*/
function calendar_get_events($tstart, $tend, $users, $groups, $courses, $withduration=true, $ignorehidden=true) {
debugging(__FUNCTION__ . '() is deprecated, please use \core_calendar\api::get_events() instead.', DEBUG_DEVELOPER);
- return \core_calendar\api::get_events($tstart, $tend, $users, $groups, $courses, $withduration, $ignorehidden);
+
+ // We have a new implementation of this function in the calendar API class, which has slightly different behaviour
+ // so the old implementation must remain here.
+ global $DB;
+ $params = array();
+
+ // Quick test.
+ if (empty($users) && empty($groups) && empty($courses)) {
+ return array();
+ }
+
+ // Array of filter conditions. To be concatenated by the OR operator.
+ $filters = [];
+
+ // User filter.
+ if ((is_array($users) && !empty($users)) or is_numeric($users)) {
+ // Events from a number of users.
+ list($insqlusers, $inparamsusers) = $DB->get_in_or_equal($users, SQL_PARAMS_NAMED);
+ $filters[] = "(e.userid $insqlusers AND e.courseid = 0 AND e.groupid = 0)";
+ $params = array_merge($params, $inparamsusers);
+ } else if ($users === true) {
+ // Events from ALL users.
+ $filters[] = "(e.userid != 0 AND e.courseid = 0 AND e.groupid = 0)";
+ }
+
+ // Boolean false (no users at all): We don't need to do anything.
+ // Group filter.
+ if ((is_array($groups) && !empty($groups)) or is_numeric($groups)) {
+ // Events from a number of groups.
+ list($insqlgroups, $inparamsgroups) = $DB->get_in_or_equal($groups, SQL_PARAMS_NAMED);
+ $filters[] = "e.groupid $insqlgroups";
+ $params = array_merge($params, $inparamsgroups);
+ } else if ($groups === true) {
+ // Events from ALL groups.
+ $filters[] = "e.groupid != 0";
+ }
+
+ // Boolean false (no groups at all): We don't need to do anything.
+ // Course filter.
+ if ((is_array($courses) && !empty($courses)) or is_numeric($courses)) {
+ list($insqlcourses, $inparamscourses) = $DB->get_in_or_equal($courses, SQL_PARAMS_NAMED);
+ $filters[] = "(e.groupid = 0 AND e.courseid $insqlcourses)";
+ $params = array_merge($params, $inparamscourses);
+ } else if ($courses === true) {
+ // Events from ALL courses.
+ $filters[] = "(e.groupid = 0 AND e.courseid != 0)";
+ }
+
+ // Security check: if, by now, we have NOTHING in $whereclause, then it means
+ // that NO event-selecting clauses were defined. Thus, we won't be returning ANY
+ // events no matter what. Allowing the code to proceed might return a completely
+ // valid query with only time constraints, thus selecting ALL events in that time frame!
+ if (empty($filters)) {
+ return array();
+ }
+
+ // Build our clause for the filters.
+ $filterclause = implode(' OR ', $filters);
+
+ // Array of where conditions for our query. To be concatenated by the AND operator.
+ $whereconditions = ["($filterclause)"];
+
+ // Time clause.
+ if ($withduration) {
+ $timeclause = "((e.timestart >= :tstart1 OR e.timestart + e.timeduration > :tstart2) AND e.timestart <= :tend)";
+ $params['tstart1'] = $tstart;
+ $params['tstart2'] = $tstart;
+ $params['tend'] = $tend;
+ } else {
+ $timeclause = "(e.timestart >= :tstart AND e.timestart <= :tend)";
+ $params['tstart'] = $tstart;
+ $params['tend'] = $tend;
+ }
+ $whereconditions[] = $timeclause;
+
+ // Show visible only.
+ if ($ignorehidden) {
+ $whereconditions[] = "(e.visible = 1)";
+ }
+
+ // Build the main query's WHERE clause.
+ $whereclause = implode(' AND ', $whereconditions);
+
+ // Build SQL subquery and conditions for filtered events based on priorities.
