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class LanguageConfigEntityFormBase in Flags 8

Class ConfigEntityFormBase.

Typically, we need to build the same form for both adding a new entity, and editing an existing entity. Instead of duplicating our form code, we create a base class. Drupal never routes to this class directly, but instead through the child classes of ConfigAddForm and ConfigEditForm.

@package Drupal\flags_languages\Form

Hierarchy

Expanded class hierarchy of LanguageConfigEntityFormBase

File

flags_ui/src/Form/LanguageConfigEntityFormBase.php, line 25

Namespace

Drupal\flags_ui\Form
View source 
class LanguageConfigEntityFormBase extends EntityForm {

  /**
   * The configurable language manager.
   *
   * @var FullLanguageManagerInterface
   */
  protected $languageManager;

  /**
   * Array of all flags with their names.
   *
   * @var string[]
   */
  protected $flags;

  /**
   * Constructs a ContentEntityForm object.
   *
   * @param FullLanguageManagerInterface $language_manager
   *   The configurable language manager.
   * @param string[] $flags
   *   Array of all available flags with their names.
   */
  public function __construct($language_manager, $flags) {
    $this->languageManager = $language_manager;
    $this->flags = $flags;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('flags.language_helper'), $container
      ->get('flags.manager')
      ->getList());
  }

  /**
   * Overrides Drupal\Core\Entity\EntityFormController::form().
   *
   * Builds the entity add/edit form.
   *
   * @param array $form
   *   An associative array containing the structure of the form.
   * @param FormStateInterface $form_state
   *   An instance of FormStateInterface containing the current state of the form.
   *
   * @return array
   *   An associative array containing the FlagMapping add/edit form.
   */
  public function buildForm(array $form, FormStateInterface $form_state) {

    // Get anything we need from the base class.
    $form = parent::buildForm($form, $form_state);

    // Drupal provides the entity to us as a class variable. If this is an
    // existing entity, it will be populated with existing values as class
    // variables. If this is a new entity, it will be a new object with the
    // class of our entity. Drupal knows which class to call from the
    // annotation on our FlagMapping class.

    /** @var FlagMapping $mapping */
    $mapping = $this->entity;
    $languages = \Drupal::service('flags.language_helper')
      ->getAllDefinedLanguages();
    if (\Drupal::moduleHandler()
      ->moduleExists('select_icons')) {
      $flagAttributes = $this
        ->getAttributes(array_keys($this->flags));
      $languageAttributes = $this
        ->getAttributes(array_keys($languages));
      $form['source'] = [
        '#type' => 'select_icons',
        '#options_attributes' => $languageAttributes,
      ];
      $form['flag'] = [
        '#type' => 'select_icons',
        '#options_attributes' => $flagAttributes,
        '#attached' => array(
          'library' => array(
            'flags/flags',
          ),
        ),
      ];
    }
    else {
      $form['source']['#type'] = 'select';
      $form['flag']['#type'] = 'select';
    }
    $form['source'] += [
      '#title' => $this
        ->t('Language'),
      '#default_value' => $mapping
        ->getSource(),
      '#description' => $this
        ->t('Select a source language.'),
      '#options' => $this->languageManager
        ->getAllDefinedLanguages(),
      '#required' => TRUE,
    ];
    $form['flag'] += [
      '#title' => $this
        ->t('Flag'),
      '#options' => $this->flags,
      '#empty_value' => '',
      '#default_value' => $mapping
        ->getFlag(),
      '#description' => $this
        ->t('Select a target territory flag.'),
      '#required' => TRUE,
    ];

    // Return the form.
    return $form;
  }

  /**
   * Overrides Drupal\Core\Entity\EntityFormController::actions().
   *
   * To set the submit button text, we need to override actions().
   *
   * @param array $form
   *   An associative array containing the structure of the form.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   An associative array containing the current state of the form.
   *
   * @return array
   *   An array of supported actions for the current entity form.
   */
  protected function actions(array $form, FormStateInterface $form_state) {

    // Get the basic actions from the base class.
    $actions = parent::actions($form, $form_state);

    // Change the submit button text.
    $actions['submit']['#value'] = $this
      ->t('Save');

    // Return the result.
    return $actions;
  }

  /**
   * Overrides Drupal\Core\Entity\EntityFormController::save().
   *
   * Saves the entity. This is called after submit() has built the entity from
   * the form values. Do not override submit() as save() is the preferred
   * method for entity form controllers.
   *
   * @param array $form
   *   An associative array containing the structure of the form.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   An associative array containing the current state of the form.
   *
   * @return int
   *   Either SAVED_NEW or SAVED_UPDATED, depending on the operation performed.
   */
  public function save(array $form, FormStateInterface $form_state) {

    // EntityForm provides us with the entity we're working on.

