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class Rss in Drupal 9

Same name in this branch
  1. 9 core/modules/views/src/Plugin/views/style/Rss.php \Drupal\views\Plugin\views\style\Rss
  2. 9 core/modules/node/src/Plugin/views/row/Rss.php \Drupal\node\Plugin\views\row\Rss
  3. 9 core/modules/comment/src/Plugin/views/row/Rss.php \Drupal\comment\Plugin\views\row\Rss
  4. 9 core/modules/aggregator/src/Plugin/views/row/Rss.php \Drupal\aggregator\Plugin\views\row\Rss
Same name and namespace in other branches
  1. 8 core/modules/views/src/Plugin/views/style/Rss.php \Drupal\views\Plugin\views\style\Rss

Default style plugin to render an RSS feed.

Plugin annotation


@ViewsStyle(
  id = "rss",
  title = @Translation("RSS Feed"),
  help = @Translation("Generates an RSS feed from a view."),
  theme = "views_view_rss",
  display_types = {"feed"}
)

Hierarchy

Expanded class hierarchy of Rss

Related topics

Views style plugins
Plugins that control how the collection of results is rendered in a view.

File

core/modules/views/src/Plugin/views/style/Rss.php, line 21

Namespace

Drupal\views\Plugin\views\style
View source 
class Rss extends StylePluginBase {

  /**
   * {@inheritdoc}
   */
  protected $usesRowPlugin = TRUE;
  public function attachTo(array &$build, $display_id, Url $feed_url, $title) {
    $url_options = [];
    $input = $this->view
      ->getExposedInput();
    if ($input) {
      $url_options['query'] = $input;
    }
    $url_options['absolute'] = TRUE;
    $url = $feed_url
      ->setOptions($url_options)
      ->toString();

    // Add the RSS icon to the view.
    $this->view->feedIcons[] = [
      '#theme' => 'feed_icon',
      '#url' => $url,
      '#title' => $title,
    ];

    // Attach a link to the RSS feed, which is an alternate representation.
    $build['#attached']['html_head_link'][][] = [
      'rel' => 'alternate',
      'type' => 'application/rss+xml',
      'title' => $title,
      'href' => $url,
    ];
  }
  protected function defineOptions() {
    $options = parent::defineOptions();
    $options['description'] = [
      'default' => '',
    ];
    return $options;
  }
  public function buildOptionsForm(&$form, FormStateInterface $form_state) {
    parent::buildOptionsForm($form, $form_state);
    $form['description'] = [
      '#type' => 'textfield',
      '#title' => $this
        ->t('RSS description'),
      '#default_value' => $this->options['description'],
      '#description' => $this
        ->t('This will appear in the RSS feed itself.'),
      '#maxlength' => 1024,
    ];
  }

  /**
   * Return an array of additional XHTML elements to add to the channel.
   *
   * @return
   *   A render array.
   */
  protected function getChannelElements() {
    return [];
  }

  /**
   * Get RSS feed description.
   *
   * @return string
   *   The string containing the description with the tokens replaced.
   */
  public function getDescription() {
    $description = $this->options['description'];

    // Allow substitutions from the first row.
    $description = $this
      ->tokenizeValue($description, 0);
    return $description;
  }
  public function render() {
    if (empty($this->view->rowPlugin)) {
      trigger_error('Drupal\\views\\Plugin\\views\\style\\Rss: Missing row plugin', E_WARNING);
      return [];
    }
    $rows = [];

    // This will be filled in by the row plugin and is used later on in the
    // theming output.
    $this->namespaces = [
      'xmlns:dc' => 'http://purl.org/dc/elements/1.1/',
    ];

    // Fetch any additional elements for the channel and merge in their
    // namespaces.
    $this->channel_elements = $this
      ->getChannelElements();
    foreach ($this->channel_elements as $element) {
      if (isset($element['namespace'])) {
        $this->namespaces = array_merge($this->namespaces, $element['namespace']);
      }
    }
    foreach ($this->view->result as $row_index => $row) {
      $this->view->row_index = $row_index;
      $rows[] = $this->view->rowPlugin
        ->render($row);
    }
    $build = [
      '#theme' => $this
        ->themeFunctions(),
      '#view' => $this->view,
      '#options' => $this->options,
      '#rows' => $rows,
    ];
    unset($this->view->row_index);
    return $build;
  }

