Add conf setting disabled_edit_session_coaches_course_editing_course - refs BT#13607

main/admin/course_edit.php

@@ -203,8 +203,9 @@ if (array_key_exists('add_teachers_to_sessions_courses', $courseInfo)) {
     );
 }
 
+$allowEditSessionCoaches = api_get_configuration_value('disabled_edit_session_coaches_course_editing_course') === false;
 $coursesInSession = SessionManager::get_session_by_course($courseInfo['real_id']);
-if (!empty($coursesInSession)) {
+if (!empty($coursesInSession) && $allowEditSessionCoaches) {
     foreach ($coursesInSession as $session) {
         $sessionId = $session['id'];
         $coaches = SessionManager::getCoachesByCourseSession(

main/install/configuration.dist.php

@@ -677,3 +677,5 @@ $_configuration['gradebook_badge_sidebar'] = [
 //$_configuration['allow_redirect_to_main_page_after_work_upload'] = false;
 // Empty the session student list when subscribing multiple users
 //$_configuration['not_empty_session_student_list_for_multiple_subscription'] = false;
+// Disable the option to set course coach in session when editing course
+//$_configuration['disabled_edit_session_coaches_course_editing_course'] = false;