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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* External groups API
*
* @package core_group
* @category external
* @copyright 2009 Petr Skodak
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
require_once("$CFG->libdir/externallib.php");
/**
* Group external functions
*
* @package core_group
* @category external
* @copyright 2011 Jerome Mouneyrac
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.2
*/
class core_group_external extends external_api {
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.2
*/
public static function create_groups_parameters() {
return new external_function_parameters(
array(
'groups' => new external_multiple_structure(
new external_single_structure(
array(
'courseid' => new external_value(PARAM_INT, 'id of course'),
'name' => new external_value(PARAM_TEXT, 'multilang compatible name, course unique'),
'description' => new external_value(PARAM_RAW, 'group description text'),
'descriptionformat' => new external_format_value('description', VALUE_DEFAULT),
'enrolmentkey' => new external_value(PARAM_RAW, 'group enrol secret phrase', VALUE_OPTIONAL),
'idnumber' => new external_value(PARAM_RAW, 'id number', VALUE_OPTIONAL)
)
), 'List of group object. A group has a courseid, a name, a description and an enrolment key.'
)
)
);
}
/**
* Create groups
*
* @param array $groups array of group description arrays (with keys groupname and courseid)
* @return array of newly created groups
* @since Moodle 2.2
*/
public static function create_groups($groups) {
global $CFG, $DB;
require_once("$CFG->dirroot/group/lib.php");
$params = self::validate_parameters(self::create_groups_parameters(), array('groups'=>$groups));
$transaction = $DB->start_delegated_transaction();
$groups = array();
foreach ($params['groups'] as $group) {
$group = (object)$group;
if (trim($group->name) == '') {
throw new invalid_parameter_exception('Invalid group name');
}
if ($DB->get_record('groups', array('courseid'=>$group->courseid, 'name'=>$group->name))) {
throw new invalid_parameter_exception('Group with the same name already exists in the course');
}
// now security checks
$context = context_course::instance($group->courseid, IGNORE_MISSING);
try {
self::validate_context($context);
} catch (Exception $e) {
$exceptionparam = new stdClass();
$exceptionparam->message = $e->getMessage();
$exceptionparam->courseid = $group->courseid;
throw new moodle_exception('errorcoursecontextnotvalid' , 'webservice', '', $exceptionparam);
}
require_capability('moodle/course:managegroups', $context);
// Validate format.
$group->descriptionformat = external_validate_format($group->descriptionformat);
// finally create the group
$group->id = groups_create_group($group, false);
if (!isset($group->enrolmentkey)) {
$group->enrolmentkey = '';
}
if (!isset($group->idnumber)) {
$group->idnumber = '';
}
$groups[] = (array)$group;
}
$transaction->allow_commit();
return $groups;
}
/**
* Returns description of method result value
*
* @return external_description
* @since Moodle 2.2
*/
public static function create_groups_returns() {
return new external_multiple_structure(
new external_single_structure(
array(
'id' => new external_value(PARAM_INT, 'group record id'),
'courseid' => new external_value(PARAM_INT, 'id of course'),
'name' => new external_value(PARAM_TEXT, 'multilang compatible name, course unique'),
'description' => new external_value(PARAM_RAW, 'group description text'),
'descriptionformat' => new external_format_value('description'),
'enrolmentkey' => new external_value(PARAM_RAW, 'group enrol secret phrase'),
'idnumber' => new external_value(PARAM_RAW, 'id number')
)
), 'List of group object. A group has an id, a courseid, a name, a description and an enrolment key.'
);
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.2
*/
public static function get_groups_parameters() {
return new external_function_parameters(
array(
'groupids' => new external_multiple_structure(new external_value(PARAM_INT, 'Group ID')
,'List of group id. A group id is an integer.'),
)
);
}
/**
* Get groups definition specified by ids
*
* @param array $groupids arrays of group ids
* @return array of group objects (id, courseid, name, enrolmentkey)
* @since Moodle 2.2
*/
public static function get_groups($groupids) {
$params = self::validate_parameters(self::get_groups_parameters(), array('groupids'=>$groupids));
$groups = array();
foreach ($params['groupids'] as $groupid) {
// validate params
$group = groups_get_group($groupid, 'id, courseid, name, idnumber, description, descriptionformat, enrolmentkey', MUST_EXIST);
// now security checks
$context = context_course::instance($group->courseid, IGNORE_MISSING);
try {
self::validate_context($context);
} catch (Exception $e) {
$exceptionparam = new stdClass();
$exceptionparam->message = $e->getMessage();
$exceptionparam->courseid = $group->courseid;
throw new moodle_exception('errorcoursecontextnotvalid' , 'webservice', '', $exceptionparam);
}
require_capability('moodle/course:managegroups', $context);
list($group->description, $group->descriptionformat) =
external_format_text($group->description, $group->descriptionformat,
$context->id, 'group', 'description', $group->id);
$groups[] = (array)$group;
}
return $groups;
}
/**
* Returns description of method result value
*
* @return external_description
* @since Moodle 2.2
*/
public static function get_groups_returns() {
return new external_multiple_structure(
new external_single_structure(
array(
'id' => new external_value(PARAM_INT, 'group record id'),
'courseid' => new external_value(PARAM_INT, 'id of course'),
