PHP get_and_set_current_group函数代码示例

 /**
  * Display the report.
  */
 public function display($game, $cm, $course)
 {
     global $CFG, $SESSION, $DB;
     // Define some strings.
     $strreallydel = addslashes(get_string('deleteattemptcheck', 'game'));
     $strtimeformat = get_string('strftimedatetime');
     $strreviewquestion = get_string('reviewresponse', 'quiz');
     // Only print headers if not asked to download data.
     if (!($download = optional_param('download', null))) {
         $this->print_header_and_tabs($cm, $course, $game, $reportmode = "overview");
     }
     // Deal with actions.
     $action = optional_param('action', '', PARAM_ACTION);
     switch ($action) {
         case 'delete':
             // Some attempts need to be deleted.
             $attemptids = optional_param('attemptid', array(), PARAM_INT);
             foreach ($attemptids as $attemptid) {
                 if ($attemptid && ($todelete = get_record('game_attempts', 'id', $attemptid))) {
                     delete_records('game_attempts', 'id', $attemptid);
                     delete_records('game_queries', 'attemptid', $attemptid);
                     // Search game_attempts for other instances by this user.
                     // If none, then delete record for this game, this user from game_grades.
                     // else recalculate best grade.
                     $userid = $todelete->userid;
                     if (!record_exists('game_attempts', 'userid', $userid, 'gameid', $game->id)) {
                         delete_records('game_grades', 'userid', $userid, 'gameid', $game->id);
                     } else {
                         game_save_best_score($game, $userid);
                     }
                 }
             }
             break;
     }
     // Print information on the number of existing attempts.
     if (!$download) {
         // Do not print notices when downloading.
         if ($attemptnum = count_records('game_attempts', 'gameid', $game->id)) {
             $a = new stdClass();
             $a->attemptnum = $attemptnum;
             $a->studentnum = count_records_select('game_attempts', "gameid = '{$game->id}' AND preview = '0'", 'COUNT(DISTINCT userid)');
             $a->studentstring = $course->students;
             notify(get_string('numattempts', 'game', $a));
         }
     }
     $context = get_context_instance(CONTEXT_MODULE, $cm->id);
     // Find out current groups mode.
     if ($groupmode = groupmode($course, $cm)) {
         // Groups are being used.
         if (!$download) {
             $currentgroup = setup_and_print_groups($course, $groupmode, "report.php?id={$cm->id}&mode=overview");
         } else {
             $currentgroup = get_and_set_current_group($course, $groupmode);
         }
     } else {
         $currentgroup = get_and_set_current_group($course, $groupmode);
     }
     // Set table options.
     $noattempts = optional_param('noattempts', 0, PARAM_INT);
     $detailedmarks = optional_param('detailedmarks', 0, PARAM_INT);
     $pagesize = optional_param('pagesize', 10, PARAM_INT);
     $hasfeedback = game_has_feedback($game->id) && $game->grade > 1.0E-7;
     if ($pagesize < 1) {
         $pagesize = 10;
     }
     // Now check if asked download of data.
     if ($download) {
         $filename = clean_filename("{$course->shortname} " . format_string($game->name, true));
         $sort = '';
     }
     // Define table columns.
     $tablecolumns = array('checkbox', 'picture', 'fullname', 'timestart', 'timefinish', 'duration');
     $tableheaders = array(null, '', get_string('fullname'), get_string('startedon', 'game'), get_string('timecompleted', 'game'), get_string('attemptduration', 'game'));
     if ($game->grade) {
         $tablecolumns[] = 'grade';
         $tableheaders[] = get_string('grade', 'game') . '/' . $game->grade;
     }
     if ($detailedmarks) {
         // We want to display marks for all questions.
         // Start by getting all questions.
         $questionlist = game_questions_in_game($game->questions);
         $questionids = explode(',', $questionlist);
         $sql = "SELECT q.*, i.score AS maxgrade, i.id AS instance" . "  FROM {question} q," . "       {game_queries} i" . " WHERE i.gameid = '{$game->id}' AND q.id = i.questionid" . "   AND q.id IN ({$questionlist})";
         if (!($questions = get_records_sql($sql))) {
             print_error('No questions found');
         }
         $number = 1;
         foreach ($questionids as $key => $id) {
             if ($questions[$id]->length) {
                 // Only print questions of non-zero length.
                 $tablecolumns[] = '$' . $id;
                 $tableheaders[] = '#' . $number;
                 $questions[$id]->number = $number;
                 $number += $questions[$id]->length;
             } else {
                 // Get rid of zero length questions.
                 unset($questions[$id]);
//.........这里部分代码省略.........

require_once "{$CFG->libdir}/rsslib.php";
$id = optional_param('id', 0, PARAM_INT);
// Course id
$subscribe = optional_param('subscribe', null, PARAM_INT);
// Subscribe/Unsubscribe all forums
if ($id) {
    if (!($course = get_record("course", "id", $id))) {
        error("Course ID is incorrect");
    }
} else {
    if (!($course = get_site())) {
        error("Could not find a top-level course!");
    }
}
require_course_login($course);
$currentgroup = get_and_set_current_group($course, groupmode($course));
$coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
unset($SESSION->fromdiscussion);
add_to_log($course->id, "forum", "view forums", "index.php?id={$course->id}");
$strforums = get_string("forums", "forum");
$strforum = get_string("forum", "forum");
$strdescription = get_string("description");
$strdiscussions = get_string("discussions", "forum");
$strsubscribed = get_string("subscribed", "forum");
$strunreadposts = get_string("unreadposts", "forum");
$strtracking = get_string('tracking', 'forum');
$strmarkallread = get_string('markallread', 'forum');
$strtrackforum = get_string('trackforum', 'forum');
$strnotrackforum = get_string('notrackforum', 'forum');
$strsubscribe = get_string('subscribe', 'forum');
$strunsubscribe = get_string('unsubscribe', 'forum');

