PHP remove_course_grades函数代码示例

//.........这里部分代码省略.........
                $sql = "SELECT ue.*\n                          FROM {user_enrolments} ue\n                          JOIN {enrol} e ON (e.id = ue.enrolid AND e.courseid = :courseid)\n                          JOIN {context} c ON (c.contextlevel = :courselevel AND c.instanceid = e.courseid)\n                     LEFT JOIN {role_assignments} ra ON (ra.contextid = c.id AND ra.userid = ue.userid)\n                         WHERE ra.id IS null";
                $params = array('courseid' => $data->courseid, 'courselevel' => CONTEXT_COURSE);
            }
            $rs = $DB->get_recordset_sql($sql, $params);
            foreach ($rs as $ue) {
                if (!isset($instances[$ue->enrolid])) {
                    continue;
                }
                $instance = $instances[$ue->enrolid];
                $plugin = $plugins[$instance->enrol];
                if (!$plugin->allow_unenrol($instance) and !$plugin->allow_unenrol_user($instance, $ue)) {
                    continue;
                }
                $plugin->unenrol_user($instance, $ue->userid);
                $data->unenrolled[$ue->userid] = $ue->userid;
            }
            $rs->close();
        }
    }
    if (!empty($data->unenrolled)) {
        $status[] = array('component' => $componentstr, 'item' => get_string('unenrol', 'enrol') . ' (' . count($data->unenrolled) . ')', 'error' => false);
    }
    $componentstr = get_string('groups');
    // Remove all group members.
    if (!empty($data->reset_groups_members)) {
        groups_delete_group_members($data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('removegroupsmembers', 'group'), 'error' => false);
    }
    // Remove all groups.
    if (!empty($data->reset_groups_remove)) {
        groups_delete_groups($data->courseid, false);
        $status[] = array('component' => $componentstr, 'item' => get_string('deleteallgroups', 'group'), 'error' => false);
    }
    // Remove all grouping members.
    if (!empty($data->reset_groupings_members)) {
        groups_delete_groupings_groups($data->courseid, false);
        $status[] = array('component' => $componentstr, 'item' => get_string('removegroupingsmembers', 'group'), 'error' => false);
    }
    // Remove all groupings.
    if (!empty($data->reset_groupings_remove)) {
        groups_delete_groupings($data->courseid, false);
        $status[] = array('component' => $componentstr, 'item' => get_string('deleteallgroupings', 'group'), 'error' => false);
    }
    // Look in every instance of every module for data to delete.
    $unsupportedmods = array();
    if ($allmods = $DB->get_records('modules')) {
        foreach ($allmods as $mod) {
            $modname = $mod->name;
            $modfile = $CFG->dirroot . '/mod/' . $modname . '/lib.php';
            $moddeleteuserdata = $modname . '_reset_userdata';
            // Function to delete user data.
            if (file_exists($modfile)) {
                if (!$DB->count_records($modname, array('course' => $data->courseid))) {
                    continue;
                    // Skip mods with no instances.
                }
                include_once $modfile;
                if (function_exists($moddeleteuserdata)) {
                    $modstatus = $moddeleteuserdata($data);
                    if (is_array($modstatus)) {
                        $status = array_merge($status, $modstatus);
                    } else {
                        debugging('Module ' . $modname . ' returned incorrect staus - must be an array!');
                    }
                } else {
                    $unsupportedmods[] = $mod;
                }
            } else {
                debugging('Missing lib.php in ' . $modname . ' module!');
            }
        }
    }
    // Mention unsupported mods.
    if (!empty($unsupportedmods)) {
        foreach ($unsupportedmods as $mod) {
            $status[] = array('component' => get_string('modulenameplural', $mod->name), 'item' => '', 'error' => get_string('resetnotimplemented'));
        }
    }
    $componentstr = get_string('gradebook', 'grades');
    // Reset gradebook,.
    if (!empty($data->reset_gradebook_items)) {
        remove_course_grades($data->courseid, false);
        grade_grab_course_grades($data->courseid);
        grade_regrade_final_grades($data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('removeallcourseitems', 'grades'), 'error' => false);
    } else {
        if (!empty($data->reset_gradebook_grades)) {
            grade_course_reset($data->courseid);
            $status[] = array('component' => $componentstr, 'item' => get_string('removeallcoursegrades', 'grades'), 'error' => false);
        }
    }
    // Reset comments.
    if (!empty($data->reset_comments)) {
        require_once $CFG->dirroot . '/comment/lib.php';
        comment::reset_course_page_comments($context);
    }
    $event = \core\event\course_reset_ended::create($eventparams);
    $event->trigger();
    return $status;
}

//.........这里部分代码省略.........