'name' => new external_value(PARAM_TEXT, 'multilang compatible name, course unique'),
'description' => new external_value(PARAM_RAW, 'group description text'),
'descriptionformat' => new external_format_value('description'),
'enrolmentkey' => new external_value(PARAM_RAW, 'group enrol secret phrase'),
'idnumber' => new external_value(PARAM_RAW, 'id number')
)
)
);
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.2
*/
public static function get_course_groups_parameters() {
return new external_function_parameters(
array(
'courseid' => new external_value(PARAM_INT, 'id of course'),
)
);
}
/**
* Get all groups in the specified course
*
* @param int $courseid id of course
* @return array of group objects (id, courseid, name, enrolmentkey)
* @since Moodle 2.2
*/
public static function get_course_groups($courseid) {
$params = self::validate_parameters(self::get_course_groups_parameters(), array('courseid'=>$courseid));
// now security checks
$context = context_course::instance($params['courseid'], IGNORE_MISSING);
try {
self::validate_context($context);
} catch (Exception $e) {
$exceptionparam = new stdClass();
$exceptionparam->message = $e->getMessage();
$exceptionparam->courseid = $params['courseid'];
throw new moodle_exception('errorcoursecontextnotvalid' , 'webservice', '', $exceptionparam);
}
require_capability('moodle/course:managegroups', $context);
$gs = groups_get_all_groups($params['courseid'], 0, 0,
'g.id, g.courseid, g.name, g.idnumber, g.description, g.descriptionformat, g.enrolmentkey');
$groups = array();
foreach ($gs as $group) {
list($group->description, $group->descriptionformat) =
external_format_text($group->description, $group->descriptionformat,
$context->id, 'group', 'description', $group->id);
$groups[] = (array)$group;
}
return $groups;
}
/**
* Returns description of method result value
*
* @return external_description
* @since Moodle 2.2
*/
public static function get_course_groups_returns() {
return new external_multiple_structure(
new external_single_structure(
array(
'id' => new external_value(PARAM_INT, 'group record id'),
'courseid' => new external_value(PARAM_INT, 'id of course'),
'name' => new external_value(PARAM_TEXT, 'multilang compatible name, course unique'),
'description' => new external_value(PARAM_RAW, 'group description text'),
'descriptionformat' => new external_format_value('description'),
'enrolmentkey' => new external_value(PARAM_RAW, 'group enrol secret phrase'),
'idnumber' => new external_value(PARAM_RAW, 'id number')
)
)
);
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.2
*/
public static function delete_groups_parameters() {
return new external_function_parameters(
array(
'groupids' => new external_multiple_structure(new external_value(PARAM_INT, 'Group ID')),
)
);
}
/**
* Delete groups
*
* @param array $groupids array of group ids
* @since Moodle 2.2
*/
public static function delete_groups($groupids) {
global $CFG, $DB;
require_once("$CFG->dirroot/group/lib.php");
$params = self::validate_parameters(self::delete_groups_parameters(), array('groupids'=>$groupids));
$transaction = $DB->start_delegated_transaction();
foreach ($params['groupids'] as $groupid) {
// validate params
$groupid = validate_param($groupid, PARAM_INT);
if (!$group = groups_get_group($groupid, '*', IGNORE_MISSING)) {
// silently ignore attempts to delete nonexisting groups
continue;
}
// now security checks
$context = context_course::instance($group->courseid, IGNORE_MISSING);
try {
self::validate_context($context);
} catch (Exception $e) {
$exceptionparam = new stdClass();
$exceptionparam->message = $e->getMessage();
$exceptionparam->courseid = $group->courseid;
throw new moodle_exception('errorcoursecontextnotvalid' , 'webservice', '', $exceptionparam);
}
require_capability('moodle/course:managegroups', $context);
groups_delete_group($group);
}
$transaction->allow_commit();
}
/**
* Returns description of method result value
*
* @return null
* @since Moodle 2.2
*/
public static function delete_groups_returns() {
return null;
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.2
*/
public static function get_group_members_parameters() {
return new external_function_parameters(
array(
'groupids' => new external_multiple_structure(new external_value(PARAM_INT, 'Group ID')),
)
);
}
/**
* Return all members for a group
*
* @param array $groupids array of group ids
* @return array with group id keys containing arrays of user ids
* @since Moodle 2.2
*/
public static function get_group_members($groupids) {
$members = array();
$params = self::validate_parameters(self::get_group_members_parameters(), array('groupids'=>$groupids));
foreach ($params['groupids'] as $groupid) {
// validate params
$group = groups_get_group($groupid, 'id, courseid, name, enrolmentkey', MUST_EXIST);
// now security checks
$context = context_course::instance($group->courseid, IGNORE_MISSING);
try {
self::validate_context($context);
} catch (Exception $e) {
$exceptionparam = new stdClass();
$exceptionparam->message = $e->getMessage();
$exceptionparam->courseid = $group->courseid;
throw new moodle_exception('errorcoursecontextnotvalid' , 'webservice', '', $exceptionparam);
}
require_capability('moodle/course:managegroups', $context);
$groupmembers = groups_get_members($group->id, 'u.id', 'lastname ASC, firstname ASC');
$members[] = array('groupid'=>$groupid, 'userids'=>array_keys($groupmembers));
}
return $members;
}
/**
* Returns description of method result value
*
* @return external_description
* @since Moodle 2.2
*/
public static function get_group_members_returns() {
return new external_multiple_structure(
new external_single_structure(
array(