    $navigation = '';
} elseif (!is_callable('build_navigation')) {
    $navigation = array(array('title' => $course->shortname, 'url' => $CFG->wwwroot . "/course/view.php?id={$course->id}", 'type' => 'course'), array('title' => $strturnitintools, 'url' => $CFG->wwwroot . "/mod/turnitintool/index.php?id={$course->id}", 'type' => 'activity'), array('title' => format_string($turnitintool->name), 'url' => '', 'type' => 'activityinstance'));
} else {
    $navigation = build_navigation('', $cm);
}
// Do not use navbar in 2.7+
if ((property_exists($CFG, 'branch') and $CFG->branch < 27) || !property_exists($CFG, 'branch')) {
    turnitintool_header($cm, $course, $_SERVER["REQUEST_URI"], $turnitintool->name, $SITE->fullname, $navigation, "", "", true, update_module_button($cm->id, $course->id, $strturnitintool), navmenu($course));
} else {
    turnitintool_header($cm, $course, $_SERVER["REQUEST_URI"], $turnitintool->name, $SITE->fullname, $navigation, "", "", true, update_module_button($cm->id, $course->id, $strturnitintool));
}
/// Check to see if groups are being used and abstract for 1.8 if neccessary
if (!is_callable('groups_get_activity_group')) {
    $changegroup = optional_param('group', -1, PARAM_INT);
    $cm->currentgroup = get_and_set_current_group($course, $cm->groupmode, $changegroup);
    setup_and_print_groups($course, $cm->groupmode, $redirectlink);
} else {
    $groupmode = groups_get_activity_groupmode($cm);
    if ($groupmode) {
        groups_get_activity_group($cm, true);
        groups_print_activity_menu($cm, $redirectlink);
    }
}
// Print the main part of the page
echo '<div id="turnitintool_style">';
if (!is_null($param_do)) {
    $do = $param_do;
} else {
    $do = 'intro';
}

if (!($chat = get_record('chat', 'id', $id))) {
    error('Could not find that chat room!');
}
if (!($course = get_record('course', 'id', $chat->course))) {
    error('Could not find the course this belongs to!');
}
if (!($cm = get_coursemodule_from_instance('chat', $chat->id, $course->id))) {
    error('Course Module ID was incorrect');
}
$context = get_context_instance(CONTEXT_MODULE, $cm->id);
require_login($course->id, false, $cm);
require_capability('mod/chat:chat', $context);
/// Check to see if groups are being used here
if ($groupmode = groupmode($course, $cm)) {
    // Groups are being used
    if ($groupid = get_and_set_current_group($course, $groupmode, $groupid)) {
        if (!($group = get_record('groups', 'id', $groupid))) {
            error("That group (id {$groupid}) doesn't exist!");
        }
        $groupname = ': ' . $group->name;
    } else {
        $groupname = ': ' . get_string('allparticipants');
    }
} else {
    $groupid = 0;
    $groupname = '';
}
$strchat = get_string('modulename', 'chat');
// must be before current_language() in chat_login_user() to force course language!!!
$strchats = get_string('modulenameplural', 'chat');
$stridle = get_String('idle', 'chat');

