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class Required in Clientside Validation 8

Same name and namespace in other branches
  1. 8.2 src/Plugin/CvValidator/Required.php \Drupal\clientside_validation\Plugin\CvValidator\Required
  2. 3.0.x src/Plugin/CvValidator/Required.php \Drupal\clientside_validation\Plugin\CvValidator\Required
  3. 2.0.x src/Plugin/CvValidator/Required.php \Drupal\clientside_validation\Plugin\CvValidator\Required

Provides a 'required' validator.

Plugin annotation


@CvValidator(
  id = "required",
  name = @Translation("Required"),
  supports = {
    "attributes" = {"required", "states"}
  }
)

Hierarchy

Expanded class hierarchy of Required

File

src/Plugin/CvValidator/Required.php, line 19

Namespace

Drupal\clientside_validation\Plugin\CvValidator
View source
class Required extends CvValidatorBase {

  /**
   * An array of conditionally required states.
   *
   * @var array
   */
  protected $states = [
    'required' => 'required',
    'optional' => 'optional',
    '!required' => '!required',
    '!optional' => '!optional',
  ];

  /**
   * {@inheritdoc}
   */
  protected function getRules($element, FormStateInterface $form_state) {
    $is_required = $this
      ->getAttributeValue($element, 'required');
    $states = $this
      ->getAttributeValue($element, 'states') ?: [];
    if (is_array($states)) {
      $is_conditionally_required = array_diff_key($this->states, $states);
    }
    else {
      $is_conditionally_required = $this->states;
    }

    // Drupal already adds the required attribute, so we don't need to set the
    // required rule.
    if ($is_required || $is_conditionally_required) {
      $message = $element['#required_error'] ?? $this
        ->t('@title is required.', [
        '@title' => $this
          ->getElementTitle($element),
      ]);
      return [
        'messages' => [
          'required' => $message,
        ],
      ];
    }
  }

}

Members

Namesort descending Modifiers Type Description Overrides
CvValidatorBase::addValidation public function Makes the necessary changes to the form element so it can be validated. Overrides CvValidatorInterface::addValidation 1
CvValidatorBase::getAttributeValue protected function Get the value of an attribute of an element.
CvValidatorBase::getElementTitle protected function Get title for form element.
CvValidatorBase::getName public function Return the name of the validator flavor. Overrides CvValidatorInterface::getName
PluginBase::$configuration protected property Configuration information passed into the plugin. 1
PluginBase::$pluginDefinition protected property The plugin implementation definition. 1
PluginBase::$pluginId protected property The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR constant A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId public function Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId public function Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginDefinition public function Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition 3
PluginBase::getPluginId public function Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable public function Determines if the plugin is configurable.
PluginBase::__construct public function Constructs a \Drupal\Component\Plugin\PluginBase object. 92
Required::$states protected property An array of conditionally required states.
Required::getRules protected function Get the validation rules for this form element. Overrides CvValidatorBase::getRules
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.