Issue #2261425 by ParisLiakos, alexpott: Streamline aggregator's entities...

Issue #2261425 by ParisLiakos, alexpott: Streamline aggregator's entities rendering with rest of core.

core/config/schema/core.entity.schema.yml

@@ -244,3 +244,23 @@ entity_view_display.field.number_unformatted:
       label: 'Settings'
       sequence:
         - type: string
+
+entity_view_display.field.uri_link:
+  type: entity_field_view_display_base
+  label: 'URI as link display format settings'
+  mapping:
+    settings:
+      type: sequence
+      label: 'Settings'
+      sequence:
+        - type: string
+
+entity_view_display.field.timestamp_ago:
+  type: entity_field_view_display_base
+  label: 'Timestamp ago display format settings'
+  mapping:
+    settings:
+      type: sequence
+      label: 'Settings'
+      sequence:
+        - type: string

core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/TimestampAgoFormatter.php

+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\Field\Plugin\Field\FieldFormatter\TimestampAgoFormatter.
+ */
+
+namespace Drupal\Core\Field\Plugin\Field\FieldFormatter;
+
+use Drupal\Core\Datetime\DateFormatter;
+use Drupal\Core\Field\FieldDefinitionInterface;
+use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\Core\Field\FormatterBase;
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Plugin implementation of the 'timestamp' formatter as time ago.
+ *
+ * @FieldFormatter(
+ *   id = "timestamp_ago",
+ *   label = @Translation("Time ago"),
+ *   field_types = {
+ *     "timestamp",
+ *     "created",
+ *     "updated",
+ *   }
+ * )
+ */
+class TimestampAgoFormatter extends FormatterBase implements ContainerFactoryPluginInterface {
+
+  /**
+   * The date formatter service.
+   *
+   * @var \Drupal\Core\Datetime\DateFormatter
+   */
+  protected $dateFormatter;
+
+  /**
+   * Constructs a TimestampAgoFormatter object.
+   *
+   * @param string $plugin_id
+   *   The plugin_id for the formatter.
+   * @param mixed $plugin_definition
+   *   The plugin implementation definition.
+   * @param \Drupal\Core\Field\FieldDefinitionInterface $field_definition
+   *   The definition of the field to which the formatter is associated.
+   * @param array $settings
+   *   The formatter settings.
+   * @param string $label
+   *   The formatter label display setting.
+   * @param string $view_mode
+   *   The view mode.
+   * @param array $third_party_settings
+   *   Any third party settings settings.
+   * @param \Drupal\Core\Datetime\DateFormatter $date_formatter
+   *   The date formatter service.
+   */
+  public function __construct($plugin_id, $plugin_definition, FieldDefinitionInterface $field_definition, array $settings, $label, $view_mode, array $third_party_settings, DateFormatter $date_formatter) {
+    parent::__construct($plugin_id, $plugin_definition, $field_definition, $settings, $label, $view_mode, $third_party_settings);
+
+    $this->dateFormatter = $date_formatter;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    // @see \Drupal\Core\Field\FormatterPluginManager::createInstance().
+    return new static(
+      $plugin_id,
+      $plugin_definition,
+      $configuration['field_definition'],
+      $configuration['settings'],
+      $configuration['label'],
+      $configuration['view_mode'],
+      $configuration['third_party_settings'],
+      $container->get('date.formatter')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function viewElements(FieldItemListInterface $items) {
+    $elements = array();
+
+    foreach ($items as $delta => $item) {
+      if ($item->value) {
+        $updated = $this->t('@time ago', array('@time' => $this->dateFormatter->formatInterval(REQUEST_TIME - $item->value)));
+      }
+      else {
+        $updated = $this->t('never');
+      }
+
+      $elements[$delta] = array('#markup' => $updated);
+    }
+
+    return $elements;
+  }
+
+}

