class RssFields in Views RSS 8.3
Same name in this branch
- 8.3 src/Plugin/views/style/RssFields.php \Drupal\views_rss\Plugin\views\style\RssFields
- 8.3 src/Plugin/views/row/RssFields.php \Drupal\views_rss\Plugin\views\row\RssFields
Same name and namespace in other branches
- 8.2 src/Plugin/views/style/RssFields.php \Drupal\views_rss\Plugin\views\style\RssFields
Default style plugin to render an RSS feed from fields.
Plugin annotation
@ViewsStyle(
id = "rss_fields",
title = @Translation("RSS Feed - Fields"),
help = @Translation("Generates an RSS feed from fields in 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, MessengerTrait, StringTranslationTrait
- class \Drupal\views\Plugin\views\PluginBase implements DependentPluginInterface, ContainerFactoryPluginInterface, TrustedCallbackInterface, ViewsPluginInterface
- class \Drupal\views\Plugin\views\style\StylePluginBase
- class \Drupal\views_rss\Plugin\views\style\RssFields
- class \Drupal\views\Plugin\views\style\StylePluginBase
- class \Drupal\views\Plugin\views\PluginBase implements DependentPluginInterface, ContainerFactoryPluginInterface, TrustedCallbackInterface, ViewsPluginInterface
- class \Drupal\Core\Plugin\PluginBase uses DependencySerializationTrait, MessengerTrait, StringTranslationTrait
Expanded class hierarchy of RssFields
File
- src/
Plugin/ views/ style/ RssFields.php, line 28 - Definition of Drupal\views\Plugin\views\style\Rss.
Namespace
Drupal\views_rss\Plugin\views\styleView source
class RssFields extends StylePluginBase {
/**
* Does the style plugin for itself support to add fields to it's output.
*
* @var bool
*/
protected $usesRowPlugin = TRUE;
/**
* Does the style plugin support grouping of rows.
*
* @var bool
*/
protected $usesGrouping = FALSE;
/**
* {@inheritdoc}
*/
public function validate() {
$errors = parent::validate();
$plugin = $this->displayHandler
->getPlugin('row');
if ($plugin
->getPluginId() !== 'views_rss_fields') {
$errors[] = $this
->t('Style %style requires an <em>RSS Feed - Fields</em> row plugin.', array(
'%style' => $this->definition['title'],
));
}
return $errors;
}
/**
* {@inheritdoc}
*/
public function attachTo(array &$build, $display_id, $path, $title) {
$url_options = array();
$input = $this->view
->getExposedInput();
if ($input) {
$url_options['query'] = $input;
}
$url_options['absolute'] = TRUE;
$url = _url($this->view
->getUrl(NULL, $path), $url_options);
// 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,
);
}
/**
* {@inheritdoc}
*/
protected function defineOptions() {
$options = parent::defineOptions();
// Namespace defaults.
$namespaces = views_rss_get('namespaces');
if (count($namespaces)) {
foreach ($namespaces as $module => $module_namespaces) {
foreach (array_keys($module_namespaces) as $namespace) {
$options['namespaces'][$module][$namespace] = array(
'default' => NULL,
);
}
}
}
if (function_exists('rdf_get_namespaces')) {
$options['namespaces']['add_rdf_namespaces'] = array(
'default' => FALSE,
);
}
// Channel element defaults.
$channel_elements = views_rss_get('channel_elements');
if (count($channel_elements)) {
foreach ($channel_elements as $module => $module_channel_elements) {
foreach (array_keys($module_channel_elements) as $element) {
list($namespace, $element_name) = views_rss_extract_element_names($element, 'core');
$options['channel'][$namespace][$module][$element_name] = array(
'default' => NULL,
);
}
}
}
// Other feed settings defaults.
$options['feed_settings']['absolute_paths'] = array(
'default' => 1,
);
$options['feed_settings']['feed_in_links'] = array(
'default' => 0,
);
return $options;
}
/**
* {@inheritdoc}
*/
public function buildOptionsForm(&$form, FormStateInterface $form_state) {
parent::buildOptionsForm($form, $form_state);
$initial_labels = array(
'' => $this
->t('- None -'),
);
$view_fields_labels = $this->displayHandler
->getFieldLabels();
$view_fields_labels = array_merge($initial_labels, $view_fields_labels);
$form['uses_fields']['#type'] = 'hidden';
// Element groups could be used both in channel and item settings.
$element_groups = views_rss_get('element_groups');
// Channel elements settings.
