Fix fatal error for moved method

main/document/create_document.php

@@ -300,7 +300,7 @@ if (!$is_allowed_in_course) {
 
 if (!($is_allowed_to_edit ||
     $_SESSION['group_member_with_upload_rights'] ||
-    is_my_shared_folder($userId, $dir, api_get_session_id()))
+    DocumentManager::is_my_shared_folder($userId, $dir, api_get_session_id()))
 ) {
 	api_not_allowed(true);
 }
@@ -393,7 +393,7 @@ $folders = DocumentManager::get_all_document_folders($_course, $to_group_id, $is
 // If we are not in the certificates creation, display a folder chooser for the
 // new document created
 
-if (!$is_certificate_mode && !is_my_shared_folder($userId, $dir, $current_session_id)) {
+if (!$is_certificate_mode && !DocumentManager::is_my_shared_folder($userId, $dir, $current_session_id)) {
 	$folders = DocumentManager::get_all_document_folders($_course, $to_group_id, $is_allowed_to_edit);
 
 	$parent_select = $form->addElement('select', 'curdirpath', array(null, get_lang('DestinationDirectory')));

main/document/document_lite.php

@@ -590,7 +590,7 @@ if ($is_allowed_to_edit) {
 
 /*	TEMPLATE ACTION */
 //Only teacher and all users into their group
-if ($is_allowed_to_edit || $group_member_with_upload_rights || is_my_shared_folder(api_get_user_id(), $curdirpath, $session_id)){
+if ($is_allowed_to_edit || $group_member_with_upload_rights || DocumentManager::is_my_shared_folder(api_get_user_id(), $curdirpath, $session_id)){
     if (isset($_GET['add_as_template']) && !isset($_POST['create_template'])) {
 
         $document_id_for_template = intval($_GET['add_as_template']);

main/inc/lib/document.lib.php

@@ -5784,7 +5784,7 @@ class DocumentManager
      * Checks whether the user is in shared folder
      * @return return bool Return true when user is into shared folder
      */
-    public function is_shared_folder($curdirpath, $current_session_id)
+    public static function is_shared_folder($curdirpath, $current_session_id)
     {
         $clean_curdirpath = Security::remove_XSS($curdirpath);
         if ($clean_curdirpath == '/shared_folder') {