constrain output to specfic language

[Sayed-Ameer]

When using BAML, is there a way to force the LLM to output exclusively in Arabic? Even with test cases in place, some words occasionally appear in other languages.
For context, other structured generation libraries like Outlines allow the use of character regex patterns to enforce language constraints. However, I prefer using BAML for its overall functionality.

[hellovai]

on way to do to this is to leverage our functionality to modify the prompt more carefully.

For example:

class Resume {
  name string @alias("<arabic for name>")
  ...
}

function InArabic(foo: string) -> Resume {
  client MyClient
  prompt #"
    < instructions in arabic >
    {{ ctx.output_format(prefix="<arabic>")
    {{ _.role('user') }}
    {{ foo }}
  "#
}

See more ways to modify any part of the prompt we inject here: https://docs.boundaryml.com/ref/prompt-syntax/ctx-output-format

See more ways to rename fields in your datamodels: https://docs.boundaryml.com/ref/attributes/alias

That said, i would also like to just support constrained generation here.