
      '#maxlength' => $element['#maxlength'],
      '#min_fraction_digits' => min($fraction_digits),
      '#min' => $element['#allow_negative'] ? NULL : 0,
      '#error_no_message' => TRUE,
    ];
    if (isset($element['#ajax'])) {
      $element['number']['#ajax'] = $element['#ajax'];
    }
    if (count($currency_codes) == 1) {
      $last_visible_element = 'number';
      $currency_code = reset($currency_codes);
      $element['number']['#field_suffix'] = $currency_code;
      $element['currency_code'] = [
        '#type' => 'hidden',
        '#value' => $currency_code,
      ];
    }
    else {
      $last_visible_element = 'currency_code';
      $element['currency_code'] = [
        '#type' => 'select',
        '#title' => t('Currency'),
        '#default_value' => $default_value ? $default_value['currency_code'] : NULL,
        '#options' => array_combine($currency_codes, $currency_codes),
        '#title_display' => 'invisible',
        '#field_suffix' => '',
      ];
      if (isset($element['#ajax'])) {
        $element['currency_code']['#ajax'] = $element['#ajax'];
      }
    }

    // Add the help text if specified.
    if (!empty($element['#description'])) {
      $element[$last_visible_element]['#field_suffix'] .= '<div class="description">' . $element['#description'] . '</div>';
    }

    // Remove the keys that were transferred to child elements.
    unset($element['#size']);
    unset($element['#maxlength']);
    unset($element['#ajax']);
    return $element;
  }

  /**
   * Validates the default value.
   *
   * @param mixed $default_value
   *   The default value.
   *
   * @return bool
   *   TRUE if the default value is valid, FALSE otherwise.
   */
  public static function validateDefaultValue($default_value) {
    if (!is_array($default_value)) {
      return FALSE;
    }
    if (!array_key_exists('number', $default_value) || !array_key_exists('currency_code', $default_value)) {
      return FALSE;
    }
    return TRUE;
  }

  /**
   * Moves inline errors from the "number" element to the main element.
   *
   * This ensures that they are displayed in the right place
   * (below both number and currency_code, instead of between them).
   *
   * Only performed when the inline_form_errors module is installed.
   *
   * @param array $element
   *   The form element.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   */
  public static function moveInlineErrors(array $element, FormStateInterface $form_state) {
    $error = $form_state
      ->getError($element['number']);
    if (!empty($error) && !empty($element['#price_inline_errors'])) {
      $form_state
        ->setError($element, $error);
    }
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DependencySerializationTrait::$_entityStorages	protected	property
DependencySerializationTrait::$_serviceIds	protected	property
DependencySerializationTrait::__sleep	public	function		2
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::$messenger	protected	property	The messenger.	27
MessengerTrait::messenger	public	function	Gets the messenger.	27
MessengerTrait::setMessenger	public	function	Sets the messenger.
PluginBase::$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	public	function	Determines if the plugin is configurable.
PluginBase::__construct	public	function	Constructs a \Drupal\Component\Plugin\PluginBase object.	98
Price::getInfo	public	function	Returns the element properties for this element. Overrides ElementInterface::getInfo
Price::moveInlineErrors	public static	function	Moves inline errors from the "number" element to the main element.
Price::processElement	public static	function	Builds the price_price form element.
Price::validateDefaultValue	public static	function	Validates the default value.
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.	4
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.

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class Price in Price 3.0.x

Plugin annotation

Hierarchy

File

Namespace

Members

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