 /**
  *  Display a single submission, ready for grading on a popup window
  *
  * This default method prints the teacher info and submissioncomment box at the top and
  * the student info and submission at the bottom.
  * This method also fetches the necessary data in order to be able to
  * provide a "Next submission" button.
  * Calls preprocess_submission() to give assignment type plug-ins a chance
  * to process submissions before they are graded
  * This method gets its arguments from the page parameters userid and offset
  */
 function display_submission($extra_javascript = '')
 {
     global $CFG;
     $userid = required_param('userid', PARAM_INT);
     $offset = required_param('offset', PARAM_INT);
     //offset for where to start looking for student.
     if (!($user = get_record('user', 'id', $userid))) {
         error('No such user!');
     }
     if (!($submission = $this->get_submission($user->id))) {
         $submission = $this->prepare_new_submission($userid);
     }
     if ($submission->timemodified > $submission->timemarked) {
         $subtype = 'assignmentnew';
     } else {
         $subtype = 'assignmentold';
     }
     /// construct SQL, using current offset to find the data of the next student
     $course = $this->course;
     $assignment = $this->assignment;
     $cm = $this->cm;
     $context = get_context_instance(CONTEXT_MODULE, $cm->id);
     /// Get all ppl that can submit assignments
     $currentgroup = get_and_set_current_group($course, groupmode($course, $cm));
     $users = get_users_by_capability($context, 'mod/assignment:submit', 'u.id, u.id', '', '', '', $currentgroup, '', false);
     $select = 'SELECT u.id, u.firstname, u.lastname, u.picture,
                       s.id AS submissionid, s.grade, s.submissioncomment, 
                       s.timemodified, s.timemarked,
                       COALESCE(SIGN(SIGN(s.timemarked) + SIGN(s.timemarked - s.timemodified)), 0) AS status ';
     $sql = 'FROM ' . $CFG->prefix . 'user u ' . 'LEFT JOIN ' . $CFG->prefix . 'assignment_submissions s ON u.id = s.userid 
                                                               AND s.assignment = ' . $this->assignment->id . ' ' . 'WHERE u.id IN (' . implode(',', array_keys($users)) . ') ';
     require_once $CFG->libdir . '/tablelib.php';
     if ($sort = flexible_table::get_sql_sort('mod-assignment-submissions')) {
         $sort = 'ORDER BY ' . $sort . ' ';
     }
     $nextid = 0;
     if (($auser = get_records_sql($select . $sql . $sort, $offset + 1, 1)) !== false) {
         $nextuser = array_shift($auser);
         /// Calculate user status
         $nextuser->status = $nextuser->timemarked > 0 && $nextuser->timemarked >= $nextuser->timemodified;
         $nextid = $nextuser->id;
     }
     print_header(get_string('feedback', 'assignment') . ':' . fullname($user, true) . ':' . format_string($this->assignment->name));
     /// Print any extra javascript needed for saveandnext
     echo $extra_javascript;
     ///SOme javascript to help with setting up >.>
     echo '<script type="text/javascript">' . "\n";
     echo 'function setNext(){' . "\n";
     echo 'document.getElementById(\'submitform\').mode.value=\'next\';' . "\n";
     echo 'document.getElementById(\'submitform\').userid.value="' . $nextid . '";' . "\n";
     echo '}' . "\n";
     echo 'function saveNext(){' . "\n";
     echo 'document.getElementById(\'submitform\').mode.value=\'saveandnext\';' . "\n";
     echo 'document.getElementById(\'submitform\').userid.value="' . $nextid . '";' . "\n";
     echo 'document.getElementById(\'submitform\').saveuserid.value="' . $userid . '";' . "\n";
     echo 'document.getElementById(\'submitform\').menuindex.value = document.getElementById(\'submitform\').grade.selectedIndex;' . "\n";
     echo '}' . "\n";
     echo '</script>' . "\n";
     echo '<table cellspacing="0" class="feedback ' . $subtype . '" >';
     ///Start of teacher info row
     echo '<tr>';
     echo '<td class="picture teacher">';
     if ($submission->teacher) {
         $teacher = get_record('user', 'id', $submission->teacher);
     } else {
         global $USER;
         $teacher = $USER;
     }
     print_user_picture($teacher->id, $this->course->id, $teacher->picture);
     echo '</td>';
     echo '<td class="content">';
     echo '<form id="submitform" action="submissions.php" method="post">';
     echo '<fieldset class="invisiblefieldset">';
     echo '<input type="hidden" name="offset" value="' . ($offset + 1) . '" />';
     echo '<input type="hidden" name="userid" value="' . $userid . '" />';
     echo '<input type="hidden" name="id" value="' . $this->cm->id . '" />';
     echo '<input type="hidden" name="mode" value="grade" />';
     echo '<input type="hidden" name="menuindex" value="0" />';
     //selected menu index
     //new hidden field, initialized to -1.
     echo '<input type="hidden" name="saveuserid" value="-1" />';
     if ($submission->timemarked) {
         echo '<div class="from">';
         echo '<div class="fullname">' . fullname($teacher, true) . '</div>';
         echo '<div class="time">' . userdate($submission->timemarked) . '</div>';
         echo '</div>';
     }
     echo '<div class="grade">' . get_string('grade') . ':';
     choose_from_menu(make_grades_menu($this->assignment->grade), 'grade', $submission->grade, get_string('nograde'), '', -1);
//.........这里部分代码省略.........

        // Redirect to field entry
    }
}
if ($rid) {
    //editting a record, do you have access to edit this?
    if (!has_capability('mod/data:manageentries', $context) or !data_isowner($rid) or !confirm_sesskey()) {
        error(get_string('noaccess', 'data'));
    }
}
/// Print the page header
$strdata = get_string('modulenameplural', 'data');
print_header_simple($data->name, "", "<a href='index.php?id={$course->id}'>{$strdata}</a> -> {$data->name}", "", "", true, "", navmenu($course));
print_heading(format_string($data->name));
/// Groups needed for Add entry tab
$groupmode = groupmode($course, $cm);
$currentgroup = get_and_set_current_group($course, $groupmode);
/// Print the tabs
$currenttab = 'add';
include 'tabs.php';
$um = new upload_manager('recordsfile', false, false, null, false, 0);
if ($um->preprocess_files() && confirm_sesskey()) {
    $filename = $um->files['recordsfile']['tmp_name'];
    // Large files are likely to take their time and memory. Let PHP know
    // that we'll take longer, and that the process should be recycled soon
    // to free up memory.
    @set_time_limit(0);
    @raise_memory_limit("96M");
    if (function_exists('apache_child_terminate')) {
        @apache_child_terminate();
    }
    //Fix mac/dos newlines