}

Members

Namesort descending Modifiers Type Description Overrides
DependencySerializationTrait::$_entityStorages protected property
DependencySerializationTrait::$_serviceIds protected property
DependencySerializationTrait::__sleep public function 2
DependencySerializationTrait::__wakeup public function 2
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::$definition public property Plugins's definition.
PluginBase::$displayHandler public property The display object this plugin is for.
PluginBase::$options public property Options for this plugin will be held here.
PluginBase::$pluginDefinition protected property The plugin implementation definition. 1
PluginBase::$pluginId protected property The plugin_id.
PluginBase::$renderer protected property Stores the render API renderer. 3
PluginBase::$view public property The top object of a view. 1
PluginBase::calculateDependencies public function Calculates dependencies for the configured plugin. Overrides DependentPluginInterface::calculateDependencies 14
PluginBase::create public static function Creates an instance of the plugin. Overrides ContainerFactoryPluginInterface::create 63
PluginBase::DERIVATIVE_SEPARATOR constant A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::doFilterByDefinedOptions protected function Do the work to filter out stored options depending on the defined options.
PluginBase::filterByDefinedOptions public function Filter out stored options depending on the defined options. Overrides ViewsPluginInterface::filterByDefinedOptions
PluginBase::getAvailableGlobalTokens public function Returns an array of available token replacements. Overrides ViewsPluginInterface::getAvailableGlobalTokens
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::getProvider public function Returns the plugin provider. Overrides ViewsPluginInterface::getProvider
PluginBase::getRenderer protected function Returns the render API renderer. 1
PluginBase::globalTokenForm public function Adds elements for available core tokens to a form. Overrides ViewsPluginInterface::globalTokenForm
PluginBase::globalTokenReplace public function Returns a string with any core tokens replaced. Overrides ViewsPluginInterface::globalTokenReplace
PluginBase::INCLUDE_ENTITY constant Include entity row languages when listing languages.
PluginBase::INCLUDE_NEGOTIATED constant Include negotiated languages when listing languages.
PluginBase::isConfigurable public function Determines if the plugin is configurable.
PluginBase::listLanguages protected function Makes an array of languages, optionally including special languages.
PluginBase::pluginTitle public function Return the human readable name of the display. Overrides ViewsPluginInterface::pluginTitle
PluginBase::preRenderAddFieldsetMarkup public static function Moves form elements into fieldsets for presentation purposes. Overrides ViewsPluginInterface::preRenderAddFieldsetMarkup
PluginBase::preRenderFlattenData public static function Flattens the structure of form elements. Overrides ViewsPluginInterface::preRenderFlattenData
PluginBase::queryLanguageSubstitutions public static function Returns substitutions for Views queries for languages.
PluginBase::setOptionDefaults protected function Fills up the options of the plugin with defaults.
PluginBase::submitOptionsForm public function Handle any special handling on the validate form. Overrides ViewsPluginInterface::submitOptionsForm 16
PluginBase::summaryTitle public function Returns the summary of the settings in the display. Overrides ViewsPluginInterface::summaryTitle 6
PluginBase::themeFunctions public function Provide a full list of possible theme templates used by this style. Overrides ViewsPluginInterface::themeFunctions 1
PluginBase::unpackOptions public function Unpack options over our existing defaults, drilling down into arrays so that defaults don't get totally blown away. Overrides ViewsPluginInterface::unpackOptions
PluginBase::usesOptions public function Returns the usesOptions property. Overrides ViewsPluginInterface::usesOptions 8
PluginBase::viewsTokenReplace protected function Replaces Views' tokens in a given string. The resulting string will be sanitized with Xss::filterAdmin. 1
PluginBase::VIEWS_QUERY_LANGUAGE_SITE_DEFAULT constant Query string to indicate the site default language.
PluginBase::__construct public function Constructs a PluginBase object. Overrides PluginBase::__construct
Rss::$usesRowPlugin protected property Whether or not this style uses a row plugin. Overrides StylePluginBase::$usesRowPlugin
Rss::attachTo public function
Rss::buildOptionsForm public function Provide a form to edit options for this plugin. Overrides StylePluginBase::buildOptionsForm