core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/UriLinkFormatter.php

+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\Field\Plugin\Field\FieldFormatter\UriLinkFormatter.
+ */
+
+namespace Drupal\Core\Field\Plugin\Field\FieldFormatter;
+
+use Drupal\Core\Field\FormatterBase;
+use Drupal\Core\Field\FieldItemListInterface;
+
+/**
+ * Plugin implementation of the 'uri_link' formatter.
+ *
+ * @FieldFormatter(
+ *   id = "uri_link",
+ *   label = @Translation("Link to URI"),
+ *   field_types = {
+ *     "uri",
+ *   }
+ * )
+ */
+class UriLinkFormatter extends FormatterBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function viewElements(FieldItemListInterface $items) {
+    $elements = array();
+
+    foreach ($items as $delta => $item) {
+      $elements[$delta] = array(
+        '#type' => 'link',
+        '#href' => $item->value,
+        '#title' => $item->value,
+      );
+    }
+
+    return $elements;
+  }
+
+}

core/lib/Drupal/Core/Field/Plugin/Field/FieldType/UriItem.php

@@ -21,7 +21,8 @@
  *   id = "uri",
  *   label = @Translation("URI"),
  *   description = @Translation("An entity field containing a URI."),
- *   no_ui = TRUE
+ *   no_ui = TRUE,
+ *   default_formatter = "uri_link",
  * )
  */
 class UriItem extends StringItem {

core/modules/aggregator/aggregator.module

@@ -56,28 +56,18 @@ function aggregator_help($route_name, RouteMatchInterface $route_match) {
  */
 function aggregator_theme() {
   return array(
-    'aggregator_feed_source' => array(
-      'variables' => array('aggregator_feed' => NULL, 'view_mode' => NULL),
+    'aggregator_feed' => array(
+      'render element' => 'elements',
       'file' => 'aggregator.theme.inc',
-      'template' => 'aggregator-feed-source',
+      'template' => 'aggregator-feed',
     ),
     'aggregator_block_item' => array(
       'variables' => array('item' => NULL, 'feed' => 0),
       'file' => 'aggregator.theme.inc',
       'template' => 'aggregator-block-item',
     ),
-    'aggregator_summary_items' => array(
-      'variables' => array('summary_items' => NULL, 'source' => NULL),
-      'file' => 'aggregator.theme.inc',
-      'template' => 'aggregator-summary-items',
-    ),
-    'aggregator_summary_item' => array(
-      'variables' => array('aggregator_item' => NULL, 'view_mode' => NULL),
-      'file' => 'aggregator.theme.inc',
-      'template' => 'aggregator-summary-item',
-    ),
     'aggregator_item' => array(
-      'variables' => array('aggregator_item' => NULL, 'view_mode' => NULL),
+      'render element' => 'elements',
       'file' => 'aggregator.theme.inc',
       'template' => 'aggregator-item',
     ),
@@ -85,11 +75,59 @@ function aggregator_theme() {
       'variables' => array('feeds' => NULL),
       'file' => 'aggregator.theme.inc',
     ),
-    'aggregator_page_rss' => array(
-      'variables' => array('feeds' => NULL),
-      'file' => 'aggregator.theme.inc',
+  );
+}
+
+/**
+ * Implements hook_entity_extra_field_info().
+ */
+function aggregator_entity_extra_field_info() {
+  $extra = array();
+
+  $extra['aggregator_feed']['aggregator_feed'] = array(
+    'display' => array(
+      'items' => array(
+        'label' => t('Items'),
+        'description' => t('Items associated with this feed'),
+        'weight' => 0,
+      ),
+      // @todo Move to a formatter at https://www.drupal.org/node/2339917.
+      'image' => array(
+        'label' => t('Image'),
+        'description' => t('The feed image'),
+        'weight' => 2,
+      ),
+      // @todo Move to a formatter at https://drupal.org/node/2149845.
+      'description' => array(
+        'label' => t('Description'),
+        'description' => t('The description of this feed'),
+        'weight' => 3,
+      ),
+      'more_link' => array(
+        'label' => t('More link'),
+        'description' => t('A more link to the feed detail page'),
+        'weight' => 5,
+      ),
+      'feed_icon' => array(
+        'label' => t('Feed icon'),
+        'description' => t('An icon that links to the feed url'),
+        'weight' => 6,
+      ),
     ),
   );
+
+  $extra['aggregator_item']['aggregator_item'] = array(
+    'display' => array(
+      // @todo Move to a formatter at https://drupal.org/node/2149845.
+      'description' => array(
+        'label' => t('Description'),
+        'description' => t('The description of this feed item'),
+        'weight' => 2,
+      ),
+    ),
+  );
+
+  return $extra;
 }
 