                unset($instances[$key]);
                continue;
            }
            if (!$plugins[$instance->enrol]->allow_unenrol($instance)) {
                unset($instances[$key]);
            }
        }
        $sqlempty = $DB->sql_empty();
        foreach ($data->unenrol_users as $withroleid) {
            $sql = "SELECT DISTINCT ue.userid, ue.enrolid\n                      FROM {user_enrolments} ue\n                      JOIN {enrol} e ON (e.id = ue.enrolid AND e.courseid = :courseid)\n                      JOIN {context} c ON (c.contextlevel = :courselevel AND c.instanceid = e.courseid)\n                      JOIN {role_assignments} ra ON (ra.contextid = c.id AND ra.roleid = :roleid AND ra.userid = ue.userid)";
            $params = array('courseid' => $data->courseid, 'roleid' => $withroleid, 'courselevel' => CONTEXT_COURSE);
            $rs = $DB->get_recordset_sql($sql, $params);
            foreach ($rs as $ue) {
                if (!isset($instances[$ue->enrolid])) {
                    continue;
                }
                $plugins[$instances[$ue->enrolid]->enrol]->unenrol_user($instances[$ue->enrolid], $ue->userid);
                $data->unenrolled[$ue->userid] = $ue->userid;
            }
        }
    }
    if (!empty($data->unenrolled)) {
        $status[] = array('component' => $componentstr, 'item' => get_string('unenrol', 'enrol') . ' (' . count($data->unenrolled) . ')', 'error' => false);
    }
    $componentstr = get_string('groups');
    // remove all group members
    if (!empty($data->reset_groups_members)) {
        groups_delete_group_members($data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('removegroupsmembers', 'group'), 'error' => false);
    }
    // remove all groups
    if (!empty($data->reset_groups_remove)) {
        groups_delete_groups($data->courseid, false);
        $status[] = array('component' => $componentstr, 'item' => get_string('deleteallgroups', 'group'), 'error' => false);
    }
    // remove all grouping members
    if (!empty($data->reset_groupings_members)) {
        groups_delete_groupings_groups($data->courseid, false);
        $status[] = array('component' => $componentstr, 'item' => get_string('removegroupingsmembers', 'group'), 'error' => false);
    }
    // remove all groupings
    if (!empty($data->reset_groupings_remove)) {
        groups_delete_groupings($data->courseid, false);
        $status[] = array('component' => $componentstr, 'item' => get_string('deleteallgroupings', 'group'), 'error' => false);
    }
    // Look in every instance of every module for data to delete
    $unsupported_mods = array();
    if ($allmods = $DB->get_records('modules')) {
        foreach ($allmods as $mod) {
            $modname = $mod->name;
            if (!$DB->count_records($modname, array('course' => $data->courseid))) {
                continue;
                // skip mods with no instances
            }
            $modfile = $CFG->dirroot . '/mod/' . $modname . '/lib.php';
            $moddeleteuserdata = $modname . '_reset_userdata';
            // Function to delete user data
            if (file_exists($modfile)) {
                include_once $modfile;
                if (function_exists($moddeleteuserdata)) {
                    $modstatus = $moddeleteuserdata($data);
                    if (is_array($modstatus)) {
                        $status = array_merge($status, $modstatus);
                    } else {
                        debugging('Module ' . $modname . ' returned incorrect staus - must be an array!');
                    }
                } else {
                    $unsupported_mods[] = $mod;
                }
            } else {
                debugging('Missing lib.php in ' . $modname . ' module!');
            }
        }
    }
    // mention unsupported mods
    if (!empty($unsupported_mods)) {
        foreach ($unsupported_mods as $mod) {
            $status[] = array('component' => get_string('modulenameplural', $mod->name), 'item' => '', 'error' => get_string('resetnotimplemented'));
        }
    }
    $componentstr = get_string('gradebook', 'grades');
    // reset gradebook
    if (!empty($data->reset_gradebook_items)) {
        remove_course_grades($data->courseid, false);
        grade_grab_course_grades($data->courseid);
        grade_regrade_final_grades($data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('removeallcourseitems', 'grades'), 'error' => false);
    } else {
        if (!empty($data->reset_gradebook_grades)) {
            grade_course_reset($data->courseid);
            $status[] = array('component' => $componentstr, 'item' => get_string('removeallcoursegrades', 'grades'), 'error' => false);
        }
    }
    // reset comments
    if (!empty($data->reset_comments)) {
        require_once $CFG->dirroot . '/comment/lib.php';
        comment::reset_course_page_comments($context);
    }
    return $status;
}

//.........这里部分代码省略.........
        mark_context_dirty($context->path);
        $status[] = array('component' => $componentstr, 'item' => get_string('deletecourseoverrides', 'role'), 'error' => false);
    }
    if (!empty($data->reset_roles_local)) {
        $children = get_child_contexts($context);
        foreach ($children as $child) {
            role_unassign(0, 0, 0, $child->id);
        }
        //force refresh for logged in users
        mark_context_dirty($context->path);
        $status[] = array('component' => $componentstr, 'item' => get_string('deletelocalroles', 'role'), 'error' => false);
    }
    // First unenrol users - this cleans some of related user data too, such as forum subscriptions, tracking, etc.
