Added additional menu items

lib.php

@@ -0,0 +1,43 @@
+<?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/>.
+
+/**
+ * Functions and classes of the patch system.
+ *
+ * @package   local_billingpatch
+ * @copyright 2017 "Valentin Popov" <info@valentineus.link>
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined("MOODLE_INTERNAL") || die();
+
+/**
+ * Adds additional menu items.
+ *
+ * @param global_navigation $navigation
+ */
+function local_billingpatch_extend_navigation(global_navigation $navigation) {
+    $billingnode = navigation_node::create(
+        new lang_string("billing", "local_billingpatch"),
+        new moodle_url("https://billing.styleschool.ru/"),
+        navigation_node::TYPE_CUSTOM,
+        null,
+        "billing",
+        new pix_icon("i/navigationitem", "")
+    );
+    $billingnode->showinflatnavigation = true;
+    $navigation->add_node($billingnode);
+}