 /**

core/modules/aggregator/aggregator.routing.yml

@@ -52,7 +52,7 @@ aggregator.feed_add:
 entity.aggregator_feed.canonical:
   path: '/aggregator/sources/{aggregator_feed}'
   defaults:
-    _content: '\Drupal\aggregator\Controller\AggregatorController::viewFeed'
+    _entity_view: 'aggregator_feed'
     _title_callback: '\Drupal\aggregator\Controller\AggregatorController::feedTitle'
   requirements:
     _permission: 'access news feeds'

core/modules/aggregator/aggregator.theme.inc

@@ -15,31 +15,18 @@
  *
  * @param array $variables
  *   An associative array containing:
- *   - aggregator_item: An individual feed item for display on the aggregator
- *     page.
+ *   - elements: An array of elements to display in view mode.
  */
 function template_preprocess_aggregator_item(&$variables) {
-  $item = $variables['aggregator_item'];
+  $item = $variables['elements']['#aggregator_item'];
 
-  $variables['feed_url'] = check_url($item->getLink());
-  $variables['feed_title'] = String::checkPlain($item->getTitle());
-  $variables['content'] = aggregator_filter_xss($item->getDescription());
-
-  $variables['source_url'] = '';
-  $variables['source_title'] = '';
-  $fid = $item->getFeedId();
-  if (isset($item->ftitle) && $fid !== NULL) {
-    $variables['source_url'] = url('aggregator/sources/' . $fid);
-    $variables['source_title'] = String::checkPlain($item->ftitle);
-  }
-  if (date('Ymd', $item->getPostedTime()) == date('Ymd')) {
-    $variables['source_date'] = t('%ago ago', array('%ago' => \Drupal::service('date.formatter')->formatInterval(REQUEST_TIME - $item->getPostedTime())));
-  }
-  else {
-    $variables['source_date'] = format_date($item->getPostedTime(), 'medium');
+  // Helpful $content variable for templates.
+  foreach (Element::children($variables['elements']) as $key) {
+    $variables['content'][$key] = $variables['elements'][$key];
   }
 
-  $variables['attributes']['class'][] = 'feed-item';
+  $variables['url'] = check_url($item->getLink());
+  $variables['title'] = String::checkPlain($item->label());
 }
 