'groupid' => new external_value(PARAM_INT, 'group record id'),
'userids' => new external_multiple_structure(new external_value(PARAM_INT, 'user id')),
)
)
);
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.2
*/
public static function add_group_members_parameters() {
return new external_function_parameters(
array(
'members'=> new external_multiple_structure(
new external_single_structure(
array(
'groupid' => new external_value(PARAM_INT, 'group record id'),
'userid' => new external_value(PARAM_INT, 'user id'),
)
)
)
)
);
}
/**
* Add group members
*
* @param array $members of arrays with keys userid, groupid
* @since Moodle 2.2
*/
public static function add_group_members($members) {
global $CFG, $DB;
require_once("$CFG->dirroot/group/lib.php");
$params = self::validate_parameters(self::add_group_members_parameters(), array('members'=>$members));
$transaction = $DB->start_delegated_transaction();
foreach ($params['members'] as $member) {
// validate params
$groupid = $member['groupid'];
$userid = $member['userid'];
$group = groups_get_group($groupid, '*', MUST_EXIST);
$user = $DB->get_record('user', array('id'=>$userid, 'deleted'=>0, 'mnethostid'=>$CFG->mnet_localhost_id), '*', MUST_EXIST);
// now security checks
$context = context_course::instance($group->courseid, IGNORE_MISSING);
try {
self::validate_context($context);
} catch (Exception $e) {
$exceptionparam = new stdClass();
$exceptionparam->message = $e->getMessage();
$exceptionparam->courseid = $group->courseid;
throw new moodle_exception('errorcoursecontextnotvalid' , 'webservice', '', $exceptionparam);
}
require_capability('moodle/course:managegroups', $context);
// now make sure user is enrolled in course - this is mandatory requirement,
// unfortunately this is slow
if (!is_enrolled($context, $userid)) {
throw new invalid_parameter_exception('Only enrolled users may be members of groups');
}
groups_add_member($group, $user);
}
$transaction->allow_commit();
}
/**
* Returns description of method result value
*
* @return null
* @since Moodle 2.2
*/
public static function add_group_members_returns() {
return null;
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.2
*/
public static function delete_group_members_parameters() {
return new external_function_parameters(
array(
'members'=> new external_multiple_structure(
new external_single_structure(
array(
'groupid' => new external_value(PARAM_INT, 'group record id'),
'userid' => new external_value(PARAM_INT, 'user id'),
)
)
)
)
);
}
/**
* Delete group members
*
* @param array $members of arrays with keys userid, groupid
* @since Moodle 2.2
*/
public static function delete_group_members($members) {
global $CFG, $DB;
require_once("$CFG->dirroot/group/lib.php");
$params = self::validate_parameters(self::delete_group_members_parameters(), array('members'=>$members));
$transaction = $DB->start_delegated_transaction();
foreach ($params['members'] as $member) {
// validate params
$groupid = $member['groupid'];
$userid = $member['userid'];
$group = groups_get_group($groupid, '*', MUST_EXIST);
$user = $DB->get_record('user', array('id'=>$userid, 'deleted'=>0, 'mnethostid'=>$CFG->mnet_localhost_id), '*', MUST_EXIST);
// now security checks
$context = context_course::instance($group->courseid, IGNORE_MISSING);
try {
self::validate_context($context);
} catch (Exception $e) {
$exceptionparam = new stdClass();
$exceptionparam->message = $e->getMessage();
$exceptionparam->courseid = $group->courseid;
throw new moodle_exception('errorcoursecontextnotvalid' , 'webservice', '', $exceptionparam);
}
require_capability('moodle/course:managegroups', $context);
if (!groups_remove_member_allowed($group, $user)) {
$fullname = fullname($user, has_capability('moodle/site:viewfullnames', $context));
throw new moodle_exception('errorremovenotpermitted', 'group', '', $fullname);
}
groups_remove_member($group, $user);
}
$transaction->allow_commit();
}
/**
* Returns description of method result value
*
* @return null
* @since Moodle 2.2
*/
public static function delete_group_members_returns() {
return null;
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.3
*/
public static function create_groupings_parameters() {
return new external_function_parameters(
array(
'groupings' => new external_multiple_structure(
new external_single_structure(
array(
'courseid' => new external_value(PARAM_INT, 'id of course'),
'name' => new external_value(PARAM_TEXT, 'multilang compatible name, course unique'),
'description' => new external_value(PARAM_RAW, 'grouping description text'),
'descriptionformat' => new external_format_value('description', VALUE_DEFAULT),
'idnumber' => new external_value(PARAM_RAW, 'id number', VALUE_OPTIONAL)
)
), 'List of grouping object. A grouping has a courseid, a name and a description.'
)
)
);
}
/**
* Create groupings
*
* @param array $groupings array of grouping description arrays (with keys groupname and courseid)
* @return array of newly created groupings
* @since Moodle 2.3
*/
public static function create_groupings($groupings) {
global $CFG, $DB;
require_once("$CFG->dirroot/group/lib.php");
$params = self::validate_parameters(self::create_groupings_parameters(), array('groupings'=>$groupings));
$transaction = $DB->start_delegated_transaction();
$groupings = array();
foreach ($params['groupings'] as $grouping) {
$grouping = (object)$grouping;
if (trim($grouping->name) == '') {
throw new invalid_parameter_exception('Invalid grouping name');
}
if ($DB->count_records('groupings', array('courseid'=>$grouping->courseid, 'name'=>$grouping->name))) {
throw new invalid_parameter_exception('Grouping with the same name already exists in the course');
}
// Now security checks .