function jclic_get_students($cm, $course, $jclicid)
{
    global $CFG;
    $version_moodle = (double) substr($CFG->release, 0, 3);
    if ($version_moodle >= 1.7) {
        $context = get_context_instance(CONTEXT_MODULE, $cm->id);
        $currentgroup = get_and_set_current_group($course, groupmode($course, $cm));
        $users = get_users_by_capability($context, 'mod/jclic:submit', 'u.id, u.id', '', '', '', $currentgroup, '', false);
        $dbstudents = array();
        if (!empty($users)) {
            $select = 'SELECT u.id AS userid, u.firstname, u.lastname, u.picture ';
            $sql = 'FROM ' . $CFG->prefix . 'user u ' . 'LEFT JOIN ' . $CFG->prefix . 'jclic_sessions a ON u.id = a.user_id AND a.jclicid = ' . $jclicid . ' ' . 'WHERE u.id IN (' . implode(',', array_keys($users)) . ') ';
            $dbstudents = get_records_sql($select . $sql);
        }
    } else {
        $dbstudents = get_records_sql("SELECT DISTINCT us.userid, u.firstname, u.lastname\n  \t\t\t\t       FROM {$CFG->prefix}user u,{$CFG->prefix}user_students us, {$CFG->prefix}jclic j\n  \t\t\t\t       WHERE us.course=j.course AND j.id={$jclicid} AND u.id=us.userid");
    }
    return $dbstudents;
}

/**
 * @todo Document this function
 */
function forum_menu_list($course)
{
    $menu = array();
    $currentgroup = get_and_set_current_group($course, groupmode($course));
    if ($forums = get_all_instances_in_course("forum", $course)) {
        if ($course->format == 'weeks') {
            $strsection = get_string('week');
        } else {
            $strsection = get_string('topic');
        }
        foreach ($forums as $forum) {
            if ($cm = get_coursemodule_from_instance('forum', $forum->id, $course->id)) {
                $context = get_context_instance(CONTEXT_MODULE, $cm->id);
                if (!isset($forum->visible)) {
                    if (!instance_is_visible("forum", $forum) && !has_capability('moodle/course:viewhiddenactivities', $context)) {
                        continue;
                    }
                }
                $groupmode = groupmode($course, $cm);
                // Groups are being used
                if ($groupmode == SEPARATEGROUPS && $currentgroup === false && !has_capability('moodle/site:accessallgroups', $context)) {
                    continue;
                }
            }
            $menu[$forum->id] = format_string($forum->name, true);
        }
    }
    return $menu;
}

 function get_content()
 {
     global $USER, $CFG, $COURSE;
     if ($this->content !== NULL) {
         return $this->content;
     }
     $this->content = new stdClass();
     $this->content->text = '';
     $this->content->footer = '';
     if (empty($this->instance)) {
         return $this->content;
     }
     $timetoshowusers = 300;
     //Seconds default
     if (isset($CFG->block_online_users_timetosee)) {
         $timetoshowusers = $CFG->block_online_users_timetosee * 60;
     }
     $timefrom = 100 * floor((time() - $timetoshowusers) / 100);
     // Round to nearest 100 seconds for better query cache
     // Get context so we can check capabilities.
     $context = get_context_instance(CONTEXT_COURSE, $COURSE->id);
     //Calculate if we are in separate groups
     $isseparategroups = $COURSE->groupmode == SEPARATEGROUPS && $COURSE->groupmodeforce && !has_capability('moodle/site:accessallgroups', $context);
     //Get the user current group
     $currentgroup = $isseparategroups ? get_and_set_current_group($COURSE, groupmode($COURSE)) : NULL;
     $groupmembers = "";
     $groupselect = "";
     //Add this to the SQL to show only group users
     if ($currentgroup !== NULL) {
         $groupmembers = ', ' . groups_members_from_sql();
         //TODO: ", {$CFG->prefix}groups_members gm ";
         $groupselect = ' AND ' . groups_members_where_sql($currentgroup, 'u.id');
         //" AND u.id = gm.userid AND gm.groupid = '$currentgroup'";
     }
     if ($COURSE->id == SITEID) {
         // Site-level
         $select = "SELECT u.id, u.username, u.firstname, u.lastname, u.picture, max(u.lastaccess) as lastaccess ";
         $from = "FROM {$CFG->prefix}user u \n                          {$groupmembers} ";
         $where = "WHERE u.lastaccess > {$timefrom}\n                      {$groupselect} ";
         $order = "ORDER BY lastaccess DESC ";
     } else {
         // Course-level
         $courseselect = "AND ul.courseid = '" . $COURSE->id . "'";
         $select = "SELECT u.id, u.username, u.firstname, u.lastname, u.picture, max(ul.timeaccess) as lastaccess ";
         $from = "FROM {$CFG->prefix}user_lastaccess ul,\n                          {$CFG->prefix}user u\n                          {$groupmembers} ";
         $where = "WHERE ul.timeaccess > {$timefrom}\n                       AND u.id = ul.userid\n                       AND ul.courseid = {$COURSE->id}\n                       {$groupselect} ";
         $order = "ORDER BY lastaccess DESC ";
     }
     $groupby = "GROUP BY u.id, u.username, u.firstname, u.lastname, u.picture ";
     $SQL = $select . $from . $where . $groupby . $order;
     $users = array();
     $pcontext = get_related_contexts_string($context);
     if ($pusers = get_records_sql($SQL, 0, 50)) {
         // We'll just take the most recent 50 maximum
         foreach ($pusers as $puser) {
             // if current user can't view hidden role assignment in this context and
             // user has a hidden role assigned at this context or any parent contexts,
             // ignore this user
             $SQL = "SELECT id FROM {$CFG->prefix}role_assignments\n                        WHERE userid = {$puser->id}\n                        AND contextid {$pcontext}\n                        AND hidden = 1";
             if (!has_capability('moodle/role:viewhiddenassigns', $context) && record_exists_sql($SQL)) {
                 // can't see this user as the current user has no capability
                 // and this user has a hidden assignment at this context or higher
                 continue;
             }
             $puser->fullname = fullname($puser);
             $users[$puser->id] = $puser;
         }
     }
     //Calculate minutes
     $minutes = floor($timetoshowusers / 60);
     $this->content->text = "<div class=\"info\">(" . get_string("periodnminutes", "block_online_users", $minutes) . ")</div>";
     //Now, we have in users, the list of users to show
     //Because they are online
     if (!empty($users)) {
         //Accessibility: Don't want 'Alt' text for the user picture; DO want it for the envelope/message link (existing lang string).
         //Accessibility: Converted <div> to <ul>, inherit existing classes & styles.
         $this->content->text .= "<ul class='list'>\n";
         foreach ($users as $user) {
             $this->content->text .= '<li class="listentry">';
             $timeago = format_time(time() - $user->lastaccess);
             //bruno to calculate correctly on frontpage
             if ($user->username == 'guest') {
                 $this->content->text .= '<div class="user">' . print_user_picture($user->id, $COURSE->id, $user->picture, 16, true, false, '', false);
                 $this->content->text .= get_string('guestuser') . '</div>';
             } else {
                 $this->content->text .= '<div class="user"><a href="' . $CFG->wwwroot . '/user/view.php?id=' . $user->id . '&amp;course=' . $COURSE->id . '" title="' . $timeago . '">';
                 $this->content->text .= print_user_picture($user->id, $COURSE->id, $user->picture, 16, true, false, '', false);
                 $this->content->text .= $user->fullname . '</a></div>';
             }
             if (!empty($USER->id) and $USER->id != $user->id and !empty($CFG->messaging) and !isguest() and $user->username != 'guest') {
                 // Only when logged in and messaging active etc
                 $this->content->text .= '<div class="message"><a title="' . get_string('messageselectadd') . '" href="' . $CFG->wwwroot . '/message/discussion.php?id=' . $user->id . '" onclick="this.target=\'message_' . $user->id . '\';return openpopup(\'/message/discussion.php?id=' . $user->id . '\', \'message_' . $user->id . '\', \'menubar=0,location=0,scrollbars,status,resizable,width=400,height=500\', 0);">' . '<img class="iconsmall" src="' . $CFG->pixpath . '/t/message.gif" alt="' . get_string('messageselectadd') . '" /></a></div>';
             }
             $this->content->text .= "</li>\n";
         }
         $this->content->text .= '</ul><div class="clearer"><!-- --></div>';
     } else {
         $this->content->text .= "<div class=\"info\">" . get_string("none") . "</div>";
     }
     return $this->content;
//.........这里部分代码省略.........

