/**
* Returns a list of anonforum discussions as well as a summary of the discussion
* in a provided list of anonforums.
*
* @param array $anonforumids the anonforum ids
* @return array the anonforum discussion details
* @since Moodle 2.5
*/
public static function get_anonforum_discussions($anonforumids)
{
global $CFG, $DB, $USER;
require_once $CFG->dirroot . "/mod/anonforum/lib.php";
// Validate the parameter.
$params = self::validate_parameters(self::get_anonforum_discussions_parameters(), array('anonforumids' => $anonforumids));
$anonforumids = $params['anonforumids'];
// Array to store the anonymous forum discussions to return.
$arrdiscussions = array();
// Keep track of the course ids we have performed a require_course_login check on to avoid repeating.
$arrcourseschecked = array();
// Store the modinfo for the anonymous forums in an individual courses.
$arrcoursesanonforuminfo = array();
// Keep track of the users we have looked up in the DB.
$arrusers = array();
// Loop through them.
foreach ($anonforumids as $id) {
// Get the anonymous forum object.
$anonforum = $DB->get_record('anonforum', array('id' => $id), '*', MUST_EXIST);
// Check that that user can view this course if check not performed yet.
if (!in_array($anonforum->course, $arrcourseschecked)) {
// Check the user can function in this context.
self::validate_context(context_course::instance($anonforum->course));
// Add to the array.
$arrcourseschecked[] = $anonforum->course;
}
// Get the modinfo for the course if we haven't already.
if (!isset($arrcoursesanonforuminfo[$anonforum->course])) {
$modinfo = get_fast_modinfo($anonforum->course);
$arrcoursesanonforuminfo[$anonforum->course] = $modinfo->get_instances_of('anonforum');
}
// Check if this anonymous forum does not exist in the modinfo array, should always be false unless DB is borked.
if (empty($arrcoursesanonforuminfo[$anonforum->course][$anonforum->id])) {
throw new moodle_exception('invalidmodule', 'error');
}
// We now have the course module.
$cm = $arrcoursesanonforuminfo[$anonforum->course][$anonforum->id];
// If the anonymous forum is not visible throw an exception.
if (!$cm->uservisible) {
throw new moodle_exception('nopermissiontoshow', 'error');
}
// Get the module context.
$modcontext = context_module::instance($cm->id);
// Check they have the view anonymous forum capability.
require_capability('mod/anonforum:viewdiscussion', $modcontext);
// Check if they can view full names.
$canviewfullname = has_capability('moodle/site:viewfullnames', $modcontext);
// Get the unreads array, this takes a anonymous forum id and returns data for all discussions.
$unreads = array();
if ($cantrack = anonforum_tp_can_track_anonforums($anonforum)) {
if ($anonforumtracked = anonforum_tp_is_tracked($anonforum)) {
$unreads = anonforum_get_discussions_unread($cm);
}
}
// The anonforum function returns the replies for all the discussions in a given anonymous forum.
$replies = anonforum_count_discussion_replies($id);
// Get the discussions for this anonymous forum.
if ($discussions = $DB->get_records('anonforum_discussions', array('anonforum' => $id))) {
foreach ($discussions as $discussion) {
// If the anonymous forum is of type qanda and the user has not posted in the discussion
// we need to ensure that they have the required capability.
if ($anonforum->type == 'qanda' && !anonforum_user_has_posted($discussion->anonforum, $discussion->id, $USER->id)) {
require_capability('mod/anonforum:viewqandawithoutposting', $modcontext);
}
$usernamefields = user_picture::fields();
// If we don't have the users details then perform DB call.
if (empty($arrusers[$discussion->userid])) {
$arrusers[$discussion->userid] = $DB->get_record('user', array('id' => $discussion->userid), $usernamefields, MUST_EXIST);
}
// Get the subject.
$subject = $DB->get_field('anonforum_posts', 'subject', array('id' => $discussion->firstpost), MUST_EXIST);
// Create object to return.
