initial commit

classes/get_children.php

@@ -0,0 +1,68 @@
+<?php
+defined('MOODLE_INTERNAL') || die();
+
+require_once $CFG->dirroot . '/lib/externallib.php';
+
+class local_lara_get_children extends external_api
+{
+    /**
+     * Parameter description for get_roles().
+     *
+     * @return external_function_parameters.
+     */
+    public static function get_children_parameters()
+    {
+        return new external_function_parameters([
+            'param' => new external_single_structure([
+                'roleid' => new external_value(PARAM_INT, 'id of the parent role'),
+                'parentid' => new external_value(PARAM_INT, 'parent id'),
+            ]),
+        ]);
+    }
+
+    /**
+     * Return roleinformation.
+     *
+     * This function returns roleid, rolename and roleshortname for all roles or for given roles.
+     *
+     * @param array $param
+     * @return array Array of arrays with role informations.
+     */
+    public static function get_children($param)
+    {
+        global $CFG, $DB;
+        require_once "$CFG->dirroot/group/lib.php";
+
+        $params = self::validate_parameters(self::get_children_parameters(), ['param' => $param]);
+
+        $roleid = $params['param']['roleid'];
+        $parentid = $params['param']['parentid'];
+
+        $children = [];
+
+        $parents = $DB->get_records('role_assignments', ['roleid' => (string) $roleid, 'userid' => (string) $parentid]);
+        foreach ($parents as $parent) {
+            $ctxid = (string)$parent->contextid;
+            $dbChildren = $DB->get_records('context', ['id' => $ctxid, 'contextlevel' => '30']);
+            foreach ($dbChildren as $child) {
+                $cl = new stdClass;
+                $cl->id = ($child->instanceid);
+                array_push($children, $cl);
+            }
+        }
+        return $children;
+    }
+
+    /**
+     * Parameter description for create_sections().
+     *
+     * @return external_description
+     */
+    public static function get_children_returns()
+    {
+        return new external_multiple_structure(
+            new external_single_structure([
+                'id' => new external_value(PARAM_INT, 'role id'),
+            ]));
+    }
+}