How to Err NO_CONTENT with OpenAPI?

[ShayBox]

I have a database query that can optionally be None, other than returning Result<Option<Json<Vec<Value>>>>, how can I turn NO_CONTENT status code as an error?

[sunli829]

You have two ways:

async fn load_rows(&self) -> Result<Option<Json<Vec<Value>>>> {
   ...
}

Return error code directly

async fn get(&self) -> Result<Json<Vec<Value>>> {
    let res = load_rows().await?;
    res.ok_or_else(|| poem::Error::from_status(StatusCode::NO_CONTENT))
}

Define the response using the ApiResponse macro

Recommended, response status codes are shown in the documentation

#[derive(ApiResponse)]
enum MyResponse {
    #[oai(status = 200)]
    Ok(Json<Vec<Value>>),

    /// reason
    #[oai(status = 204)]
    NoContent,
}

async fn get(&self) -> Result<MyResponse > {
    Ok(match load_rows().await? {
        Some(rows) => MyResponse::Ok(rows),
        None => MyResponse::NoContent,
    })
}

[ShayBox]

Thank you