$context = context_course::instance($grouping->courseid);
try {
self::validate_context($context);
} catch (Exception $e) {
$exceptionparam = new stdClass();
$exceptionparam->message = $e->getMessage();
$exceptionparam->courseid = $grouping->courseid;
throw new moodle_exception('errorcoursecontextnotvalid' , 'webservice', '', $exceptionparam);
}
require_capability('moodle/course:managegroups', $context);
$grouping->descriptionformat = external_validate_format($grouping->descriptionformat);
// Finally create the grouping.
$grouping->id = groups_create_grouping($grouping);
$groupings[] = (array)$grouping;
}
$transaction->allow_commit();
return $groupings;
}
/**
* Returns description of method result value
*
* @return external_description
* @since Moodle 2.3
*/
public static function create_groupings_returns() {
return new external_multiple_structure(
new external_single_structure(
array(
'id' => new external_value(PARAM_INT, 'grouping record id'),
'courseid' => new external_value(PARAM_INT, 'id of course'),
'name' => new external_value(PARAM_TEXT, 'multilang compatible name, course unique'),
'description' => new external_value(PARAM_RAW, 'grouping description text'),
'descriptionformat' => new external_format_value('description'),
'idnumber' => new external_value(PARAM_RAW, 'id number')
)
), 'List of grouping object. A grouping has an id, a courseid, a name and a description.'
);
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.3
*/
public static function update_groupings_parameters() {
return new external_function_parameters(
array(
'groupings' => new external_multiple_structure(
new external_single_structure(
array(
'id' => new external_value(PARAM_INT, 'id of grouping'),
'name' => new external_value(PARAM_TEXT, 'multilang compatible name, course unique'),
'description' => new external_value(PARAM_RAW, 'grouping description text'),
'descriptionformat' => new external_format_value('description', VALUE_DEFAULT),
'idnumber' => new external_value(PARAM_RAW, 'id number', VALUE_OPTIONAL)
)
), 'List of grouping object. A grouping has a courseid, a name and a description.'
)
)
);
}
/**
* Update groupings
*
* @param array $groupings array of grouping description arrays (with keys groupname and courseid)
* @return array of newly updated groupings
* @since Moodle 2.3
*/
public static function update_groupings($groupings) {
global $CFG, $DB;
require_once("$CFG->dirroot/group/lib.php");
$params = self::validate_parameters(self::update_groupings_parameters(), array('groupings'=>$groupings));
$transaction = $DB->start_delegated_transaction();
foreach ($params['groupings'] as $grouping) {
$grouping = (object)$grouping;
if (trim($grouping->name) == '') {
throw new invalid_parameter_exception('Invalid grouping name');
}
if (! $currentgrouping = $DB->get_record('groupings', array('id'=>$grouping->id))) {
throw new invalid_parameter_exception("Grouping $grouping->id does not exist in the course");
}
// Check if the new modified grouping name already exists in the course.
if ($grouping->name != $currentgrouping->name and
$DB->count_records('groupings', array('courseid'=>$currentgrouping->courseid, 'name'=>$grouping->name))) {
throw new invalid_parameter_exception('A different grouping with the same name already exists in the course');
}
$grouping->courseid = $currentgrouping->courseid;
// Now security checks.
$context = context_course::instance($grouping->courseid);
try {
self::validate_context($context);
} catch (Exception $e) {
$exceptionparam = new stdClass();
$exceptionparam->message = $e->getMessage();
$exceptionparam->courseid = $grouping->courseid;
throw new moodle_exception('errorcoursecontextnotvalid' , 'webservice', '', $exceptionparam);
}
require_capability('moodle/course:managegroups', $context);
// We must force allways FORMAT_HTML.
$grouping->descriptionformat = external_validate_format($grouping->descriptionformat);
// Finally update the grouping.
groups_update_grouping($grouping);
}
$transaction->allow_commit();
return null;
}
/**
* Returns description of method result value
*
* @return external_description
* @since Moodle 2.3
*/
public static function update_groupings_returns() {
return null;
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.3
*/
public static function get_groupings_parameters() {
return new external_function_parameters(
array(
'groupingids' => new external_multiple_structure(new external_value(PARAM_INT, 'grouping ID')
, 'List of grouping id. A grouping id is an integer.'),
'returngroups' => new external_value(PARAM_BOOL, 'return associated groups', VALUE_DEFAULT, 0)
)
);
}
/**
* Get groupings definition specified by ids
*
* @param array $groupingids arrays of grouping ids
* @param boolean $returngroups return the associated groups if true. The default is false.
* @return array of grouping objects (id, courseid, name)
* @since Moodle 2.3
*/
public static function get_groupings($groupingids, $returngroups = false) {
global $CFG, $DB;
require_once("$CFG->dirroot/group/lib.php");
require_once("$CFG->libdir/filelib.php");
$params = self::validate_parameters(self::get_groupings_parameters(),
array('groupingids' => $groupingids,
'returngroups' => $returngroups));
$groupings = array();
foreach ($params['groupingids'] as $groupingid) {
// Validate params.
$grouping = groups_get_grouping($groupingid, '*', MUST_EXIST);
// Now security checks.