$return = new stdClass();
$return->id = (int) $discussion->id;
$return->course = $discussion->course;
$return->anonforum = $discussion->anonforum;
$return->name = $discussion->name;
$return->userid = $discussion->userid;
$return->groupid = $discussion->groupid;
$return->assessed = $discussion->assessed;
$return->timemodified = (int) $discussion->timemodified;
$return->usermodified = $discussion->usermodified;
$return->timestart = $discussion->timestart;
$return->timeend = $discussion->timeend;
$return->firstpost = (int) $discussion->firstpost;
$return->firstuserfullname = fullname($arrusers[$discussion->userid], $canviewfullname);
$return->firstuserimagealt = $arrusers[$discussion->userid]->imagealt;
$return->firstuserpicture = $arrusers[$discussion->userid]->picture;
$return->firstuseremail = $arrusers[$discussion->userid]->email;
$return->subject = $subject;
$return->numunread = '';
if ($cantrack && $anonforumtracked) {
if (isset($unreads[$discussion->id])) {
$return->numunread = (int) $unreads[$discussion->id];
}
}
// Check if there are any replies to this discussion.
if (!empty($replies[$discussion->id])) {
$return->numreplies = (int) $replies[$discussion->id]->replies;
$return->lastpost = (int) $replies[$discussion->id]->lastpostid;
} else {
// No replies, so the last post will be the first post.
$return->numreplies = 0;
$return->lastpost = (int) $discussion->firstpost;
}
// Get the last post as well as the user who made it.
$lastpost = $DB->get_record('anonforum_posts', array('id' => $return->lastpost), '*', MUST_EXIST);
if (empty($arrusers[$lastpost->userid])) {
$arrusers[$lastpost->userid] = $DB->get_record('user', array('id' => $lastpost->userid), $usernamefields, MUST_EXIST);
}
$return->lastuserid = $lastpost->userid;
$return->lastuserfullname = fullname($arrusers[$lastpost->userid], $canviewfullname);
$return->lastuserimagealt = $arrusers[$lastpost->userid]->imagealt;
$return->lastuserpicture = $arrusers[$lastpost->userid]->picture;
$return->lastuseremail = $arrusers[$lastpost->userid]->email;
// Add the discussion statistics to the array to return.
$arrdiscussions[$return->id] = (array) $return;
}
}
}
return $arrdiscussions;
}
/**
* Prints the discussion view screen for a anonforum.
*
* @global object
* @global object
* @param object $course The current course object.
* @param object $anonforum Forum to be printed.
* @param int $maxdiscussions .
* @param string $displayformat The display format to use (optional).
* @param string $sort Sort arguments for database query (optional).
* @param int $groupmode Group mode of the anonforum (optional).
* @param void $unused (originally current group)
* @param int $page Page mode, page to display (optional).
* @param int $perpage The maximum number of discussions per page(optional)
*
*/
function anonforum_print_latest_discussions($course, $anonforum, $maxdiscussions = -1, $displayformat = 'plain', $sort = '', $currentgroup = -1, $groupmode = -1, $page = -1, $perpage = 100, $cm = NULL)
{
global $CFG, $USER, $OUTPUT;
if (!$cm) {
if (!($cm = get_coursemodule_from_instance('anonforum', $anonforum->id, $anonforum->course))) {
print_error('invalidcoursemodule');
}
}
$context = context_module::instance($cm->id);
if (empty($sort)) {
$sort = "d.timemodified DESC";
}
$olddiscussionlink = false;
// Sort out some defaults
if ($perpage <= 0) {
$perpage = 0;
$page = -1;
}
if ($maxdiscussions == 0) {
// all discussions - backwards compatibility
$page = -1;
$perpage = 0;
if ($displayformat == 'plain') {
$displayformat = 'header';
// Abbreviate display by default
}
} else {
if ($maxdiscussions > 0) {
$page = -1;
$perpage = $maxdiscussions;
}
}
$fullpost = false;
if ($displayformat == 'plain') {
$fullpost = true;
}
// Decide if current user is allowed to see ALL the current discussions or not
// First check the group stuff
if ($currentgroup == -1 or $groupmode == -1) {
$groupmode = groups_get_activity_groupmode($cm, $course);
$currentgroup = groups_get_activity_group($cm);
}
$groups = array();
//cache
// If the user can post discussions, then this is a good place to put the
// button for it. We do not show the button if we are showing site news
// and the current user is a guest.