    $data->unenrolled = array();
    if (!empty($data->reset_roles)) {
        foreach ($data->reset_roles as $roleid) {
            if ($users = get_role_users($roleid, $context, false, 'u.id', 'u.id ASC')) {
                foreach ($users as $user) {
                    role_unassign($roleid, $user->id, 0, $context->id);
                    if (!has_capability('moodle/course:view', $context, $user->id)) {
                        $data->unenrolled[$user->id] = $user->id;
                    }
                }
            }
        }
    }
    if (!empty($data->unenrolled)) {
        $status[] = array('component' => $componentstr, 'item' => get_string('unenrol') . ' (' . count($data->unenrolled) . ')', 'error' => false);
    }
    $componentstr = get_string('groups');
    // remove all group members
    if (!empty($data->reset_groups_members)) {
        groups_delete_group_members($data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('removegroupsmembers', 'group'), 'error' => false);
    }
    // remove all groups
    if (!empty($data->reset_groups_remove)) {
        groups_delete_groups($data->courseid, false);
        $status[] = array('component' => $componentstr, 'item' => get_string('deleteallgroups', 'group'), 'error' => false);
    }
    // remove all grouping members
    if (!empty($data->reset_groupings_members)) {
        groups_delete_groupings_groups($data->courseid, false);
        $status[] = array('component' => $componentstr, 'item' => get_string('removegroupingsmembers', 'group'), 'error' => false);
    }
    // remove all groupings
    if (!empty($data->reset_groupings_remove)) {
        groups_delete_groupings($data->courseid, false);
        $status[] = array('component' => $componentstr, 'item' => get_string('deleteallgroupings', 'group'), 'error' => false);
    }
    // Look in every instance of every module for data to delete
    $unsupported_mods = array();
    if ($allmods = get_records('modules')) {
        foreach ($allmods as $mod) {
            $modname = $mod->name;
            if (!count_records($modname, 'course', $data->courseid)) {
                continue;
                // skip mods with no instances
            }
            $modfile = $CFG->dirroot . '/mod/' . $modname . '/lib.php';
            $moddeleteuserdata = $modname . '_reset_userdata';
            // Function to delete user data
            if (file_exists($modfile)) {
                include_once $modfile;
                if (function_exists($moddeleteuserdata)) {
                    $modstatus = $moddeleteuserdata($data);
                    if (is_array($modstatus)) {
                        $status = array_merge($status, $modstatus);
                    } else {
                        debugging('Module ' . $modname . ' returned incorrect staus - must be an array!');
                    }
                } else {
                    $unsupported_mods[] = $mod;
                }
            } else {
                debugging('Missing lib.php in ' . $modname . ' module!');
            }
        }
    }
    // mention unsupported mods
    if (!empty($unsupported_mods)) {
        foreach ($unsupported_mods as $mod) {
            $status[] = array('component' => get_string('modulenameplural', $mod->name), 'item' => '', 'error' => get_string('resetnotimplemented'));
        }
    }
    $componentstr = get_string('gradebook', 'grades');
    // reset gradebook
    if (!empty($data->reset_gradebook_items)) {
        remove_course_grades($data->courseid, false);
        grade_grab_course_grades($data->courseid);
        grade_regrade_final_grades($data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('removeallcourseitems', 'grades'), 'error' => false);
    } else {
        if (!empty($data->reset_gradebook_grades)) {
            grade_course_reset($data->courseid);
            $status[] = array('component' => $componentstr, 'item' => get_string('removeallcoursegrades', 'grades'), 'error' => false);
        }
    }
    return $status;
}

/**
 * Delete a course, including all related data from the database,
 * and any associated files from the moodledata folder.
 *
 * @param int $courseid The id of the course to delete.
 * @param bool $showfeedback Whether to display notifications of each action the function performs.
 * @return bool true if all the removals succeeded. false if there were any failures. If this
 *             method returns false, some of the removals will probably have succeeded, and others
 *             failed, but you have no way of knowing which.
 */
function delete_course($courseid, $showfeedback = true)
{
    global $CFG;
    require_once $CFG->libdir . '/gradelib.php';
    $result = true;
    if (!remove_course_contents($courseid, $showfeedback)) {
        if ($showfeedback) {
            notify("An error occurred while deleting some of the course contents.");
        }
        $result = false;
    }
    remove_course_grades($courseid, $showfeedback);
    if (!delete_records("course", "id", $courseid)) {
        if ($showfeedback) {
            notify("An error occurred while deleting the main course record.");
        }
        $result = false;
    }
    if (!delete_records('context', 'contextlevel', CONTEXT_COURSE, 'instanceid', $courseid)) {
        if ($showfeedback) {
            notify("An error occurred while deleting the main context record.");
        }
        $result = false;
    }
    if (!fulldelete($CFG->dataroot . '/' . $courseid)) {
        if ($showfeedback) {
            notify("An error occurred while deleting the course files.");
        }
        $result = false;
    }
    return $result;
}