/**
* Returns the rest resource of the stream regarding a stream a context-id and the parameters
* stream-time, limit and offset (all in $this).
*
* @param BlubberStream $stream : the stream
* @param $parameter : an array of context-parameter i.e. array('user_id' => $user_id)
*
* @return Array('collection' => array(...), 'pagination' => array())
*/
private function getStreamBlubberRestResource($stream, $parameter)
{
$total = $stream->fetchNumberOfThreads();
$threads = $stream->fetchThreads((int) $this->offset, (int) $this->limit ?: null, $this->stream_time ?: null);
$json = array();
foreach ($threads as $thread) {
$url = $this->urlf('/blubber/posting/%s', array($thread->getId()));
$json[$url] = $this->blubberPostingtoJSON($thread);
}
$this->etag(md5(serialize($json)));
return $this->paginated($json, $total, $parameter);
}
/**
* Displays more postings in the same stream (global, forum oder profile-stream).
* This action is used by infinity-scroll and displays a maximum of
* $this->max_threads threads.
* @throws AccessDeniedException
*/
public function more_postings_action()
{
$context_id = Request::option("context_id");
switch (Request::get("stream")) {
case "global":
$stream = BlubberStream::getGlobalStream();
break;
case "course":
$stream = BlubberStream::getCourseStream($context_id);
break;
case "profile":
$stream = BlubberStream::getProfileStream($context_id);
break;
case "custom":
$stream = new BlubberStream($context_id);
break;
}
$output = array();
$offset = $this->max_threads * Request::int("offset");
$limit = $this->max_threads + 1;
$stream_time = Request::int("stream_time");
$threads = $stream->fetchThreads($offset, $limit, $stream_time);
$output['more'] = count($threads) > $this->max_threads;
if ($output['more']) {
$threads = array_slice($threads, 0, $this->max_threads);
}
$output['threads'] = array();
$factory = new Flexi_TemplateFactory($this->plugin->getPluginPath() . "/views");
foreach ($threads as $posting) {
$template = $factory->open("streams/_blubber.php");
$template->set_attribute('thread', $posting);
$template->set_attribute('course_id', $_SESSION['SessionSeminar']);
$template->set_attribute('controller', $this);
$output['threads'][] = array('content' => $template->render(), 'discussion_time' => $posting['discussion_time'], 'mkdate' => $posting['mkdate'], 'posting_id' => $posting->getId());
}
$this->render_json($output);
}
