Function headless_lms_models::pages::insert_page

pub async fn insert_page(
    conn: &mut PgConnection,
    new_page: NewPage,
    author: Uuid,
    spec_fetcher: impl SpecFetcher,
    fetch_service_info: impl Fn(Url) -> BoxFuture<'static, ModelResult<ExerciseServiceInfoApi>>
) -> ModelResult<Page>