async fn get_status_row(
conn: &mut PgConnection,
user_id: Uuid,
chapter_id: Uuid,
course_id: Option<Uuid>,
course_locking_enabled: Option<bool>,
) -> ModelResult<Option<UserChapterLockingStatus>>async fn get_status_row(
conn: &mut PgConnection,
user_id: Uuid,
chapter_id: Uuid,
course_id: Option<Uuid>,
course_locking_enabled: Option<bool>,
) -> ModelResult<Option<UserChapterLockingStatus>>