$channel_elements = views_rss_get('channel_elements');
if (count($channel_elements)) {
foreach ($channel_elements as $module => $module_channel_elements) {
foreach ($module_channel_elements as $element => $definition) {
if (!isset($definition['configurable']) || $definition['configurable']) {
list($namespace, $element_name) = views_rss_extract_element_names($element, 'core');
// Add fieldset for namespace if not yet added.
if (!isset($form['channel'][$namespace])) {
$form['channel'][$namespace] = array(
'#type' => 'details',
'#title' => t('Channel elements : @namespace', array(
'@namespace' => $namespace,
)),
'#description' => t('Provide values for <channel> elements in "@namespace" namespace. See <a href="@guide_url">Views RSS documentation</a> for more information.', array(
'@namespace' => $namespace,
'@guide_url' => Url::fromUri('http://drupal.org/node/1344136'),
)),
'#open' => FALSE,
);
}
// Prepare form element.
$default_value = NULL;
if (!empty($this->options['channel'][$namespace][$module][$element_name])) {
$default_value = $this->options['channel'][$namespace][$module][$element_name];
}
$form_item = array(
'#type' => 'textfield',
'#title' => Xss::filter(isset($definition['title']) ? $definition['title'] : $element_name),
'#description' => Xss::filter(isset($definition['description']) ? $definition['description'] : NULL),
'#default_value' => $default_value,
);
// Allow to overwrite default form element.
if (!empty($definition['settings form'])) {
$form_item = array_merge($form_item, $definition['settings form']);
// Make sure that #options is an associative array.
if (!empty($definition['settings form']['#options'])) {
$form_item['#options'] = views_rss_map_assoc($definition['settings form']['#options']);
}
}
if (!empty($definition['settings form options callback'])) {
$function = $definition['settings form options callback'];
$form_item['#options'] = views_rss_map_assoc($function());
}
// Add help link if provided.
if (!empty($definition['help'])) {
$form_item['#description'] .= ' ' . \Drupal::l('[?]', Url::fromUri($definition['help']), array(
'attributes' => array(
'title' => t('Need more information?'),
),
));
}
// Check if element should be displayed in a subgroup.
if (!empty($definition['group'])) {
// Add a subgroup to the form if it not yet added.
if (!isset($form['channel'][$namespace][$module][$definition['group']])) {
// Does module provide the group definition?
$group_title = !empty($element_groups[$module][$definition['group']]['title']) ? $element_groups[$module][$definition['group']]['title'] : $definition['group'];
$group_description = !empty($element_groups[$module][$definition['group']]['description']) ? $element_groups[$module][$definition['group']]['description'] : NULL;
$form['channel'][$namespace][$module][$definition['group']] = array(
'#type' => 'fieldset',
'#title' => Xss::filter($group_title),
'#description' => Xss::filter($group_description),
'#collapsible' => TRUE,
'#collapsed' => TRUE,
);
}
$form['channel'][$namespace][$module][$definition['group']][$element_name] = $form_item;
}
else {
$form['channel'][$namespace][$module][$element_name] = $form_item;
}
}
}
}
}
$form['namespaces'] = array(
'#type' => 'details',
'#title' => $this
->t('Namespaces'),
'#open' => FALSE,
);
if (function_exists('rdf_get_namespaces')) {
$form['namespaces']['add_rdf_namespaces'] = array(
'#type' => 'checkbox',
'#title' => $this
->t('Merge RDF namespaces'),
'#description' => $this
->t('Enabling this option will merge RDF namespaces into the XML namespaces in case they are used in the RSS content.'),
'#default_value' => $this->options['namespaces']['add_rdf_namespaces'],
);
}
// Undefined namespaces derived from <channel> and/or <item>
// elements defined by extension modules.
$namespaces = views_rss_get('namespaces');
if (count($namespaces)) {
foreach ($namespaces as $module => $module_namespaces) {
foreach ($module_namespaces as $namespace => $definition) {
if (empty($definition['uri'])) {
// Add fieldset for namespace if not yet added.
if (!isset($form['namespaces'])) {
$form['namespaces']['#description'] = t('Enter missing URLs for namespaces derived from <channel> and/or <item> elements defined by extension modules.');
}
if (!empty($this->options['namespaces'][$module][$namespace])) {
$default_value = $this->options['namespaces'][$module][$namespace];
}
else {
$default_value = NULL;
}
$form['namespaces'][$module][$namespace] = array(
'#type' => 'textfield',
'#title' => check_plain($namespace),
'#default_value' => $default_value,
);
}
}
}
}
// Other feed settings.
