.rename() does not work when new value is undefined

[mgartner]

I have a case where I want to rename a field to override another field. If the value of the field being renamed is undefined, renaming does not work.

var Joi = require('joi');

var obj = { deleted: true }

var schema = Joi.object().rename('other', 'deleted', { override: true }).keys({ deleted: Joi.any().optional() });

Joi.validate(obj, schema, { stripUnknown: true }).value;
// => { deleted: true } instead of { }

[mgartner]

Also, is there a work around where I can convert a boolean into either true, or undefined? If the value is false, I basically want the key to be removed from the output object. That's really my overall goal.

[Marsup]

This should be fixed in 6.0.4.
If I understood you correctly, your schema should work like this :

var schema = Joi.object()
                .keys({
                    deleted: [
                        Joi.only(false).strip(),
                        Joi.boolean()
                    ]
                })
                .rename('other', 'deleted', { override: true });

This is using alternatives to strip the value you don't want.

[mgartner]

Thanks!