    /** @var FlagMapping $mapping */
    $mapping = $this
      ->getEntity();

    // Drupal already populated the form values in the entity object. Each
    // form field was saved as a public variable in the entity class. PHP
    // allows Drupal to do this even if the method is not defined ahead of
    // time.
    $status = $mapping
      ->save();

    // Grab the URL of the new entity. We'll use it in the message.
    $url = $mapping
      ->toUrl();

    // Create an edit link.
    $edit_link = Link::fromTextAndUrl($this
      ->t('Edit'), $url)
      ->toString();
    if ($status == SAVED_UPDATED) {

      // If we edited an existing entity...
      $this
        ->messenger()
        ->addStatus($this
        ->t('Mapping %label has been updated.', array(
        '%label' => $mapping
          ->label(),
      )));
      $this
        ->logger('flags_languages')
        ->notice('Mapping %label has been updated.', [
        '%label' => $mapping
          ->label(),
        'link' => $edit_link,
      ]);
    }
    else {

      // If we created a new entity...
      $this
        ->messenger()
        ->addStatus($this
        ->t('Mapping %label has been added.', array(
        '%label' => $mapping
          ->label(),
      )));
      $this
        ->logger('flags_languages')
        ->notice('Mapping %label has been added.', [
        '%label' => $mapping
          ->label(),
        'link' => $edit_link,
      ]);
    }

    // Redirect the user back to the listing route after the save operation.
    $form_state
      ->setRedirect('entity.language_flag_mapping.list');
    return $status;
  }

  /**
   * Gets array with attributes for each option element.
   *
   * @return Attribute[]
   */
  protected function getAttributes($items) {
    $mapper = \Drupal::service('flags.mapping.language');
    $attributes = $mapper
      ->getOptionAttributes($items);
    return $attributes;
  }