 /**
@@ -74,104 +61,23 @@ function theme_aggregator_page_opml($variables) {
 }
 
 /**
- * Prepares variables for aggregator summary templates.
- *
- * Default template: aggregator-summary-items.html.twig.
- *
- * @param array $variables
- *   An associative array containing:
- *   - source: A Drupal\aggregator\FeedInterface object representing the feed
- *     source.
- *   - summary_items: An array of feed items.
- */
-function template_preprocess_aggregator_summary_items(&$variables) {
-  $variables['title'] = String::checkPlain($variables['source']->label());
-  $summary_items = array();
-  foreach (Element::children($variables['summary_items']) as $key) {
-    $summary_items[] = $variables['summary_items'][$key];
-  }
-  $variables['summary_list'] = array(
-    '#theme' => 'item_list',
-    '#items' => $summary_items,
-  );
-  $variables['source_url'] = $variables['source']->getUrl();
-}
-
-/**
- * Processes variables for aggregator summary item templates.
+ * Prepares variables for aggregator feed templates.
  *
- * Default template: aggregator-summary-item.html.twig.
+ * Default template: aggregator-feed.html.twig.
  *
  * @param array $variables
  *   An associative array containing:
- *   - aggregator_item: The feed item.
- *   - view_mode: How the item is being displayed.
+ *   - elements: An array of elements to display in view mode.
  */
-function template_preprocess_aggregator_summary_item(&$variables) {
-  $item = $variables['aggregator_item'];
-
-  $variables['url'] = l(String::checkPlain($item->label()), check_url(url($item->getLink(), array('absolute' => TRUE))), array(
-    'attributes' => array(
-      'class' => array('feed-item-url'),
-    ),
-  ));
-  $variables['age'] = array(
-    '#theme' => 'time',
-    '#attributes' => array(
-      'datetime' => format_date($item->getPostedTime(), 'html_datetime', '', 'UTC'),
-      'class' => array('feed-item-age',),
-    ),
-    '#text' => t('%age old', array('%age' => \Drupal::service('date.formatter')->formatInterval(REQUEST_TIME - $item->getPostedTime()))),
-    '#html' => TRUE,
-  );
-}
+function template_preprocess_aggregator_feed(&$variables) {
+  $feed = $variables['elements']['#aggregator_feed'];
 
-/**
- * Prepares variables for aggregator feed source templates.
- *
- * Default template: aggregator-feed-source.html.twig.
- *
- * @param array $variables
- *   An associative array containing:
- *   - aggregator_feed: A Drupal\aggregator\FeedInterface object representing
- *     the feed source.
- */
-function template_preprocess_aggregator_feed_source(&$variables) {
-  $feed = $variables['aggregator_feed'];
-
-  $feed_icon = array(
-    '#theme' => 'feed_icon',
-    '#url' => $feed->getUrl(),
-    '#title' => t('!title feed', array('!title' => $feed->label())),
-  );
-  $variables['source_icon'] = drupal_render($feed_icon);
-
-  if ($feed->getImage() && $feed->label() && $feed->getWebsiteUrl()) {
-    $image = array(
-      '#theme' => 'image',
-      '#path' => $feed->getImage(),
-      '#alt' => $feed->label(),
-    );
-    $variables['source_image'] = l($image, $feed->getWebsiteUrl(), array('html' => TRUE, 'attributes' => array('class' => 'feed-image')));
+  // Helpful $content variable for templates.
+  foreach (Element::children($variables['elements']) as $key) {
+    $variables['content'][$key] = $variables['elements'][$key];
   }
-  else {
-    $variables['source_image'] = '';
-  }
-  $variables['source_description'] = aggregator_filter_xss($feed->getDescription());
-  $variables['source_url'] = check_url(url($feed->getWebsiteUrl(), array('absolute' => TRUE)));
-
-  if ($feed->checked) {
-    $variables['last_checked'] = t('@time ago', array('@time' => \Drupal::service('date.formatter')->formatInterval(REQUEST_TIME - $feed->getLastCheckedTime())));
-  }
-  else {
-    $variables['last_checked'] = t('never');
-  }
-
-  if (\Drupal::currentUser()->hasPermission('administer news feeds')) {
-    $variables['last_checked'] = l($variables['last_checked'], 'admin/config/services/aggregator');
-  }
-
-  $variables['attributes']['class'][] = 'feed-source';
+  $variables['full'] = $variables['elements']['#view_mode'] == 'full';
+  $variables['title'] = String::checkPlain($feed->label());
 }
 
 /**

core/modules/aggregator/config/install/core.entity_view_display.aggregator_feed.aggregator_feed.default.yml

+id: aggregator_feed.aggregator_feed.default
+targetEntityType: aggregator_feed
+bundle: aggregator_feed
+mode: default
+status: true
+content:
+  items:
+    weight: 0
+  checked:
+    type: timestamp_ago
+    weight: 1
+    settings: {  }
+    third_party_settings: {  }
+    label: inline
+  image:
+    weight: 2
+  description:
+    weight: 3
+  link:
+    type: uri_link
+    weight: 4
+    settings: {  }
+    third_party_settings: {  }
+    label: inline
+  feed_icon:
+    weight: 5
+hidden:
+  more_link: true
+dependencies:
+  module:
+    - aggregator

core/modules/aggregator/config/install/core.entity_view_display.aggregator_feed.aggregator_feed.summary.yml