$context = context_course::instance($grouping->courseid);
try {
self::validate_context($context);
} catch (Exception $e) {
$exceptionparam = new stdClass();
$exceptionparam->message = $e->getMessage();
$exceptionparam->courseid = $grouping->courseid;
throw new moodle_exception('errorcoursecontextnotvalid' , 'webservice', '', $exceptionparam);
}
require_capability('moodle/course:managegroups', $context);
list($grouping->description, $grouping->descriptionformat) =
external_format_text($grouping->description, $grouping->descriptionformat,
$context->id, 'grouping', 'description', $grouping->id);
$groupingarray = (array)$grouping;
if ($params['returngroups']) {
$grouprecords = $DB->get_records_sql("SELECT * FROM {groups} g INNER JOIN {groupings_groups} gg ".
"ON g.id = gg.groupid WHERE gg.groupingid = ? ".
"ORDER BY groupid", array($groupingid));
if ($grouprecords) {
$groups = array();
foreach ($grouprecords as $grouprecord) {
list($grouprecord->description, $grouprecord->descriptionformat) =
external_format_text($grouprecord->description, $grouprecord->descriptionformat,
$context->id, 'group', 'description', $grouprecord->groupid);
$groups[] = array('id' => $grouprecord->groupid,
'name' => $grouprecord->name,
'idnumber' => $grouprecord->idnumber,
'description' => $grouprecord->description,
'descriptionformat' => $grouprecord->descriptionformat,
'enrolmentkey' => $grouprecord->enrolmentkey,
'courseid' => $grouprecord->courseid
);
}
$groupingarray['groups'] = $groups;
}
}
$groupings[] = $groupingarray;
}
return $groupings;
}
/**
* Returns description of method result value
*
* @return external_description
* @since Moodle 2.3
*/
public static function get_groupings_returns() {
return new external_multiple_structure(
new external_single_structure(
array(
'id' => new external_value(PARAM_INT, 'grouping record id'),
'courseid' => new external_value(PARAM_INT, 'id of course'),
'name' => new external_value(PARAM_TEXT, 'multilang compatible name, course unique'),
'description' => new external_value(PARAM_RAW, 'grouping description text'),
'descriptionformat' => new external_format_value('description'),
'idnumber' => new external_value(PARAM_RAW, 'id number'),
'groups' => new external_multiple_structure(
new external_single_structure(
array(
'id' => new external_value(PARAM_INT, 'group record id'),
'courseid' => new external_value(PARAM_INT, 'id of course'),
'name' => new external_value(PARAM_TEXT, 'multilang compatible name, course unique'),
'description' => new external_value(PARAM_RAW, 'group description text'),
'descriptionformat' => new external_format_value('description'),
'enrolmentkey' => new external_value(PARAM_RAW, 'group enrol secret phrase'),
'idnumber' => new external_value(PARAM_RAW, 'id number')
)
),
'optional groups', VALUE_OPTIONAL)
)
)
);
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.3
*/
public static function get_course_groupings_parameters() {
return new external_function_parameters(
array(
'courseid' => new external_value(PARAM_INT, 'id of course'),
)
);
}
/**
* Get all groupings in the specified course
*
* @param int $courseid id of course
* @return array of grouping objects (id, courseid, name, enrolmentkey)
* @since Moodle 2.3
*/
public static function get_course_groupings($courseid) {
global $CFG;
require_once("$CFG->dirroot/group/lib.php");
require_once("$CFG->libdir/filelib.php");
$params = self::validate_parameters(self::get_course_groupings_parameters(), array('courseid'=>$courseid));
// Now security checks.
$context = context_course::instance($params['courseid']);
try {
self::validate_context($context);
} catch (Exception $e) {
$exceptionparam = new stdClass();
$exceptionparam->message = $e->getMessage();
$exceptionparam->courseid = $params['courseid'];
throw new moodle_exception('errorcoursecontextnotvalid' , 'webservice', '', $exceptionparam);
}
require_capability('moodle/course:managegroups', $context);
$gs = groups_get_all_groupings($params['courseid']);
$groupings = array();
foreach ($gs as $grouping) {
list($grouping->description, $grouping->descriptionformat) =
external_format_text($grouping->description, $grouping->descriptionformat,
$context->id, 'grouping', 'description', $grouping->id);
$groupings[] = (array)$grouping;
}
return $groupings;
}
/**
* Returns description of method result value
*
* @return external_description
* @since Moodle 2.3
*/
public static function get_course_groupings_returns() {
return new external_multiple_structure(
new external_single_structure(
array(
'id' => new external_value(PARAM_INT, 'grouping record id'),
'courseid' => new external_value(PARAM_INT, 'id of course'),
'name' => new external_value(PARAM_TEXT, 'multilang compatible name, course unique'),
'description' => new external_value(PARAM_RAW, 'grouping description text'),
'descriptionformat' => new external_format_value('description'),
'idnumber' => new external_value(PARAM_RAW, 'id number')
)
)
);
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.3
*/
public static function delete_groupings_parameters() {
return new external_function_parameters(
array(
'groupingids' => new external_multiple_structure(new external_value(PARAM_INT, 'grouping ID')),
)
);
}
/**
* Delete groupings
*
* @param array $groupingids array of grouping ids
* @return void
* @since Moodle 2.3
*/
public static function delete_groupings($groupingids) {
global $CFG, $DB;
require_once("$CFG->dirroot/group/lib.php");
$params = self::validate_parameters(self::delete_groupings_parameters(), array('groupingids'=>$groupingids));
$transaction = $DB->start_delegated_transaction();
foreach ($params['groupingids'] as $groupingid) {
if (!$grouping = groups_get_grouping($groupingid)) {
// Silently ignore attempts to delete nonexisting groupings.
continue;
}
// Now security checks.