Rss::defineOptions protected function Information about options for all kinds of purposes will be held here. Overrides StylePluginBase::defineOptions
Rss::getChannelElements protected function Return an array of additional XHTML elements to add to the channel.
Rss::getDescription public function Get RSS feed description.
Rss::render public function Render the display in this style. Overrides StylePluginBase::render
StringTranslationTrait::$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.
StylePluginBase::$defaultFieldLabels protected property Should field labels be enabled by default. 1
StylePluginBase::$groupingTheme protected property The theme function used to render the grouping set.
StylePluginBase::$rendered_fields protected property Stores the rendered field values, keyed by the row index and field name.
StylePluginBase::$rowTokens protected property Store all available tokens row rows.
StylePluginBase::$usesFields protected property Does the style plugin for itself support to add fields to its output. 3
StylePluginBase::$usesGrouping protected property Does the style plugin support grouping of rows. 3
StylePluginBase::$usesOptions protected property Denotes whether the plugin has an additional options form. Overrides PluginBase::$usesOptions
StylePluginBase::$usesRowClass protected property Does the style plugin support custom css class for the rows. 3
StylePluginBase::buildSort public function Called by the view builder to see if this style handler wants to interfere with the sorts. If so it should build; if it returns any non-TRUE value, normal sorting will NOT be added to the query. 1
StylePluginBase::buildSortPost public function Called by the view builder to let the style build a second set of sorts that will come after any other sorts in the view. 1
StylePluginBase::defaultFieldLabels public function Return TRUE if this style enables field labels by default. 1
StylePluginBase::destroy public function Clears a plugin. Overrides PluginBase::destroy
StylePluginBase::elementPreRenderRow public function #pre_render callback for view row field rendering.
StylePluginBase::evenEmpty public function Should the output of the style plugin be rendered even if it's an empty view. 2
StylePluginBase::getField public function Gets a rendered field.
StylePluginBase::getFieldValue public function Get the raw field value.
StylePluginBase::getRowClass public function Return the token replaced row class for the specified row.
StylePluginBase::init public function Overrides \Drupal\views\Plugin\views\PluginBase::init(). Overrides PluginBase::init
StylePluginBase::preRender public function Allow the style to do stuff before each row is rendered.
StylePluginBase::query public function Add anything to the query that we might need to. Overrides PluginBase::query 1
StylePluginBase::renderFields protected function Renders all of the fields for a given style and store them on the object.
StylePluginBase::renderGrouping public function Group records as needed for rendering.
StylePluginBase::renderGroupingSets public function Render the grouping sets.
StylePluginBase::renderRowGroup protected function Renders a group of rows of the grouped view.
StylePluginBase::tokenizeValue public function Take a value and apply token replacement logic to it.
StylePluginBase::trustedCallbacks public static function Lists the trusted callbacks provided by the implementing class. Overrides PluginBase::trustedCallbacks
StylePluginBase::usesFields public function Return TRUE if this style also uses fields. 3
StylePluginBase::usesGrouping public function Returns the usesGrouping property. 3
StylePluginBase::usesRowClass public function Returns the usesRowClass property. 3
StylePluginBase::usesRowPlugin public function Returns the usesRowPlugin property. 10
StylePluginBase::usesTokens public function Return TRUE if this style uses tokens.
StylePluginBase::validate public function Validate that the plugin is correct and can be saved. Overrides PluginBase::validate
StylePluginBase::validateOptionsForm public function Validate the options form. Overrides PluginBase::validateOptionsForm
StylePluginBase::wizardForm Deprecated public function Provide a form in the views wizard if this style is selected.
StylePluginBase::wizardSubmit public function Alter the options of a display before they are added to the view. 1
TrustedCallbackInterface::THROW_EXCEPTION constant Untrusted callbacks throw exceptions.
TrustedCallbackInterface::TRIGGER_SILENCED_DEPRECATION constant Untrusted callbacks trigger silenced E_USER_DEPRECATION errors.
TrustedCallbackInterface::TRIGGER_WARNING constant Untrusted callbacks trigger E_USER_WARNING errors.