$canstart = anonforum_user_can_post_discussion($anonforum, $currentgroup, $groupmode, $cm, $context);
if (!$canstart and $anonforum->type !== 'news') {
if (isguestuser() or !isloggedin()) {
$canstart = true;
}
if (!is_enrolled($context) and !is_viewing($context)) {
// allow guests and not-logged-in to see the button - they are prompted to log in after clicking the link
// normal users with temporary guest access see this button too, they are asked to enrol instead
// do not show the button to users with suspended enrolments here
$canstart = enrol_selfenrol_available($course->id);
}
}
if ($canstart) {
echo '<div class="singlebutton anonforumaddnew">';
echo "<form id=\"newdiscussionform\" method=\"get\" action=\"{$CFG->wwwroot}/mod/anonforum/post.php\">";
echo '<div>';
echo "<input type=\"hidden\" name=\"anonforum\" value=\"{$anonforum->id}\" />";
switch ($anonforum->type) {
case 'news':
case 'blog':
$buttonadd = get_string('addanewtopic', 'anonforum');
break;
case 'qanda':
$buttonadd = get_string('addanewquestion', 'anonforum');
break;
default:
$buttonadd = get_string('addanewdiscussion', 'anonforum');
break;
}
echo '<input type="submit" value="' . $buttonadd . '" />';
echo '</div>';
echo '</form>';
echo "</div>\n";
} else {
if (isguestuser() or !isloggedin() or $anonforum->type == 'news') {
// no button and no info
} else {
if ($groupmode and has_capability('mod/anonforum:startdiscussion', $context)) {
// inform users why they can not post new discussion
if ($currentgroup) {
echo $OUTPUT->notification(get_string('cannotadddiscussion', 'anonforum'));
} else {
echo $OUTPUT->notification(get_string('cannotadddiscussionall', 'anonforum'));
}
}
}
}
// Get all the recent discussions we're allowed to see
$getuserlastmodified = $displayformat == 'header';
if (!($discussions = anonforum_get_discussions($cm, $sort, $fullpost, null, $maxdiscussions, $getuserlastmodified, $page, $perpage))) {
echo '<div class="anonforumnodiscuss">';
if ($anonforum->type == 'news') {
echo '(' . get_string('nonews', 'anonforum') . ')';
} else {
if ($anonforum->type == 'qanda') {
echo '(' . get_string('noquestions', 'anonforum') . ')';
} else {
echo '(' . get_string('nodiscussions', 'anonforum') . ')';
}
}
echo "</div>\n";
return;
}
// If we want paging
if ($page != -1) {
///Get the number of discussions found
$numdiscussions = anonforum_get_discussions_count($cm);
///Show the paging bar
echo $OUTPUT->paging_bar($numdiscussions, $page, $perpage, "view.php?f={$anonforum->id}");
if ($numdiscussions > 1000) {
// saves some memory on sites with very large anonymous forums
$replies = anonforum_count_discussion_replies($anonforum->id, $sort, $maxdiscussions, $page, $perpage);
} else {
$replies = anonforum_count_discussion_replies($anonforum->id);
}
} else {
$replies = anonforum_count_discussion_replies($anonforum->id);
if ($maxdiscussions > 0 and $maxdiscussions <= count($discussions)) {
$olddiscussionlink = true;
}
}
$canviewparticipants = has_capability('moodle/course:viewparticipants', $context);
$strdatestring = get_string('strftimerecentfull');
// Check if the anonymous forum is tracked.
