Conditional validation of object properties with different parent key

[robs0n]

I'm trying to make sure, that the numeric value of an object property is not lesser than another numeric object property under a different parent key. I tried to use object.assert for this, but i did not get the expected results.

• node version: 4.4.7
• joi version: 9.2.0
• environment: node

const Joi = require('joi');

const schema = Joi.object().keys({
  a: Joi.object().keys({
    b: Joi.number()
  }),
  c: Joi.object().keys({
    d: Joi.number()
  })
}).assert('a.b', Joi.number().min(Joi.ref('c.d')), '"a.b" cannot be less than "c.d"');

const results = Joi.validate({
  a: {
    b: 2
  },
  c: {
    d: 1
  }
}, schema);

console.log(results);

Although a.b is greater than c.d, i get a validation error.
What am i doing wrong?

[WesTyler]

I've traced this down to https://github.com/hapijs/joi/blob/master/lib/number.js#L147

Looks like state is getting lost at one of the calls of https://github.com/hapijs/joi/blob/master/lib/any.js#L426 and state.parent ends up null, which results in compareTo being undefined.

Trying to figure out where state is getting dropped, but this goes several levels deeper than I've gone before and I wanted to share findings here in case something clicked for someone else faster.

[Marsup]

It's already fixed locally, don't bother with this one :)

[WesTyler]

Haha ok. I'm glad I took a look because I learned a bunch about refs. Interested to see what the fix ended up being when you push it. :)