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        public function saveAll(Course $Course, CourseGoals $CourseGoals){
                // delete the existing course goals and add the array of new ones for a course
                $current = $this->findCourseGoalsByCourse($Course);
                $new = $CourseGoals;
                foreach ($current as $deletegoal=>$goal){
                        $this->delete($Course,$goal[0]);
                }
                $i = 0;
                foreach ($new as $newgoal=>$goal){
                        $this->save($Course,$goal[$i]);
                        $i++;
                }
        }