PHP calendar_event::toggle_visibility方法代码示例

/**
 * Set the visibility of a module and inherent properties.
 *
 * Note: Do not forget to trigger the event \core\event\course_module_updated as it needs
 * to be triggered manually, refer to {@link \core\event\course_module_updated::create_from_cm()}.
 *
 * From 2.4 the parameter $prevstateoverrides has been removed, the logic it triggered
 * has been moved to {@link set_section_visible()} which was the only place from which
 * the parameter was used.
 *
 * @param int $id of the module
 * @param int $visible state of the module
 * @return bool false when the module was not found, true otherwise
 */
function set_coursemodule_visible($id, $visible)
{
    global $DB, $CFG;
    require_once $CFG->libdir . '/gradelib.php';
    require_once $CFG->dirroot . '/calendar/lib.php';
    // Trigger developer's attention when using the previously removed argument.
    if (func_num_args() > 2) {
        debugging('Wrong number of arguments passed to set_coursemodule_visible(), $prevstateoverrides
            has been removed.', DEBUG_DEVELOPER);
    }
    if (!($cm = $DB->get_record('course_modules', array('id' => $id)))) {
        return false;
    }
    // Create events and propagate visibility to associated grade items if the value has changed.
    // Only do this if it's changed to avoid accidently overwriting manual showing/hiding of student grades.
    if ($cm->visible == $visible) {
        return true;
    }
    if (!($modulename = $DB->get_field('modules', 'name', array('id' => $cm->module)))) {
        return false;
    }
    if ($events = $DB->get_records('event', array('instance' => $cm->instance, 'modulename' => $modulename))) {
        foreach ($events as $event) {
            if ($visible) {
                $event = new calendar_event($event);
                $event->toggle_visibility(true);
            } else {
                $event = new calendar_event($event);
                $event->toggle_visibility(false);
            }
        }
    }
    // Updating visible and visibleold to keep them in sync. Only changing a section visibility will
    // affect visibleold to allow for an original visibility restore. See set_section_visible().
    $cminfo = new stdClass();
    $cminfo->id = $id;
    $cminfo->visible = $visible;
    $cminfo->visibleold = $visible;
    $DB->update_record('course_modules', $cminfo);
    // Hide the associated grade items so the teacher doesn't also have to go to the gradebook and hide them there.
    // Note that this must be done after updating the row in course_modules, in case
    // the modules grade_item_update function needs to access $cm->visible.
    if (plugin_supports('mod', $modulename, FEATURE_CONTROLS_GRADE_VISIBILITY) && component_callback_exists('mod_' . $modulename, 'grade_item_update')) {
        $instance = $DB->get_record($modulename, array('id' => $cm->instance), '*', MUST_EXIST);
        component_callback('mod_' . $modulename, 'grade_item_update', array($instance));
    } else {
        $grade_items = grade_item::fetch_all(array('itemtype' => 'mod', 'itemmodule' => $modulename, 'iteminstance' => $cm->instance, 'courseid' => $cm->course));
        if ($grade_items) {
            foreach ($grade_items as $grade_item) {
                $grade_item->set_hidden(!$visible);
            }
        }
    }
    rebuild_course_cache($cm->course, true);
    return true;
}

/**
 * Call this function to unhide an event in the calendar table
 * the event will be identified by the id field of the $event object.
 *
 * @param object $event An object representing an event from the calendar table. The event will be identified by the id field.
 * @return true
 */
function show_event($event) {
    global $CFG;
    require_once($CFG->dirroot.'/calendar/lib.php');
    $event = new calendar_event($event);
    return $event->toggle_visibility(true);
}

/**
 * Call this function to unhide an event in the calendar table
 * the event will be identified by the id field of the $event object.
 *
 * @param object $event An object representing an event from the calendar table. The event will be identified by the id field.
 * @return true
 * @deprecated please use calendar_event->toggle_visibility(true) instead.
 * @todo final deprecation of this function in MDL-40607
 */
function show_event($event)
{
    global $CFG;
    require_once $CFG->dirroot . '/calendar/lib.php';
    debugging('show_event() is deprecated, please use calendar_event->toggle_visibility(true) instead.', DEBUG_DEVELOPER);
    $event = new calendar_event($event);
    return $event->toggle_visibility(true);
}