Feature Request: String? getMessageByKey(String messageKey)

[henry2man]

TD;LR Read the title, I just want to have a dynamic way to resolve messages (if they exists) during runtime.

Full story:

I have a backend that is going to send both info & error messages using message-keys, ex: "{'id':302, 'error': 'itemNotFound'}". I want to dynamically resolve those keys using generated code but, for now, I don't have a method that can be used in order to solve the error message.

It would be great to have a method in the S class that would allow me to get the translated message if it exists, and if it doesn't, I can manually generate a generic message:

...
} catch BackendError {
  String? message  = getMessageByKey(errorKey);
  if(message == null) {
     print("ERROR: Unknown error: $errorKey")
  } else {
     print("ERROR: $message");
  }
}

Having such method probably will require the generation of a Map<String, String Function()> static member that will look like something like this:

{ 
  'itemNotFound': () => this.itemNotFound,
  'forbidden': () => this.forbidden,
  'notAuthorized': () => this.notAuthorized,
  ....
}

I've done something similar in bdlukaa/fluent_ui@b53288b#diff-ab7c9e25f588ae440e0de59542af84db24d60f230b9c7143d42b1afa9bc45da4R47 (In that case the motivation to generate a map was also to be able to search for the "icons" by name)

[jaumard]

That's indeed super interesting to add. If you can do a PR please do! If not I'll try to check that when I have some free time.