if ($cantrack = anonforum_tp_can_track_anonforums($anonforum)) {
$anonforumtracked = anonforum_tp_is_tracked($anonforum);
} else {
$anonforumtracked = false;
}
if ($anonforumtracked) {
$unreads = anonforum_get_discussions_unread($cm);
} else {
$unreads = array();
}
if ($displayformat == 'header') {
echo '<table cellspacing="0" class="anonforumheaderlist">';
echo '<thead>';
echo '<tr>';
echo '<th class="header topic" scope="col">' . get_string('discussion', 'anonforum') . '</th>';
echo '<th class="header author" colspan="2" scope="col">' . get_string('startedby', 'anonforum') . '</th>';
if ($groupmode > 0) {
echo '<th class="header group" scope="col">' . get_string('group') . '</th>';
}
if (has_capability('mod/anonforum:viewdiscussion', $context)) {
echo '<th class="header replies" scope="col">' . get_string('replies', 'anonforum') . '</th>';
// If the anonymous forum can be tracked, display the unread column.
if ($cantrack) {
echo '<th class="header replies" scope="col">' . get_string('unread', 'anonforum');
if ($anonforumtracked) {
echo '<a title="' . get_string('markallread', 'anonforum') . '" href="' . $CFG->wwwroot . '/mod/anonforum/markposts.php?f=' . $anonforum->id . '&mark=read&returnpage=view.php">' . '<img src="' . $OUTPUT->pix_url('t/markasread') . '" class="iconsmall" alt="' . get_string('markallread', 'anonforum') . '" /></a>';
}
echo '</th>';
}
}
echo '<th class="header lastpost" scope="col">' . get_string('lastpost', 'anonforum') . '</th>';
echo '</tr>';
echo '</thead>';
echo '<tbody>';
}
foreach ($discussions as $discussion) {
if (!empty($replies[$discussion->discussion])) {
$discussion->replies = $replies[$discussion->discussion]->replies;
$discussion->lastpostid = $replies[$discussion->discussion]->lastpostid;
} else {
$discussion->replies = 0;
}
// SPECIAL CASE: The front page can display a news item post to non-logged in users.
// All posts are read in this case.
if (!$anonforumtracked) {
$discussion->unread = '-';
} else {
if (empty($USER)) {
$discussion->unread = 0;
} else {
if (empty($unreads[$discussion->discussion])) {
$discussion->unread = 0;
} else {
$discussion->unread = $unreads[$discussion->discussion];
}
}
}
if (isloggedin()) {
$ownpost = $discussion->userid == $USER->id;
} else {
$ownpost = false;
}
// Use discussion name instead of subject of first post
$discussion->subject = $discussion->name;
switch ($displayformat) {
case 'header':
if ($groupmode > 0) {
if (isset($groups[$discussion->groupid])) {
$group = $groups[$discussion->groupid];
} else {
$group = $groups[$discussion->groupid] = groups_get_group($discussion->groupid);
}
} else {
$group = -1;
}
anonforum_print_discussion_header($discussion, $anonforum, $group, $strdatestring, $cantrack, $anonforumtracked, $canviewparticipants, $context);
break;
default:
$link = false;
if ($discussion->replies) {
$link = true;
} else {
$modcontext = context_module::instance($cm->id);
$link = anonforum_user_can_see_discussion($anonforum, $discussion, $modcontext, $USER);
}
$discussion->anonforum = $anonforum->id;
anonforum_print_post($discussion, $discussion, $anonforum, $cm, $course, $ownpost, 0, $link, false, '', null, true, $anonforumtracked);
break;
}
}
if ($displayformat == "header") {
echo '</tbody>';
echo '</table>';
}
if ($olddiscussionlink) {
if ($anonforum->type == 'news') {
$strolder = get_string('oldertopics', 'anonforum');
} else {
$strolder = get_string('olderdiscussions', 'anonforum');
}
echo '<div class="anonforumolddiscuss">';
echo '<a href="' . $CFG->wwwroot . '/mod/anonforum/view.php?f=' . $anonforum->id . '&showall=1">';
echo $strolder . '</a> ...</div>';
}
if ($page != -1) {
///Show the paging bar
echo $OUTPUT->paging_bar($numdiscussions, $page, $perpage, "view.php?f={$anonforum->id}");
}
}