$context = context_course::instance($grouping->courseid);
try {
self::validate_context($context);
} catch (Exception $e) {
$exceptionparam = new stdClass();
$exceptionparam->message = $e->getMessage();
$exceptionparam->courseid = $grouping->courseid;
throw new moodle_exception('errorcoursecontextnotvalid' , 'webservice', '', $exceptionparam);
}
require_capability('moodle/course:managegroups', $context);
groups_delete_grouping($grouping);
}
$transaction->allow_commit();
}
/**
* Returns description of method result value
*
* @return external_description
* @since Moodle 2.3
*/
public static function delete_groupings_returns() {
return null;
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.3
*/
public static function assign_grouping_parameters() {
return new external_function_parameters(
array(
'assignments'=> new external_multiple_structure(
new external_single_structure(
array(
'groupingid' => new external_value(PARAM_INT, 'grouping record id'),
'groupid' => new external_value(PARAM_INT, 'group record id'),
)
)
)
)
);
}
/**
* Assign a group to a grouping
*
* @param array $assignments of arrays with keys groupid, groupingid
* @return void
* @since Moodle 2.3
*/
public static function assign_grouping($assignments) {
global $CFG, $DB;
require_once("$CFG->dirroot/group/lib.php");
$params = self::validate_parameters(self::assign_grouping_parameters(), array('assignments'=>$assignments));
$transaction = $DB->start_delegated_transaction();
foreach ($params['assignments'] as $assignment) {
// Validate params.
$groupingid = $assignment['groupingid'];
$groupid = $assignment['groupid'];
$grouping = groups_get_grouping($groupingid, 'id, courseid', MUST_EXIST);
$group = groups_get_group($groupid, 'id, courseid', MUST_EXIST);
if ($DB->record_exists('groupings_groups', array('groupingid'=>$groupingid, 'groupid'=>$groupid))) {
// Continue silently if the group is yet assigned to the grouping.
continue;
}
// Now security checks.
$context = context_course::instance($grouping->courseid);
try {
self::validate_context($context);
} catch (Exception $e) {
$exceptionparam = new stdClass();
$exceptionparam->message = $e->getMessage();
$exceptionparam->courseid = $group->courseid;
throw new moodle_exception('errorcoursecontextnotvalid' , 'webservice', '', $exceptionparam);
}
require_capability('moodle/course:managegroups', $context);
groups_assign_grouping($groupingid, $groupid);
}
$transaction->allow_commit();
}
/**
* Returns description of method result value
*
* @return null
* @since Moodle 2.3
*/
public static function assign_grouping_returns() {
return null;
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.3
*/
public static function unassign_grouping_parameters() {
return new external_function_parameters(
array(
'unassignments'=> new external_multiple_structure(
new external_single_structure(
array(
'groupingid' => new external_value(PARAM_INT, 'grouping record id'),
'groupid' => new external_value(PARAM_INT, 'group record id'),
)
)
)
)
);
}
/**
* Unassign a group from a grouping
*
* @param array $unassignments of arrays with keys groupid, groupingid
* @return void
* @since Moodle 2.3
*/
public static function unassign_grouping($unassignments) {
global $CFG, $DB;
require_once("$CFG->dirroot/group/lib.php");
$params = self::validate_parameters(self::unassign_grouping_parameters(), array('unassignments'=>$unassignments));
$transaction = $DB->start_delegated_transaction();
foreach ($params['unassignments'] as $unassignment) {
// Validate params.
$groupingid = $unassignment['groupingid'];
$groupid = $unassignment['groupid'];
$grouping = groups_get_grouping($groupingid, 'id, courseid', MUST_EXIST);
$group = groups_get_group($groupid, 'id, courseid', MUST_EXIST);
if (!$DB->record_exists('groupings_groups', array('groupingid'=>$groupingid, 'groupid'=>$groupid))) {
// Continue silently if the group is not assigned to the grouping.
continue;
}
// Now security checks.
$context = context_course::instance($grouping->courseid);
try {
self::validate_context($context);
} catch (Exception $e) {
$exceptionparam = new stdClass();
$exceptionparam->message = $e->getMessage();
$exceptionparam->courseid = $group->courseid;
throw new moodle_exception('errorcoursecontextnotvalid' , 'webservice', '', $exceptionparam);
}
require_capability('moodle/course:managegroups', $context);
groups_unassign_grouping($groupingid, $groupid);
}
$transaction->allow_commit();
}
/**
* Returns description of method result value
*
* @return null
* @since Moodle 2.3
*/
public static function unassign_grouping_returns() {
return null;
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.9
*/
public static function get_course_user_groups_parameters() {
return new external_function_parameters(
array(
'courseid' => new external_value(PARAM_INT,
'Id of course (empty or 0 for all the courses where the user is enrolled).', VALUE_DEFAULT, 0),
'userid' => new external_value(PARAM_INT, 'Id of user (empty or 0 for current user).', VALUE_DEFAULT, 0),
'groupingid' => new external_value(PARAM_INT, 'returns only groups in the specified grouping', VALUE_DEFAULT, 0)
)
);
}
/**
* Get all groups in the specified course for the specified user.