 function get_content()
 {
     global $CFG, $SITE, $COURSE, $USER;
     if (empty($CFG->bloglevel)) {
         $this->content->text = '';
         return $this->content;
     }
     if (empty($this->config->timewithin)) {
         $this->config->timewithin = BLOGDEFAULTTIMEWITHIN;
     }
     if (empty($this->config->numberoftags)) {
         $this->config->numberoftags = BLOGDEFAULTNUMBEROFTAGS;
     }
     if (empty($this->config->sort)) {
         $this->config->sort = BLOGDEFAULTSORT;
     }
     if ($this->content !== NULL) {
         return $this->content;
     }
     if (empty($this->instance)) {
         $this->content = '';
         return $this->content;
     }
     $this->content = new stdClass();
     $this->content->text = '';
     $this->content->footer = '';
     /// Get a list of tags
     $timewithin = $this->config->timewithin * 24 * 60 * 60;
     /// convert to seconds
     $sql = 'SELECT t.id, t.type, t.text, COUNT(DISTINCT bt.id) as ct ';
     $sql .= "FROM {$CFG->prefix}tags t, {$CFG->prefix}blog_tag_instance bt, {$CFG->prefix}post p ";
     $sql .= 'WHERE t.id = bt.tagid ';
     $sql .= 'AND p.id = bt.entryid ';
     $sql .= 'AND (p.publishstate = \'site\' or p.publishstate=\'public\') ';
     $sql .= "AND bt.timemodified > {$timewithin} ";
     $sql .= 'GROUP BY t.id, t.type, t.text ';
     $sql .= 'ORDER BY ct DESC, t.text ASC';
     if ($tags = get_records_sql($sql, 0, $this->config->numberoftags)) {
         /// There are 2 things to do:
         /// 1. tags with the same count should have the same size class
         /// 2. however many tags we have should be spread evenly over the
         ///    20 size classes
         $totaltags = count($tags);
         $currenttag = 0;
         $size = 20;
         $lasttagct = -1;
         $etags = array();
         foreach ($tags as $tag) {
             $currenttag++;
             if ($currenttag == 1) {
                 $lasttagct = $tag->ct;
                 $size = 20;
             } else {
                 if ($tag->ct != $lasttagct) {
                     $lasttagct = $tag->ct;
                     $size = 20 - (int) (($currenttag - 1) / $totaltags * 20);
                 }
             }
             $tag->class = "{$tag->type} s{$size}";
             $etags[] = $tag;
         }
         /// Now we sort the tag display order
         $CFG->tagsort = $this->config->sort;
         usort($etags, "blog_tags_sort");
         /// Finally we create the output
         /// Accessibility: markup as a list.
         $this->content->text .= "\n<ul class='inline-list'>\n";
         foreach ($etags as $tag) {
             switch ($CFG->bloglevel) {
                 case BLOG_USER_LEVEL:
                     $filtertype = 'user';
                     $filterselect = $USER->id;
                     break;
                 case BLOG_GROUP_LEVEL:
                     $filtertype = 'group';
                     $filterselect = get_and_set_current_group($COURSE, groupmode($COURSE));
                     break;
                 case BLOG_COURSE_LEVEL:
                     $filtertype = 'course';
                     if (isset($COURSE->id)) {
                         $filterselect = $COURSE->id;
                     } else {
                         $filterselect = $this->instance->pageid;
                     }
                     break;
                 default:
                     if (isset($COURSE->id) && $COURSE->id != SITEID) {
                         $filtertype = 'course';
                         $filterselect = $COURSE->id;
                     } else {
                         $filtertype = 'site';
                         $filterselect = SITEID;
                     }
                     break;
             }
             $link = $CFG->wwwroot . '/blog/index.php?filtertype=' . $filtertype . '&amp;filterselect=' . $filterselect . '&amp;tagid=' . $tag->id;
             $this->content->text .= '<li><a href="' . $link . '" ' . 'class="' . $tag->class . '" ' . 'title="' . get_string('numberofentries', 'blog', $tag->ct) . '">' . $tag->text . '</a></li> ';
         }
         $this->content->text .= "\n</ul>\n";
     }
//.........这里部分代码省略.........