$form['feed_settings'] = array(
'#type' => 'details',
'#title' => $this
->t('Other feed settings'),
'#open' => FALSE,
);
$form['feed_settings']['absolute_paths'] = array(
'#type' => 'checkbox',
'#title' => $this
->t("Replace relative paths with absolute URLs"),
'#description' => $this
->t('Enabling this option will replace all relative paths (like <em>/node/1</em>) with absolute URLs (<em>!absolute_url</em>) in all feed elements configured to use this feature (for example <description> element).', array(
'!absolute_url' => trim($GLOBALS['base_url'], '/') . '/node/1',
)),
'#default_value' => !empty($this->options['feed_settings']['absolute_paths']),
'#weight' => 1,
);
$form['feed_settings']['feed_in_links'] = array(
'#type' => 'checkbox',
'#title' => $this
->t('Display feed icon in the links attached to the view'),
'#default_value' => !empty($this->options['feed_settings']['feed_in_links']),
'#weight' => 3,
);
}
public function validateOptionsForm(&$form, FormStateInterface $form_state) {
parent::validateOptionsForm($form, $form_state);
$hook = 'views_rss_options_form_validate';
$modules = \Drupal::moduleHandler()
->getImplementations($hook);
foreach ($modules as $module) {
\Drupal::moduleHandler()
->invoke($module, $hook, array(
$form,
$form_state,
));
}
}
public function submitOptionsForm(&$form, FormStateInterface $form_state) {
parent::submitOptionsForm($form, $form_state);
$hook = 'views_rss_options_form_submit';
$modules = \Drupal::moduleHandler()
->getImplementations($hook);
foreach ($modules as $module) {
\Drupal::moduleHandler()
->invoke($module, $hook, array(
$form,
$form_state,
));
}
}
/**
* Return an array of additional XHTML elements to add to the channel.
*
* @return
* An array that can be passed to format_xml_elements().
*/
protected function getChannelElements() {
$elements = array();
foreach (views_rss_get('channel_elements') as $module => $module_channel_elements) {
foreach ($module_channel_elements as $element => $definition) {
list($element_namespace, $element_name) = views_rss_extract_element_names($element, 'core');
// Try to fetch namespace value from view configuration.
if (isset($this->options['channel'][$element_namespace][$module][$element_name])) {
$element_value = $this->options['channel'][$element_namespace][$module][$element_name];
}
elseif (isset($definition['default_value'])) {
$element_value = $definition['default_value'];
}
else {
$element_value = NULL;
}
// Start building XML channel element array compatible with
// format_xml_elements().
$rss_element = array(
'key' => $element,
'value' => $element_value,
);
if (!empty($element_namespace) && $element_namespace != 'core') {
$rss_element['namespace'] = $element_namespace;
}
// It might happen than a preprocess function will need to split one
// element into multiple ones - this will for example happen for channel
// <category> element, if multiple categories were provided (separated
// by a comma) - they will need to be printed as multiple <category>
// elements - therefore we need to work on array of RSS elements here.
$rss_elements = array(
$rss_element,
);
// Preprocess element value.
if (isset($definition['preprocess functions']) && is_array($definition['preprocess functions'])) {
foreach ($definition['preprocess functions'] as $preprocess_function) {
if (function_exists($preprocess_function)) {
$item_variables = array(
'elements' => &$rss_elements,
'item' => $this->options['channel'],
'view' => $this->view,
);
$preprocess_function($item_variables);
}
}
}
foreach ($rss_elements as $rss_element) {
if (!empty($rss_element['value']) || !empty($rss_element['attributes'])) {
$elements[] = $rss_element;
}
}
}
}
return $elements;
}
/**
* 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;
}
protected function getNamespaces() {
$namespaces = array();
foreach (views_rss_get('namespaces') as $module => $module_namespaces) {
foreach ($module_namespaces as $namespace => $definition) {
// Check if definition provided through modules hooks
// should be overwritten by module configuration.
if (isset($this->options['namespaces'][$module][$namespace]) && !empty($this->options['namespaces'][$module][$namespace])) {
$definition['uri'] = $this->options['namespaces'][$module][$namespace];
}
// Add namespace to feed array.
if (!empty($definition['uri'])) {
// Namespaces with prefix, for example xml:base="" or xmlns:dc=""
if (!empty($definition['prefix'])) {
$namespace_key = $definition['prefix'] . ':' . $namespace;
$namespaces[$namespace_key] = $definition['uri'];
}
else {
$namespaces[$namespace] = $definition['uri'];
}
}
}
}
return $namespaces;
}
/**
* {@inheritdoc}
*/
public function render() {
$rows = '';
$this->namespaces = $this
->getNamespaces();
// Fetch any additional elements for the channel and merge in their
// namespaces.