+id: aggregator_feed.aggregator_feed.summary
+targetEntityType: aggregator_feed
+bundle: aggregator_feed
+mode: summary
+status: true
+content:
+  items:
+    weight: 0
+  more_link:
+    weight: 1
+hidden:
+  link: true
+  checked: true
+  description: true
+  image: true
+  feed_icon: true
+status: true
+dependencies:
+  entity:
+    - core.entity_view_mode.aggregator_feed.summary
+  module:
+    - aggregator

core/modules/aggregator/config/install/core.entity_view_display.aggregator_item.aggregator_item.summary.yml

+id: aggregator_item.aggregator_item.summary
+targetEntityType: aggregator_item
+bundle: aggregator_item
+mode: summary
+status: true
+content:
+  timestamp:
+    weight: 0
+hidden:
+  link: true
+  author: true
+  feed: true
+  description: true
+status: true
+dependencies:
+  entity:
+    - core.entity_view_mode.aggregator_item.summary
+  module:
+    - aggregator
+    - entity_reference

core/modules/aggregator/config/install/core.entity_view_mode.aggregator_feed.summary.yml

+id: aggregator_feed.summary
+label: Summary
+status: true
+cache: true
+targetEntityType: aggregator_feed
+dependencies:
+  module:
+    - aggregator

core/modules/aggregator/src/Controller/AggregatorController.php

@@ -60,26 +60,6 @@ public function feedAdd() {
     return $this->entityFormBuilder()->getForm($feed);
   }
 
-  /**
-   * Displays all the items captured from the particular feed.
-   *
-   * @param \Drupal\aggregator\FeedInterface $aggregator_feed
-   *   The feed for which to display all items.
-   *
-   * @return array
-   *   The rendered list of items for the feed.
-   */
-  public function viewFeed(FeedInterface $aggregator_feed) {
-    $entity_manager = $this->entityManager();
-    $feed_source = $entity_manager->getViewBuilder('aggregator_feed')
-      ->view($aggregator_feed, 'default');
-    // Load aggregator feed item for the particular feed id.
-    $items = $entity_manager->getStorage('aggregator_item')->loadByFeed($aggregator_feed->id(), 20);
-    // Print the feed items.
-    $build = $this->buildPageList($items, $feed_source);
-    return $build;
-  }
-
   /**
    * Builds a listing of aggregator feed items.
    *
@@ -210,35 +190,8 @@ public function sources() {
 
     $feeds = $entity_manager->getStorage('aggregator_feed')->loadMultiple();
 
-    $build = array(
-      '#type' => 'container',
-      '#attributes' => array('class' => array('aggregator-wrapper')),
-      '#sorted' => TRUE,
-    );
-
-    foreach ($feeds as $feed) {
-      // Most recent items:
-      $summary_items = array();
-      $aggregator_summary_items = $this->config('aggregator.settings')
-        ->get('source.list_max');
-      if ($aggregator_summary_items) {
-        $items = $entity_manager->getStorage('aggregator_item')
-          ->loadByFeed($feed->id(), 20);
-        if ($items) {
-          $summary_items = $entity_manager->getViewBuilder('aggregator_item')
-            ->viewMultiple($items, 'summary');
-        }
-      }
-      $feed->url = $this->url('entity.aggregator_feed.canonical', array('aggregator_feed' => $feed->id()));
-      $build[$feed->id()] = array(
-        '#theme' => 'aggregator_summary_items',
-        '#summary_items' => $summary_items,
-        '#source' => $feed,
-        '#cache' => array(
-          'tags' => $feed->getCacheTag(),
-