Backend

Nearly all guidelines are documented using rust-clippy, so this document is kept short.

• Always derive Debug and Clone (but beware of deriving Copy).
• Actions must be created in backend/src/model/dto/actions.rs.
• We reuse the global http client like this: let server = HttpServer::new(move || { App::new() /*other initialization code*/ .app_data(http_client.clone()) }).
• Read also about backend logging.

Serialization

• In case struct properties of type Option<T> have value None, they should be serialized as missing properties instead of null values.
  This is a workaround for an open typeshare issue.
  Such serialization can be achieved by adding serde skip_serializing_if attribute on such property: #[serde(skip_serializing_if = "Option::is_none")]