Joi: Question: How to require a field only if another field is present?

[abeninskibede]

Hey guys,
I'm really trying to find how to make a validation of a field required only if another field has any value provided.
Having this schema:

{
 email: "[email protected]",
 id: 55555,
 idType: "passport"
}

I want to be able to say:
1) Specify either email or id or both of them.
2) If id is specified idType is required.

So...
This should be valid.

{
 email: "[email protected]",
 id: 55555,
 idType: "passport"
}

This should be valid too.

{
 email: "",
 id: 55555,
 idType: "passport"
}

This should NOT be:

{
 email: ""
 id: 55555,
 idType: ''
}

I tried some .when() code but in the when there is no way to say NOT SPECIFIED

      validate: {
        payload: Joi.object().keys({
          email: Joi.string().email().min(1),
          id: Joi.string().min(1),
          idType: Joi.number().when('id', {
            is: null,
            then: Joi.optional(),
            otherwise: Joi.number().required()
          })
        }).or('email', 'id')

Help me please.

[Marsup]

You should try with with.

[abeninskibede]

Hmm nice thank you. I'll try it

[abeninskibede]

Can't get it to work:
neither this:

        payload: Joi.object().keys({
          passportId: Joi.string().default(null),
          passportIdType: Joi.number().default(null)
        })
        .with('passportIdType', ['passportId'])

not that works:

        payload: Joi.object().keys({
          passportId: Joi.string().default(null),
          passportIdType: Joi.number().default(null)
        })
        .with('passportId', ['passportIdType'])

[AdriVanHoudt]

why is the second part of the with in between [ ]?

[abeninskibede]

Not working without [ ] either. Tried with and and it worked perfectly.

[Marsup]

null is a form of existence, you shouldn't default to that.

[shikasta-kashti]

Hi,

I'm trying to have a similar behavior and can't seem to figure out how should I do this.

My input consist of this:

{
    user_email: "[email protected]"
    profile: { ... },
    is_active: true,
    new_email_address: "dafasdf@asdfasd"
}

Now in above user_email is always required and if it is present then anyone from these ["profile", "is_active", "new_email_address"]should also be present.

Some examples:

This should be invalid:

{
    user_email: "[email protected]"
}

Valid:

{
    user_email: "[email protected]",
    is_active: true
}

likewise below should be valid too:

{
    user_email: "[email protected]",
    profile: { ... }
}

but this shouldn't be valid:

{
    profile: { ... },
    is_active: true,
    new_email_address: "dafasdf@asdfasd"
}

I have this:

var schema = Joi.object()
  .keys({ 
    user_email: Joi.string().email({ minDomainAtoms: 2 }).required(), 
    new_email_address: Joi.string().email(), 
    profile: Joi.object()
      .keys({ 
        first_name: Joi.string(), 
        last_name: Joi.string(), 
        gender: Joi.string(), 
        birth_date: Joi.string(), 
        phone_number: Joi.string(), 
        address: Joi.string(), 
        avatar_url: Joi.string() 
      }), 
    is_active: Joi.boolean() 
  })
  .nand('new_email_address', 'profile', 'is_active');

and this still passes as valid:

Joi.validate({ user_email: '[email protected]' }, schema, function(err, value) {console.log(err ? err: "valid!"); });

[augnin]

@shikasta-kashti use xor ?

var schema = Joi.object()
  .keys({ 
    user_email: Joi.string().email({ minDomainAtoms: 2 }).required(), 
    new_email_address: Joi.string().email(), 
    profile: Joi.object()
      .keys({ 
        first_name: Joi.string(), 
        last_name: Joi.string(), 
        gender: Joi.string(), 
        birth_date: Joi.string(), 
        phone_number: Joi.string(), 
        address: Joi.string(), 
        avatar_url: Joi.string() 
      }), 
    is_active: Joi.boolean() 
  })
  .xor('profile', 'is_active', 'new_email_address');

it throws following error for your test:

ValidationError: "value" must contain at least one of [profile, is_active, new_email_address]

[shikasta-kashti]

@sybt: hi, it seems to be working :)

kudos to you.

[ShaileshDevadiga]

I have a similar issue where I want to check conditional parameter using express-validation

Scenario:
{

"a":{

"id":"123456"

},
"b" : {
"id":"456789"
}
}

I want my JSON to have a value in either a or b or both.If both of them doesn't have any value it should return 400 bad request.

Can you help me with this situation?

[Marsup]

The answer is already in this thread.

[DavidTPate]

Closing due to inactivity.