*
* @throws moodle_exception
* @param int $courseid id of course.
* @param int $userid id of user.
* @param int $groupingid optional returns only groups in the specified grouping.
* @return array of group objects (id, name, description, format) and possible warnings.
* @since Moodle 2.9
*/
public static function get_course_user_groups($courseid = 0, $userid = 0, $groupingid = 0) {
global $USER;
// Warnings array, it can be empty at the end but is mandatory.
$warnings = array();
$params = array(
'courseid' => $courseid,
'userid' => $userid,
'groupingid' => $groupingid
);
$params = self::validate_parameters(self::get_course_user_groups_parameters(), $params);
$courseid = $params['courseid'];
$userid = $params['userid'];
$groupingid = $params['groupingid'];
// Validate user.
if (empty($userid)) {
$userid = $USER->id;
} else {
$user = core_user::get_user($userid, '*', MUST_EXIST);
core_user::require_active_user($user);
}
// Get courses.
if (empty($courseid)) {
$courses = enrol_get_users_courses($userid, true);
$checkenrolments = false; // No need to check enrolments here since they are my courses.
} else {
$courses = array($courseid => get_course($courseid));
$checkenrolments = true;
}
// Security checks.
list($courses, $warnings) = external_util::validate_courses(array_keys($courses), $courses, true);
$usergroups = array();
foreach ($courses as $course) {
// Check if we have permissions for retrieve the information.
if ($userid != $USER->id && !has_capability('moodle/course:managegroups', $course->context)) {
$warnings[] = array(
'item' => 'course',
'itemid' => $course->id,
'warningcode' => 'cannotmanagegroups',
'message' => "User $USER->id cannot manage groups in course $course->id",
);
continue;
}
// Check if the user being check is enrolled in the given course.
if ($checkenrolments && !is_enrolled($course->context, $userid)) {
// We return a warning because the function does not fail for not enrolled users.
$warnings[] = array(
'item' => 'course',
'itemid' => $course->id,
'warningcode' => 'notenrolled',
'message' => "User $userid is not enrolled in course $course->id",
);
}
$groups = groups_get_all_groups($course->id, $userid, $groupingid,
'g.id, g.name, g.description, g.descriptionformat, g.idnumber');
foreach ($groups as $group) {
list($group->description, $group->descriptionformat) =
external_format_text($group->description, $group->descriptionformat,
$course->context->id, 'group', 'description', $group->id);
$group->courseid = $course->id;
$usergroups[] = $group;
}
}
$results = array(
'groups' => $usergroups,
'warnings' => $warnings
);
return $results;
}
/**
* Returns description of method result value.
*
* @return external_description A single structure containing groups and possible warnings.
* @since Moodle 2.9
*/
public static function get_course_user_groups_returns() {
return new external_single_structure(
array(
'groups' => new external_multiple_structure(self::group_description()),
'warnings' => new external_warnings(),
)
);
}
/**
* Create group return value description.
*
* @return external_single_structure The group description
*/
public static function group_description() {
return new external_single_structure(
array(
'id' => new external_value(PARAM_INT, 'group record id'),
'name' => new external_value(PARAM_TEXT, 'multilang compatible name, course unique'),
'description' => new external_value(PARAM_RAW, 'group description text'),
'descriptionformat' => new external_format_value('description'),
'idnumber' => new external_value(PARAM_RAW, 'id number'),
'courseid' => new external_value(PARAM_INT, 'course id', VALUE_OPTIONAL),
)
);
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 3.0
*/
public static function get_activity_allowed_groups_parameters() {
return new external_function_parameters(
array(
'cmid' => new external_value(PARAM_INT, 'course module id'),
'userid' => new external_value(PARAM_INT, 'id of user, empty for current user', VALUE_DEFAULT, 0)
)
);
}
/**
* Gets a list of groups that the user is allowed to access within the specified activity.
*
* @throws moodle_exception
* @param int $cmid course module id
* @param int $userid id of user.
* @return array of group objects (id, name, description, format) and possible warnings.
* @since Moodle 3.0
*/
public static function get_activity_allowed_groups($cmid, $userid = 0) {
global $USER;
// Warnings array, it can be empty at the end but is mandatory.
$warnings = array();
$params = array(
'cmid' => $cmid,
'userid' => $userid
);
$params = self::validate_parameters(self::get_activity_allowed_groups_parameters(), $params);
$cmid = $params['cmid'];
$userid = $params['userid'];
$cm = get_coursemodule_from_id(null, $cmid, 0, false, MUST_EXIST);
// Security checks.
$context = context_module::instance($cm->id);
$coursecontext = context_course::instance($cm->course);
self::validate_context($context);
if (empty($userid)) {
$userid = $USER->id;
}
$user = core_user::get_user($userid, '*', MUST_EXIST);
core_user::require_active_user($user);
// Check if we have permissions for retrieve the information.
if ($user->id != $USER->id) {
if (!has_capability('moodle/course:managegroups', $context)) {
throw new moodle_exception('accessdenied', 'admin');
}
// Validate if the user is enrolled in the course.