$this->channel_elements = $this
->getChannelElements();
foreach ($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:: |
protected | property | An array of entity type IDs keyed by the property name of their storages. | |
DependencySerializationTrait:: |
protected | property | An array of service IDs keyed by property name used for serialization. | |
DependencySerializationTrait:: |
public | function | 1 | |
DependencySerializationTrait:: |
public | function | 2 | |
MessengerTrait:: |
protected | property | The messenger. | 29 |
MessengerTrait:: |
public | function | Gets the messenger. | 29 |
MessengerTrait:: |
public | function | Sets the messenger. | |
PluginBase:: |
protected | property | Configuration information passed into the plugin. | 1 |
PluginBase:: |
public | property | Plugins's definition | |
PluginBase:: |
public | property | The display object this plugin is for. | |
PluginBase:: |
public | property | Options for this plugin will be held here. | |
PluginBase:: |
protected | property | The plugin implementation definition. | 1 |
PluginBase:: |
protected | property | The plugin_id. | |
PluginBase:: |
protected | property | Stores the render API renderer. | 3 |
PluginBase:: |
public | property | The top object of a view. | 1 |
PluginBase:: |
public | function |
Calculates dependencies for the configured plugin. Overrides DependentPluginInterface:: |
14 |
PluginBase:: |
public static | function |
Creates an instance of the plugin. Overrides ContainerFactoryPluginInterface:: |
62 |
PluginBase:: |
constant | A string which is used to separate base plugin IDs from the derivative ID. | ||
PluginBase:: |
protected | function | Do the work to filter out stored options depending on the defined options. | |
PluginBase:: |
public | function |
Filter out stored options depending on the defined options. Overrides ViewsPluginInterface:: |
|
PluginBase:: |
public | function |
Returns an array of available token replacements. Overrides ViewsPluginInterface:: |
|
PluginBase:: |
public | function |
Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface:: |
|
PluginBase:: |
public | function |
Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface:: |
|
PluginBase:: |
public | function |
Gets the definition of the plugin implementation. Overrides PluginInspectionInterface:: |
3 |
PluginBase:: |
public | function |
Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface:: |
|
PluginBase:: |
public | function |
Returns the plugin provider. Overrides ViewsPluginInterface:: |
|
PluginBase:: |
protected | function | Returns the render API renderer. | 1 |
PluginBase:: |
public | function |
Adds elements for available core tokens to a form. Overrides ViewsPluginInterface:: |
|
PluginBase:: |
public | function |
Returns a string with any core tokens replaced. Overrides ViewsPluginInterface:: |
|
PluginBase:: |
constant | Include entity row languages when listing languages. | ||
PluginBase:: |
constant | Include negotiated languages when listing languages. | ||
PluginBase:: |
public | function | Determines if the plugin is configurable. | |
PluginBase:: |
protected | function | Makes an array of languages, optionally including special languages. | |
PluginBase:: |
public | function |
Return the human readable name of the display. Overrides ViewsPluginInterface:: |
|
PluginBase:: |
public static | function |
Moves form elements into fieldsets for presentation purposes. Overrides ViewsPluginInterface:: |
|
PluginBase:: |
public static | function |
Flattens the structure of form elements. Overrides ViewsPluginInterface:: |
|
PluginBase:: |
public static | function | Returns substitutions for Views queries for languages. | |
PluginBase:: |
protected | function | Fills up the options of the plugin with defaults. | |
PluginBase:: |
public | function |
Returns the summary of the settings in the display. Overrides ViewsPluginInterface:: |
6 |
PluginBase:: |
public | function |
Provide a full list of possible theme templates used by this style. Overrides ViewsPluginInterface:: |
1 |
PluginBase:: |
public | function |
Unpack options over our existing defaults, drilling down into arrays
so that defaults don't get totally blown away. Overrides ViewsPluginInterface:: |
|
PluginBase:: |
public | function |
Returns the usesOptions property. Overrides ViewsPluginInterface:: |
8 |
PluginBase:: |
protected | function | Replaces Views' tokens in a given string. The resulting string will be sanitized with Xss::filterAdmin. | 1 |
PluginBase:: |
constant | Query string to indicate the site default language. | ||
PluginBase:: |
public | function |
Constructs a PluginBase object. Overrides PluginBase:: |
|
RssFields:: |
protected | property |
Does the style plugin support grouping of rows. Overrides StylePluginBase:: |
|
RssFields:: |
protected | property |
Does the style plugin for itself support to add fields to it's output. Overrides StylePluginBase:: |