 function get_content()
 {
     global $CFG, $USER, $COURSE;
     if ($this->content !== NULL) {
         return $this->content;
     }
     $this->content = new stdClass();
     $this->content->text = '';
     $this->content->footer = '';
     if (empty($this->instance)) {
         return $this->content;
     }
     if ($COURSE->newsitems) {
         // Create a nice listing of recent postings
         require_once $CFG->dirroot . '/mod/forum/lib.php';
         // We'll need this
         $text = '';
         if (!($forum = forum_get_course_forum($COURSE->id, 'news'))) {
             return '';
         }
         if (!($cm = get_coursemodule_from_instance('forum', $forum->id, $COURSE->id))) {
             return '';
         }
         $context = get_context_instance(CONTEXT_MODULE, $cm->id);
         /// First work out whether we can post to this group and if so, include a link
         $groupmode = groupmode($COURSE, $cm);
         $currentgroup = get_and_set_current_group($COURSE, $groupmode);
         if (forum_user_can_post_discussion($forum, $currentgroup, $groupmode, $cm, $context)) {
             $text .= '<div class="newlink"><a href="' . $CFG->wwwroot . '/mod/forum/post.php?forum=' . $forum->id . '">' . get_string('addanewtopic', 'forum') . '</a>...</div>';
         }
         /// Get all the recent discussions we're allowed to see
         if (!($discussions = forum_get_discussions($forum->id, 'p.modified DESC', 0, false, $currentgroup, $COURSE->newsitems))) {
             $text .= '(' . get_string('nonews', 'forum') . ')';
             $this->content->text = $text;
             return $this->content;
         }
         /// Actually create the listing now
         $strftimerecent = get_string('strftimerecent');
         $strmore = get_string('more', 'forum');
         /// Accessibility: markup as a list.
         $text .= "\n<ul class='unlist'>\n";
         foreach ($discussions as $discussion) {
             $discussion->subject = $discussion->name;
             $discussion->subject = format_string($discussion->subject, true, $forum->course);
             $text .= '<li class="post">' . '<div class="head">' . '<div class="date">' . userdate($discussion->modified, $strftimerecent) . '</div>' . '<div class="name">' . fullname($discussion) . '</div></div>' . '<div class="info">' . $discussion->subject . ' ' . '<a href="' . $CFG->wwwroot . '/mod/forum/discuss.php?d=' . $discussion->discussion . '">' . $strmore . '...</a></div>' . "</li>\n";
         }
         $text .= "</ul>\n";
         $this->content->text = $text;
         $this->content->footer = '<a href="' . $CFG->wwwroot . '/mod/forum/view.php?f=' . $forum->id . '">' . get_string('oldertopics', 'forum') . '</a> ...';
         /// If RSS is activated at site and forum level and this forum has rss defined, show link
         if (isset($CFG->enablerssfeeds) && isset($CFG->forum_enablerssfeeds) && $CFG->enablerssfeeds && $CFG->forum_enablerssfeeds && $forum->rsstype && $forum->rssarticles) {
             require_once $CFG->dirroot . '/lib/rsslib.php';
             // We'll need this
             if ($forum->rsstype == 1) {
                 $tooltiptext = get_string('rsssubscriberssdiscussions', 'forum', format_string($forum->name));
             } else {
                 $tooltiptext = get_string('rsssubscriberssposts', 'forum', format_string($forum->name));
             }
             if (empty($USER->id)) {
                 $userid = 0;
             } else {
                 $userid = $USER->id;
             }
             $this->content->footer .= '<br />' . rss_get_link($COURSE->id, $userid, 'forum', $forum->id, $tooltiptext);
         }
     }
     return $this->content;
 }