$course = get_course($cm->course);
if (!can_access_course($course, $user, '', true)) {
// We return a warning because the function does not fail for not enrolled users.
$warning = array();
$warning['item'] = 'course';
$warning['itemid'] = $cm->course;
$warning['warningcode'] = '1';
$warning['message'] = "User $user->id cannot access course $cm->course";
$warnings[] = $warning;
}
}
$usergroups = array();
if (empty($warnings)) {
$groups = groups_get_activity_allowed_groups($cm, $user->id);
foreach ($groups as $group) {
list($group->description, $group->descriptionformat) =
external_format_text($group->description, $group->descriptionformat,
$coursecontext->id, 'group', 'description', $group->id);
$group->courseid = $cm->course;
$usergroups[] = $group;
}
}
$results = array(
'groups' => $usergroups,
'canaccessallgroups' => has_capability('moodle/site:accessallgroups', $context, $user),
'warnings' => $warnings
);
return $results;
}
/**
* Returns description of method result value.
*
* @return external_description A single structure containing groups and possible warnings.
* @since Moodle 3.0
*/
public static function get_activity_allowed_groups_returns() {
return new external_single_structure(
array(
'groups' => new external_multiple_structure(self::group_description()),
'canaccessallgroups' => new external_value(PARAM_BOOL,
'Whether the user will be able to access all the activity groups.', VALUE_OPTIONAL),
'warnings' => new external_warnings(),
)
);
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 3.0
*/
public static function get_activity_groupmode_parameters() {
return new external_function_parameters(
array(
'cmid' => new external_value(PARAM_INT, 'course module id')
)
);
}
/**
* Returns effective groupmode used in a given activity.
*
* @throws moodle_exception
* @param int $cmid course module id.
* @return array containing the group mode and possible warnings.
* @since Moodle 3.0
* @throws moodle_exception
*/
public static function get_activity_groupmode($cmid) {
global $USER;
// Warnings array, it can be empty at the end but is mandatory.
$warnings = array();
$params = array(
'cmid' => $cmid
);
$params = self::validate_parameters(self::get_activity_groupmode_parameters(), $params);
$cmid = $params['cmid'];
$cm = get_coursemodule_from_id(null, $cmid, 0, false, MUST_EXIST);
// Security checks.
$context = context_module::instance($cm->id);
self::validate_context($context);
$groupmode = groups_get_activity_groupmode($cm);
$results = array(
'groupmode' => $groupmode,
'warnings' => $warnings
);
return $results;
}
/**
* Returns description of method result value.
*
* @return external_description
* @since Moodle 3.0
*/
public static function get_activity_groupmode_returns() {
return new external_single_structure(
array(
'groupmode' => new external_value(PARAM_INT, 'group mode:
0 for no groups, 1 for separate groups, 2 for visible groups'),
'warnings' => new external_warnings(),
)
);
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 3.6
*/
public static function update_groups_parameters() {
return new external_function_parameters(
array(
'groups' => new external_multiple_structure(
new external_single_structure(
array(
'id' => new external_value(PARAM_INT, 'ID of the group'),
'name' => new external_value(PARAM_TEXT, 'multilang compatible name, course unique'),
'description' => new external_value(PARAM_RAW, 'group description text', VALUE_OPTIONAL),
'descriptionformat' => new external_format_value('description', VALUE_DEFAULT),
'enrolmentkey' => new external_value(PARAM_RAW, 'group enrol secret phrase', VALUE_OPTIONAL),
'idnumber' => new external_value(PARAM_RAW, 'id number', VALUE_OPTIONAL)
)
), 'List of group objects. A group is found by the id, then all other details provided will be updated.'
)
)
);
}
/**
* Update groups
*
* @param array $groups
* @return null
* @since Moodle 3.6
*/
public static function update_groups($groups) {
global $CFG, $DB;
require_once("$CFG->dirroot/group/lib.php");
$params = self::validate_parameters(self::update_groups_parameters(), array('groups' => $groups));
$transaction = $DB->start_delegated_transaction();
foreach ($params['groups'] as $group) {
$group = (object)$group;
if (trim($group->name) == '') {
throw new invalid_parameter_exception('Invalid group name');
}
if (! $currentgroup = $DB->get_record('groups', array('id' => $group->id))) {
throw new invalid_parameter_exception("Group $group->id does not exist");
}
// Check if the modified group name already exists in the course.
if ($group->name != $currentgroup->name and
$DB->get_record('groups', array('courseid' => $currentgroup->courseid, 'name' => $group->name))) {
throw new invalid_parameter_exception('A different group with the same name already exists in the course');
}
$group->courseid = $currentgroup->courseid;
// Now security checks.
$context = context_course::instance($group->courseid);
try {
self::validate_context($context);
} catch (Exception $e) {
$exceptionparam = new stdClass();
$exceptionparam->message = $e->getMessage();
$exceptionparam->courseid = $group->courseid;
throw new moodle_exception('errorcoursecontextnotvalid', 'webservice', '', $exceptionparam);
}
require_capability('moodle/course:managegroups', $context);
if (!empty($group->description)) {
$group->descriptionformat = external_validate_format($group->descriptionformat);
}
groups_update_group($group);
}
$transaction->allow_commit();
return null;
}
/**
* Returns description of method result value
*
* @return null
* @since Moodle 3.6
*/
public static function update_groups_returns() {
return null;
}
}