abstract class ForumBlockBase in Drupal 9

Provides a base class for Forum blocks.

Hierarchy

• class \Drupal\Component\Plugin\PluginBase implements DerivativeInspectionInterface, PluginInspectionInterface
  • class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, MessengerTrait, StringTranslationTrait
    • class \Drupal\Core\Block\BlockBase implements BlockPluginInterface, ContextAwarePluginInterface, PluginWithFormsInterface, PreviewFallbackInterface uses BlockPluginTrait, ContextAwarePluginAssignmentTrait, ContextAwarePluginTrait
      • class \Drupal\forum\Plugin\Block\ForumBlockBase

File

core/modules/forum/src/Plugin/Block/ForumBlockBase.php, line 15

Namespace

Drupal\forum\Plugin\Block

abstract class ForumBlockBase extends BlockBase {

  /**
   * {@inheritdoc}
   */
  public function build() {
    $result = $this
      ->buildForumQuery()
      ->execute();
    $elements = [];
    if ($node_title_list = node_title_list($result)) {
      $elements['forum_list'] = $node_title_list;
      $elements['forum_more'] = [
        '#type' => 'more_link',
        '#url' => Url::fromRoute('forum.index'),
        '#attributes' => [
          'title' => $this
            ->t('Read the latest forum topics.'),
        ],
      ];
    }
    return $elements;
  }

  /**
   * Builds the select query to use for this forum block.
   *
   * @return \Drupal\Core\Database\Query\Select
   *   A Select object.
   */
  protected abstract function buildForumQuery();

  /**
   * {@inheritdoc}
   */
  public function defaultConfiguration() {
    return [
      'properties' => [
        'administrative' => TRUE,
      ],
      'block_count' => 5,
    ];
  }

  /**
   * {@inheritdoc}
   */
  protected function blockAccess(AccountInterface $account) {
    return AccessResult::allowedIfHasPermission($account, 'access content');
  }

  /**
   * {@inheritdoc}
   */
  public function blockForm($form, FormStateInterface $form_state) {
    $range = range(2, 20);
    $form['block_count'] = [
      '#type' => 'select',
      '#title' => $this
        ->t('Number of topics'),
      '#default_value' => $this->configuration['block_count'],
      '#options' => array_combine($range, $range),
    ];
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function blockSubmit($form, FormStateInterface $form_state) {
    $this->configuration['block_count'] = $form_state
      ->getValue('block_count');
  }

  /**
   * {@inheritdoc}
   */
  public function getCacheContexts() {
    return Cache::mergeContexts(parent::getCacheContexts(), [
      'user.node_grants:view',
    ]);
  }

  /**
   * {@inheritdoc}
   */
  public function getCacheTags() {
    return Cache::mergeTags(parent::getCacheTags(), [
      'node_list',
    ]);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
BlockBase::buildConfigurationForm	public	function	Form constructor. Overrides PluginFormInterface::buildConfigurationForm	2
BlockPluginInterface::BLOCK_LABEL_VISIBLE		constant	Indicates the block label (title) should be displayed to end users.
BlockPluginTrait::$transliteration	protected	property	The transliteration service.
BlockPluginTrait::access	public	function
BlockPluginTrait::baseConfigurationDefaults	protected	function	Returns generic default configuration for block plugins.
BlockPluginTrait::blockValidate	public	function		3
BlockPluginTrait::buildConfigurationForm	public	function	Creates a generic configuration form for all block types. Individual block plugins can add elements to this form by overriding BlockBase::blockForm(). Most block plugins should not override this method unless they need to alter the generic form elements. Aliased as: traitBuildConfigurationForm
BlockPluginTrait::calculateDependencies	public	function
BlockPluginTrait::getConfiguration	public	function		1
BlockPluginTrait::getMachineNameSuggestion	public	function		1
BlockPluginTrait::getPreviewFallbackString	public	function		3
BlockPluginTrait::label	public	function
BlockPluginTrait::setConfiguration	public	function
BlockPluginTrait::setConfigurationValue	public	function
BlockPluginTrait::setTransliteration	public	function	Sets the transliteration service.
BlockPluginTrait::submitConfigurationForm	public	function	Most block plugins should not override this method. To add submission handling for a specific block type, override BlockBase::blockSubmit().
BlockPluginTrait::transliteration	protected	function	Wraps the transliteration service.
BlockPluginTrait::validateConfigurationForm	public	function	Most block plugins should not override this method. To add validation for a specific block type, override BlockBase::blockValidate().	1
BlockPluginTrait::__construct	public	function		24
ContextAwarePluginAssignmentTrait::addContextAssignmentElement	protected	function	Builds a form element for assigning a context to a given slot.
ContextAwarePluginAssignmentTrait::contextHandler	protected	function	Wraps the context handler.
ContextAwarePluginTrait::$context	protected	property	The data objects representing the context of this plugin.
ContextAwarePluginTrait::$initializedContextConfig	protected	property	Tracks whether the context has been initialized from configuration.
ContextAwarePluginTrait::getCacheMaxAge	public	function		7
ContextAwarePluginTrait::getContext	public	function
ContextAwarePluginTrait::getContextDefinition	public	function
ContextAwarePluginTrait::getContextDefinitions	public	function
ContextAwarePluginTrait::getContextMapping	public	function
ContextAwarePluginTrait::getContexts	public	function
ContextAwarePluginTrait::getContextValue	public	function
ContextAwarePluginTrait::getContextValues	public	function
ContextAwarePluginTrait::getPluginDefinition	abstract protected	function		1
ContextAwarePluginTrait::setContext	public	function		1
ContextAwarePluginTrait::setContextMapping	public	function
ContextAwarePluginTrait::setContextValue	public	function
ContextAwarePluginTrait::validateContexts	public	function
DependencySerializationTrait::$_entityStorages	protected	property
DependencySerializationTrait::$_serviceIds	protected	property
DependencySerializationTrait::__sleep	public	function		2
DependencySerializationTrait::__wakeup	public	function		2
ForumBlockBase::blockAccess	protected	function	Indicates whether the block should be shown. Overrides BlockPluginTrait::blockAccess
ForumBlockBase::blockForm	public	function	Overrides BlockPluginTrait::blockForm
ForumBlockBase::blockSubmit	public	function	Overrides BlockPluginTrait::blockSubmit
ForumBlockBase::build	public	function	Builds and returns the renderable array for this block plugin. Overrides BlockPluginInterface::build
ForumBlockBase::buildForumQuery	abstract protected	function	Builds the select query to use for this forum block.	2
ForumBlockBase::defaultConfiguration	public	function	Overrides BlockPluginTrait::defaultConfiguration
ForumBlockBase::getCacheContexts	public	function	Overrides ContextAwarePluginTrait::getCacheContexts
ForumBlockBase::getCacheTags	public	function	Overrides ContextAwarePluginTrait::getCacheTags
MessengerTrait::$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::$pluginId	protected	property	The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR		constant	A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId	public	function	Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId	public	function	Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginId	public	function	Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable	public	function	Determines if the plugin is configurable.
PluginWithFormsTrait::getFormClass	public	function	Implements \Drupal\Core\Plugin\PluginWithFormsInterface::getFormClass().
PluginWithFormsTrait::hasFormClass	public	function	Implements \Drupal\Core\Plugin\PluginWithFormsInterface::hasFormClass().
StringTranslationTrait::$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.