class Rss in Zircon Profile 8

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

• class \Drupal\Component\Plugin\PluginBase implements DerivativeInspectionInterface, PluginInspectionInterface
  • class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, StringTranslationTrait
    • class \Drupal\views\Plugin\views\PluginBase implements DependentPluginInterface, ContainerFactoryPluginInterface, ViewsPluginInterface
      • class \Drupal\views\Plugin\views\style\StylePluginBase
        • class \Drupal\views\Plugin\views\style\Rss

Related topics

Views style plugins

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

1 string reference to 'Rss'

Feed::export in vendor/zendframework/zend-feed/src/Writer/Feed.php

Attempt to build and return the feed resulting from the data set

File

core/modules/views/src/Plugin/views/style/Rss.php, line 26

Contains \Drupal\views\Plugin\views\style\Rss.

Namespace

Drupal\views\Plugin\views\style

class Rss extends StylePluginBase {

  /**
   * Does the style plugin for itself support to add fields to it's output.
   *
   * @var bool
   */
  protected $usesRowPlugin = TRUE;
  public function attachTo(array &$build, $display_id, Url $feed_url, $title) {
    $url_options = array();
    $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'][][] = array(
      'rel' => 'alternate',
      'type' => 'application/rss+xml',
      'title' => $title,
      'href' => $url,
    );
  }
  protected function defineOptions() {
    $options = parent::defineOptions();
    $options['description'] = array(
      'default' => '',
    );
    return $options;
  }
  public function buildOptionsForm(&$form, FormStateInterface $form_state) {
    parent::buildOptionsForm($form, $form_state);
    $form['description'] = array(
      '#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 array();
  }

  /**
   * 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)) {
      debug('Drupal\\views\\Plugin\\views\\style\\Rss: Missing row plugin');
      return array();
    }
    $rows = [];

    // This will be filled in by the row plugin and is used later on in the
    // theming output.
    $this->namespaces = array(
      '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 = array(
      '#theme' => $this
        ->themeFunctions(),
      '#view' => $this->view,
      '#options' => $this->options,
      '#rows' => $rows,
    );
    unset($this->view->row_index);
    return $build;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DependencySerializationTrait::$_serviceIds	protected	property	An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep	public	function		1
DependencySerializationTrait::__wakeup	public	function		2
PluginBase::$configuration	protected	property	Configuration information passed into the plugin.	2
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.
PluginBase::$pluginId	protected	property	The plugin_id.
PluginBase::$renderer	protected	property	Stores the render API renderer.	2
PluginBase::$view	public	property	The top object of a view.	1
PluginBase::calculateDependencies	public	function	Calculates dependencies for the configured plugin. Overrides DependentPluginInterface::calculateDependencies	20
PluginBase::create	public static	function	Creates an instance of the plugin. Overrides ContainerFactoryPluginInterface::create	50
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
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::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	Does the style plugin for itself support to add fields to it's output. 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.
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::$usesFields	protected	property	Does the style plugin for itself support to add fields to it's output.	3
StylePluginBase::$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 a 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::usesFields		function	Return TRUE if this style also uses fields.	3
StylePluginBase::usesGrouping		function	Returns the usesGrouping property.	3
StylePluginBase::usesRowClass		function	Returns the usesRowClass property.	3
StylePluginBase::usesRowPlugin		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	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