+ $subquerywhere = '';
+ $subqueryconditions = [];
+
+ // Get the user's courses. Otherwise, get the default courses being shown by the calendar.
+ $usercourses = \core_calendar\api::get_default_courses();
+
+ // Set calendar filters.
+ list($usercourses, $usergroups, $user) = \core_calendar\api::set_filters($usercourses, true);
+ $subqueryparams = [];
+
+ // Flag to indicate whether the query needs to exclude group overrides.
+ $viewgroupsonly = false;
+ if ($user) {
+ // Set filter condition for the user's events.
+ $subqueryconditions[] = "(ev.userid = :user AND ev.courseid = 0 AND ev.groupid = 0)";
+ $subqueryparams['user'] = $user;
+ foreach ($usercourses as $courseid) {
+ if (has_capability('moodle/site:accessallgroups', context_course::instance($courseid))) {
+ $usergroupmembership = groups_get_all_groups($courseid, $user, 0, 'g.id');
+ if (count($usergroupmembership) == 0) {
+ $viewgroupsonly = true;
+ break;
+ }
+ }
+ }
+ }
+
+ // Set filter condition for the user's group events.
+ if ($usergroups === true || $viewgroupsonly) {
+ // Fetch group events, but not group overrides.
+ $subqueryconditions[] = "(ev.groupid != 0 AND ev.eventtype = 'group')";
+ } else if (!empty($usergroups)) {
+ // Fetch group events and group overrides.
+ list($inusergroups, $inusergroupparams) = $DB->get_in_or_equal($usergroups, SQL_PARAMS_NAMED);
+ $subqueryconditions[] = "(ev.groupid $inusergroups)";
+ $subqueryparams = array_merge($subqueryparams, $inusergroupparams);
+ }
+
+ // Get courses to be used for the subquery.
+ $subquerycourses = [];
+ if (is_array($courses)) {
+ $subquerycourses = $courses;
+ } else if (is_numeric($courses)) {
+ $subquerycourses[] = $courses;
+ }
+
+ // Merge with user courses, if necessary.
+ if (!empty($usercourses)) {
+ $subquerycourses = array_merge($subquerycourses, $usercourses);
+ // Make sure we remove duplicate values.
+ $subquerycourses = array_unique($subquerycourses);
+ }
+
+ // Set subquery filter condition for the courses.
+ if (!empty($subquerycourses)) {
+ list($incourses, $incoursesparams) = $DB->get_in_or_equal($subquerycourses, SQL_PARAMS_NAMED);
+ $subqueryconditions[] = "(ev.groupid = 0 AND ev.courseid $incourses)";
+ $subqueryparams = array_merge($subqueryparams, $incoursesparams);
+ }
+
+ // Build the WHERE condition for the sub-query.
+ if (!empty($subqueryconditions)) {
+ $subquerywhere = 'WHERE ' . implode(" OR ", $subqueryconditions);
+ }
+
+ // Merge subquery parameters to the parameters of the main query.
+ if (!empty($subqueryparams)) {
+ $params = array_merge($params, $subqueryparams);
+ }
+
+ // Sub-query that fetches the list of unique events that were filtered based on priority.
+ $subquery = "SELECT ev.modulename,
+ ev.instance,
+ ev.eventtype,
+ MAX(ev.priority) as priority
+ FROM {event} ev
+ $subquerywhere
+ GROUP BY ev.modulename, ev.instance, ev.eventtype";
+
+ // Build the main query.
+ $sql = "SELECT e.*
+ FROM {event} e
+ INNER JOIN ($subquery) fe
+ ON e.modulename = fe.modulename
+ AND e.instance = fe.instance
+ AND e.eventtype = fe.eventtype
+ AND (e.priority = fe.priority OR (e.priority IS NULL AND fe.priority IS NULL))
+ LEFT JOIN {modules} m
+ ON e.modulename = m.name
+ WHERE (m.visible = 1 OR m.visible IS NULL) AND $whereclause
+ ORDER BY e.timestart";
+ $events = $DB->get_records_sql($sql, $params);
+
+ if ($events === false) {
+ $events = array();
+ }
+
+ return $events;
}
/**
