function views_atom_rules_action_add_to_feed in Views Atom 7

Same name and namespace in other branches

1. 6 views_atom.rules.inc \views_atom_rules_action_add_to_feed()

Rule implementation callback for adding a node to a feed.

Parameters

$data: A wrapped Drupal entity

$views_diplay: A concatenation of views name and display id

1 string reference to 'views_atom_rules_action_add_to_feed'

views_atom_rules_action_info in ./views_atom.rules.inc

Implements hook_rules_action_info().

File

./views_atom.rules.inc, line 137

Code

function views_atom_rules_action_add_to_feed($data, $views_display, $settings, RulesState $state, RulesPlugin $element) {

  // @todo, ideally this rules_action would go in push_hub or a more generic atom module.
  if (module_exists('push_hub')) {

    // @todo, revisit this variable name.
    // There is inconsistency between plural and singular because it is unclear
    // if a rule should only deal with a single display or n displays.
    $views_displays = $views_display;

    // @todo, question whether Views is necessary at all for the atomization.
    // parts of render() inside of views_plugin_row_rdf_node could be abstracted out.
    $nid = $data
      ->getIdentifier();
    foreach ($views_displays as $view_name_and_display) {
      list($view_name, $view_display_name) = explode('-', $view_name_and_display);
      $view = views_get_view($view_name);
      $view
        ->set_display($view_display_name);
      if ($view
        ->access($view_display_name)) {

        // Set this version of the node object on the View so it can be accessed by views_plugin_row_rdf_node.inc
        // @todo, This is somewhat of a hack and should be replaced by a proper external atom libary.
        $node = $data
          ->value();
        $view->views_atom_nodes = array(
          $nid => $node,
        );

        // Get the atom-formatted-data for this node.
        $result = $view
          ->preview($view_display_name, array(
          $nid,
        ));

        // Only PuSH the feed if there is actual data.  The view may have filtered
        // our nids down to 0, in which case we don't want to send anything. Because
        // normal View requests (Pull-based) are unaffected, Atom subscriptions still
        // work as normal.
        if (!empty($view->result)) {

          // @todo, make aliasing configurable.
          // Note the confusing alias flag. TRUE means "this has already been aliased,
          // which is the way to prevent url from trying to find an alia.
          $topic_url = url($view
            ->get_url(), array(
            'absolute' => TRUE,
            'alias' => TRUE,
          ));

          // @todo, make a send_mode configurable?
          push_hub_notify($topic_url, $result, PUSH_HUB_IMMEDIATE | PUSH_HUB_CRON);
        }
      }
    }
  }
}