How to translate AJV validation messages?

[gtamas]

I know this can be done using i18n-ajv.

So something like:

// application.ts

this.bind(RestBindings.REQUEST_BODY_PARSER_OPTIONS).to({
      validation: {
        ajvErrorTransformer: (errors: any[]): any[] => {
          localize.en(errors);
          return errors;
        },
      },
    });

This is called on every request. However, how do I detect the current locale? The request object doesn't get passed here..

[gtamas]

@bajtos @AaronJan
Any help please?

I found this old issue. That's where this solution was proposed.

#2146

However, I don't see how to detect the locale here. How can I transform the error message if I don't know the current locale.

[AaronJan]

Hi @gtamas , I did a little research but can't come up with any actionable solution right now...

I think the best way maybe is pass the Request object (or other context objects) to this function and all the way to the ajvErrorTransformer.

Or, we could find a way to add some contexts to the ajv.ErrorObject by customize validation logic (don't know how, haven't used LB4 recently so I basically forgot everything), then we can identify them in the ajvErrorTransformer function.

[gtamas]

Thanks for looking into this.

@bajtos
@raymondfeng
Any ideas? AJV is kinda everywhere, all models have validations. I guess i18n support would be important.