            $header = ' (' . $header . ')';
        }
        echo '<div class="header">' . get_string('newevent', 'calendar') . $header . '</div>';
        if ($eventtype == 'select') {
            $courseid = optional_param('courseid', $SESSION->cal_course_referer, PARAM_INT);
            if ($courseid == 0) {
                // workaround by Dan for bug #6130
                $courseid = SITEID;
            }
            if (!($course = get_record('course', 'id', $courseid))) {
                error('Incorrect course ID');
            }
            if ($groupmode = groupmode($course)) {
                // Groups are being used
                $changegroup = optional_param('group', -1, PARAM_INT);
                $groupid = get_and_set_current_group($course, $groupmode, $changegroup);
            } else {
                $groupid = 0;
            }
            echo '<h2>' . get_string('eventkind', 'calendar') . ':</h2>';
            echo '<div id="selecteventtype">';
            include 'event_select.html';
            echo '</div>';
        } else {
            include 'event_new.html';
            if ($usehtmleditor) {
                use_html_editor("description");
            }
        }
        break;
}

//.........这里部分代码省略.........
                     $icon = "{$CFG->modpixpath}/{$mod->modname}/icon.gif";
                 }
                 if ($mod->indent) {
                     print_spacer(12, 20 * $mod->indent, false);
                 }
                 //                /// If the questionnaire is mandatory
                 //                if (($mod->modname == 'questionnaire') && empty($mandatorypopup)) {
                 //                    $mandatorypopup = is_mod_mandatory($mod, $USER->id);
                 //                }
                 if ($mod->modname == "label") {
                     if (empty($this->course->usemandatory) || empty($mod->mandatory)) {
                         if (!$mod->visible) {
                             echo "<span class=\"dimmed_text\">";
                         }
                         echo format_text($extra, FORMAT_HTML, $labelformatoptions);
                         if (!$mod->visible) {
                             echo "</span>";
                         }
                     } else {
                         if ($isediting) {
                             $linkcss = $mod->visible ? "" : " class=\"dimmed\" ";
                             $alttext = isset($link_title[$mod->modname]) ? $link_title[$mod->modname] : $mod->modfullname;
                             echo "<img src=\"{$icon}\"" . " height=16 width=16 alt=\"{$alttext}\">" . " <font size=2><a title=\"{$alttext}\" {$linkcss} {$extra}" . " href=\"{$CFG->wwwroot}/mod/{$mod->modname}/view.php?id={$mod->id}\">{$instancename}</a></font>";
                         }
                     }
                 } else {
                     if (!$isediting && $mod->modname == 'forum' && isset($this->course->expforumsec) && $this->course->expforumsec == $section->section) {
                         $page = optional_param('page', 0, PARAM_INT);
                         $changegroup = isset($_GET['group']) ? $_GET['group'] : -1;
                         // Group change requested?
                         $forum = get_record("forum", "id", $mod->instance);
                         $groupmode = groupmode($this->course, $mod);
                         // Groups are being used
                         $currentgroup = get_and_set_current_group($this->course, $groupmode, $changegroup);
                         forum_print_latest_discussions($this->course, $forum, $CFG->forum_manydiscussions, 'header', '', $currentgroup, $groupmode, $page);
                     } else {
                         // Normal activity
                         if (!$isteacher && !empty($this->course->activitytracking)) {
                             $act_compl = is_activity_complete($mod, $USER->id);
                             if ($act_compl === false) {
                                 echo ' <img src="' . $CFG->wwwroot . '/course/format/' . $this->course->format . '/pix/incomplete.gif" ' . 'height="16" width="16" alt="Activity Not Completed" hspace="10" ' . 'title="Activity Not Completed">';
                             } else {
                                 if ($act_compl === true || is_int($act_compl) && $act_compl >= 50) {
                                     echo ' <img src="' . $CFG->wwwroot . '/course/format/' . $this->course->format . '/pix/completed.gif" ' . 'height="16" width="16" alt="Activity Completed" hspace="10" ' . 'title="Activity Completed">';
                                 } else {
                                     if (is_int($act_compl)) {
                                         echo ' <img src="' . $CFG->wwwroot . '/course/format/' . $this->course->format . '/pix/completedpoor.gif" ' . 'height="16" width="16" alt="Activity Completed Poorly" hspace="10" ' . 'title="Activity Completed Poorly">';
                                     } else {
                                         if ($act_compl == 'submitted') {
                                             echo ' <img src="' . $CFG->wwwroot . '/course/format/' . $this->course->format . '/pix/submitted.gif" ' . 'height="16" width="16" alt="Activity Submitted" hspace="10" ' . 'title="Activity Submitted">';
                                         }
                                     }
                                 }
                             }
                         }
                         $linkcss = $mod->visible ? "" : " class=\"dimmed\" ";
                         $alttext = isset($link_title[$mod->modname]) ? $link_title[$mod->modname] : $mod->modfullname;
                         echo "<img src=\"{$icon}\"" . " height=16 width=16 alt=\"{$alttext}\">" . " <font size=2><a title=\"{$alttext}\" {$linkcss} {$extra}" . " href=\"{$CFG->wwwroot}/mod/{$mod->modname}/view.php?id={$mod->id}\">{$instancename}</a></font>";
                     }
                 }
                 if ($usetracking && $mod->modname == 'forum') {
                     if ($unread = forum_tp_count_forum_unread_posts($mod, $this->course)) {
                         echo '<span class="unread"> <a href="' . $CFG->wwwroot . '/mod/forum/view.php?id=' . $mod->id . '">';
                         if ($unread == 1) {
                             echo $strunreadpostsone;
                         } else {