|
RssFields:: |
public | function | ||
RssFields:: |
public | function |
Provide a form to edit options for this plugin. Overrides StylePluginBase:: |
|
RssFields:: |
protected | function |
Information about options for all kinds of purposes will be held here. Overrides StylePluginBase:: |
|
RssFields:: |
protected | function | Return an array of additional XHTML elements to add to the channel. | |
RssFields:: |
public | function | Get RSS feed description. | |
RssFields:: |
protected | function | ||
RssFields:: |
public | function |
Render the display in this style. Overrides StylePluginBase:: |
|
RssFields:: |
public | function |
Handle any special handling on the validate form. Overrides PluginBase:: |
|
RssFields:: |
public | function |
Validate that the plugin is correct and can be saved. Overrides StylePluginBase:: |
|
RssFields:: |
public | function |
Validate the options form. Overrides StylePluginBase:: |
|
StringTranslationTrait:: |
protected | property | The string translation service. | 1 |
StringTranslationTrait:: |
protected | function | Formats a string containing a count of items. | |
StringTranslationTrait:: |
protected | function | Returns the number of plurals supported by a given language. | |
StringTranslationTrait:: |
protected | function | Gets the string translation service. | |
StringTranslationTrait:: |
public | function | Sets the string translation service to use. | 2 |
StringTranslationTrait:: |
protected | function | Translates a string to the current language or to a given language. | |
StylePluginBase:: |
protected | property | Should field labels be enabled by default. | 1 |
StylePluginBase:: |
protected | property | The theme function used to render the grouping set. | |
StylePluginBase:: |
protected | property | Stores the rendered field values, keyed by the row index and field name. | |
StylePluginBase:: |
protected | property | Store all available tokens row rows. | |
StylePluginBase:: |
protected | property | Does the style plugin for itself support to add fields to its output. | 3 |
StylePluginBase:: |
protected | property |
Denotes whether the plugin has an additional options form. Overrides PluginBase:: |
|
StylePluginBase:: |
protected | property | Does the style plugin support custom css class for the rows. | 3 |
StylePluginBase:: |
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:: |
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:: |
public | function | Return TRUE if this style enables field labels by default. | 1 |
StylePluginBase:: |
public | function |
Clears a plugin. Overrides PluginBase:: |
|
StylePluginBase:: |
public | function | #pre_render callback for view row field rendering. | |
StylePluginBase:: |
public | function | Should the output of the style plugin be rendered even if it's a empty view. | 2 |
StylePluginBase:: |
public | function | Gets a rendered field. | |
StylePluginBase:: |
public | function | Get the raw field value. | |
StylePluginBase:: |
public | function | Return the token replaced row class for the specified row. | |
StylePluginBase:: |
public | function |
Overrides \Drupal\views\Plugin\views\PluginBase::init(). Overrides PluginBase:: |
|
StylePluginBase:: |
public | function | Allow the style to do stuff before each row is rendered. | |
StylePluginBase:: |
public | function |
Add anything to the query that we might need to. Overrides PluginBase:: |
1 |
StylePluginBase:: |
protected | function | Renders all of the fields for a given style and store them on the object. | |
StylePluginBase:: |
public | function | Group records as needed for rendering. | |
StylePluginBase:: |
public | function | Render the grouping sets. | |
StylePluginBase:: |
protected | function | Renders a group of rows of the grouped view. | |
StylePluginBase:: |
public | function | Take a value and apply token replacement logic to it. | |
StylePluginBase:: |
public static | function |
Lists the trusted callbacks provided by the implementing class. Overrides PluginBase:: |
|
StylePluginBase:: |
public | function | Return TRUE if this style also uses fields. | 3 |
StylePluginBase:: |
public | function | Returns the usesGrouping property. | 3 |
StylePluginBase:: |
public | function | Returns the usesRowClass property. | 3 |
StylePluginBase:: |
public | function | Returns the usesRowPlugin property. | 10 |
StylePluginBase:: |
public | function | Return TRUE if this style uses tokens. | |
StylePluginBase:: |
public | function | Provide a form in the views wizard if this style is selected. | |
StylePluginBase:: |
public | function | Alter the options of a display before they are added to the view. | 1 |
TrustedCallbackInterface:: |
constant | Untrusted callbacks throw exceptions. | ||
TrustedCallbackInterface:: |
constant | Untrusted callbacks trigger silenced E_USER_DEPRECATION errors. | ||
TrustedCallbackInterface:: |
constant | Untrusted callbacks trigger E_USER_WARNING errors. |