pub async fn insert_course_prerequisites(
conn: &mut PgConnection,
course_id: Uuid,
new_prerequisites: Vec<String>,
) -> ModelResult<Vec<CoursePrerequisite>>pub async fn insert_course_prerequisites(
conn: &mut PgConnection,
course_id: Uuid,
new_prerequisites: Vec<String>,
) -> ModelResult<Vec<CoursePrerequisite>>