        $SESSION->fromurl = $_SERVER["HTTP_REFERER"];
    } else {
        $SESSION->fromurl = '';
    }
    // Load up the $post variable.
    $post = new object();
    $post->course = $course->id;
    $post->forum = $forum->id;
    $post->discussion = 0;
    // ie discussion # not defined yet
    $post->parent = 0;
    $post->subject = '';
    $post->userid = $USER->id;
    $post->message = '';
    if ($groupmode = groupmode($course, $cm)) {
        $post->groupid = get_and_set_current_group($course, $groupmode);
        if ($post->groupid == 0) {
            $post->groupid = -1;
            //TODO: why -1??
        }
    } else {
        $post->groupid = -1;
        //TODO: why -1??
    }
    forum_set_return();
} else {
    if (!empty($reply)) {
        // User is writing a new reply
        if (!($parent = forum_get_post_full($reply))) {
            error("Parent post ID was incorrect");
        }

/**
 * Prints the discussion view screen for a forum.
 *
 * @param object $course The current course object.
 * @param object $forum Forum to be printed.
 * @param int $maxdiscussions The maximum number of discussions per page(optional).
 * @param string $displayformat The display format to use (optional).
 * @param string $sort Sort arguments for database query (optional).
 * @param int $currentgroup Group to display discussions for (optional).
 * @param int $groupmode Group mode of the forum (optional).
 * @param int $page Page mode, page to display (optional).
 *
 */
function forum_print_latest_discussions($course, $forum, $maxdiscussions = 5, $displayformat = 'plain', $sort = '', $currentgroup = -1, $groupmode = -1, $page = -1, $cm = NULL)
{
    global $CFG, $USER;
    if (!$cm) {
        if (!($cm = get_coursemodule_from_instance('forum', $forum->id, $forum->course))) {
            error('Course Module ID was incorrect');
        }
    }
    $context = get_context_instance(CONTEXT_MODULE, $cm->id);
    // Sort out some defaults
    if (!$maxdiscussions && $displayformat == 'plain') {
        $displayformat = 'header';
        // Abbreviate display by default
    }
    $fullpost = false;
    if ($displayformat == 'plain') {
        $fullpost = true;
    }
    // Decide if current user is allowed to see ALL the current discussions or not
    // First check the group stuff
    $groupmode = groupmode($course, $cm);
    $currentgroup = get_and_set_current_group($course, $groupmode);
    // If the user can post discussions, then this is a good place to put the
    // button for it. We do not show the button if we are showing site news
    // and the current user is a guest.
    if (forum_user_can_post_discussion($forum, $currentgroup, $groupmode, $cm, $context) || $forum->type != 'news' && has_capability('moodle/legacy:guest', $context, NULL, false)) {
        echo '<div class="singlebutton forumaddnew">';
        echo "<form id=\"newdiscussionform\" method=\"get\" action=\"{$CFG->wwwroot}/mod/forum/post.php\">";
        echo '<div>';
        echo "<input type=\"hidden\" name=\"forum\" value=\"{$forum->id}\" />";
        echo '<input type="submit" value="';
        echo $forum->type == 'news' ? get_string('addanewtopic', 'forum') : ($forum->type == 'qanda' ? get_string('addanewquestion', 'forum') : get_string('addanewdiscussion', 'forum'));
        echo '" />';
        echo '</div>';
        echo '</form>';
        echo "</div>\n";
    } else {
        if (!isguestuser() and isloggedin() and $forum->type != 'news' and $groupmode == SEPARATEGROUPS and !ismember($currentgroup)) {
            notify(get_string('cannotadddiscussion', 'forum'));
        }
    }
    // Get all the recent discussions we're allowed to see
    $getuserlastmodified = $displayformat == 'header';
    if (!($discussions = forum_get_discussions($forum->id, $sort, 0, $fullpost, $currentgroup, 0, $getuserlastmodified))) {
        echo '<div class="forumnodiscuss">';
        if ($forum->type == 'news') {
            echo '(' . get_string('nonews', 'forum') . ')';
        } else {
            if ($forum->type == 'qanda') {
                echo '(' . get_string('noquestions', 'forum') . ')';
            } else {
                echo '(' . get_string('nodiscussions', 'forum') . ')';
            }
        }
        echo "</div>\n";
        return;
    }
    // If no discussions then don't use paging (to avoid some divide by 0 errors)
    if ($maxdiscussions <= 0) {
        $page = -1;
        $maxdiscussions = 0;
    }
    // If we want paging
    if ($page != -1) {
        ///Get the number of discussions found
        $numdiscussions = count($discussions);
        ///Show the paging bar
        print_paging_bar($numdiscussions, $page, $maxdiscussions, "view.php?f={$forum->id}&amp;");
        //Calculate the page "window"
        $pagestart = $page * $maxdiscussions + 1;
        $pageend = $pagestart + $maxdiscussions - 1;
    }
    $replies = forum_count_discussion_replies($forum->id);
    $canreply = forum_user_can_post($forum);
    $canviewparticipants = has_capability('moodle/course:viewparticipants', $context);
    $discussioncount = 0;
    $olddiscussionlink = false;
    $strdatestring = get_string('strftimerecentfull');
    // Check if the forum is tracked.
    if ($cantrack = forum_tp_can_track_forums($forum)) {
        $forumtracked = forum_tp_is_tracked($forum);
    } else {
        $forumtracked = false;
    }
    if ($displayformat == 'header') {
        echo '<table cellspacing="0" class="forumheaderlist">';
        echo '<thead>';
//.........这里部分代码省略.........