}

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
EntityForm::$entity protected property The entity being used by this form. 7
EntityForm::$entityTypeManager protected property The entity type manager. 3
EntityForm::$moduleHandler protected property The module handler service.
EntityForm::$operation protected property The name of the current operation.
EntityForm::$privateEntityManager private property The entity manager.
EntityForm::actionsElement protected function Returns the action form element for the current entity form.
EntityForm::afterBuild public function Form element #after_build callback: Updates the entity with submitted data.
EntityForm::buildEntity public function Builds an updated entity object based upon the submitted form values. Overrides EntityFormInterface::buildEntity 2
EntityForm::copyFormValuesToEntity protected function Copies top-level form values to entity properties 7
EntityForm::form public function Gets the actual form array to be built. 30
EntityForm::getBaseFormId public function Returns a string identifying the base form. Overrides BaseFormIdInterface::getBaseFormId 5
EntityForm::getEntity public function Gets the form entity. Overrides EntityFormInterface::getEntity
EntityForm::getEntityFromRouteMatch public function Determines which entity will be used by this form from a RouteMatch object. Overrides EntityFormInterface::getEntityFromRouteMatch 1
EntityForm::getFormId public function Returns a unique string identifying the form. Overrides FormInterface::getFormId 10
EntityForm::getOperation public function Gets the operation identifying the form. Overrides EntityFormInterface::getOperation
EntityForm::init protected function Initialize the form state and the entity before the first form build. 3
EntityForm::prepareEntity protected function Prepares the entity object before the form is built first. 3
EntityForm::prepareInvokeAll protected function Invokes the specified prepare hook variant.
EntityForm::processForm public function Process callback: assigns weights and hides extra fields.
EntityForm::setEntity public function Sets the form entity. Overrides EntityFormInterface::setEntity
EntityForm::setEntityManager public function Sets the entity manager for this form. Overrides EntityFormInterface::setEntityManager
EntityForm::setEntityTypeManager public function Sets the entity type manager for this form. Overrides EntityFormInterface::setEntityTypeManager
EntityForm::setModuleHandler public function Sets the module handler for this form. Overrides EntityFormInterface::setModuleHandler
EntityForm::setOperation public function Sets the operation for this form. Overrides EntityFormInterface::setOperation
EntityForm::submitForm public function This is the default entity object builder function. It is called before any other submit handler to build the new entity object to be used by the following submit handlers. At this point of the form workflow the entity is validated and the form state… Overrides FormInterface::submitForm 17
EntityForm::__get public function
EntityForm::__set public function
FormBase::$configFactory protected property The config factory. 1
FormBase::$requestStack protected property The request stack. 1
FormBase::$routeMatch protected property The route match.
FormBase::config protected function Retrieves a configuration object.
FormBase::configFactory protected function Gets the config factory for this form. 1
FormBase::container private function Returns the service container.
FormBase::currentUser protected function Gets the current user.
FormBase::getRequest protected function Gets the request object.
FormBase::getRouteMatch protected function Gets the route match.
FormBase::logger protected function Gets the logger for a specific channel.
FormBase::redirect protected function Returns a redirect response object for the specified route. Overrides UrlGeneratorTrait::redirect
FormBase::resetConfigFactory public function Resets the configuration factory.
FormBase::setConfigFactory public function Sets the config factory for this form.
FormBase::setRequestStack public function Sets the request stack object to use.
FormBase::validateForm public function Form validation handler. Overrides FormInterface::validateForm 62
LanguageConfigEntityFormBase::$flags protected property Array of all flags with their names.
LanguageConfigEntityFormBase::$languageManager protected property The configurable language manager.
LanguageConfigEntityFormBase::actions protected function Overrides Drupal\Core\Entity\EntityFormController::actions(). Overrides EntityForm::actions 2
LanguageConfigEntityFormBase::buildForm public function Overrides Drupal\Core\Entity\EntityFormController::form(). Overrides EntityForm::buildForm 1
LanguageConfigEntityFormBase::create public static function Instantiates a new instance of this class. Overrides FormBase::create
LanguageConfigEntityFormBase::getAttributes protected function Gets array with attributes for each option element.
LanguageConfigEntityFormBase::save public function Overrides Drupal\Core\Entity\EntityFormController::save(). Overrides EntityForm::save
LanguageConfigEntityFormBase::__construct public function Constructs a ContentEntityForm object.
LinkGeneratorTrait::$linkGenerator protected property The link generator. 1
LinkGeneratorTrait::getLinkGenerator Deprecated protected function Returns the link generator.
LinkGeneratorTrait::l Deprecated protected function Renders a link to a route given a route name and its parameters.
LinkGeneratorTrait::setLinkGenerator Deprecated public function Sets the link generator service.
LoggerChannelTrait::$loggerFactory protected property The logger channel factory service.
LoggerChannelTrait::getLogger protected function Gets the logger for a specific channel.
LoggerChannelTrait::setLoggerFactory public function Injects the logger channel factory.
MessengerTrait::$messenger protected property The messenger. 29
MessengerTrait::messenger public function Gets the messenger. 29
MessengerTrait::setMessenger public function Sets the messenger.
RedirectDestinationTrait::$redirectDestination protected property The redirect destination service. 1
RedirectDestinationTrait::getDestinationArray protected function Prepares a 'destination' URL query parameter for use with \Drupal\Core\Url.
RedirectDestinationTrait::getRedirectDestination protected function Returns the redirect destination service.
RedirectDestinationTrait::setRedirectDestination public function Sets the redirect destination service.
StringTranslationTrait::$stringTranslation protected property The string translation service. 1
StringTranslationTrait::formatPlural protected function Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals protected function Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation protected function Gets the string translation service.
StringTranslationTrait::setStringTranslation public function Sets the string translation service to use. 2
StringTranslationTrait::t protected function Translates a string to the current language or to a given language.
UrlGeneratorTrait::$urlGenerator protected property The url generator.
UrlGeneratorTrait::getUrlGenerator Deprecated protected function Returns the URL generator service.
UrlGeneratorTrait::setUrlGenerator Deprecated public function Sets the URL generator service.
UrlGeneratorTrait::url Deprecated protected function Generates a URL or path for a specific route based on the given parameters.