I want to create array of fields but to validate array elements customly

Hi guys,

I have a problem validating array of fields on my own, what I mean is that I have an array of fields where I don’t want to validate specific fields on index

const schema = Yup.object().shape({
  inviteUsers: Yup.array().of(Yup.object().shape({
    firstName: Yup.string().required(),
    lastName: Yup.string().required(),
    email: Yup.string().email().required(),
    userType: Yup.string().required(),
  })),
});

so, for example, I don’t what to validate the last element of the array of inviteUsers, how is it possible? I checked custom addMethod function but I didn’t find any viable solution

thank you in advance

[knicola]

you could also use .compact() if you can identify the last entry based on a fixed set of criteria. fyi, .validate() will exclude that entry from the returned value, but the original input will remain intact.

example:

const yup = require('yup')

const input = ['one', 'two', 'three']

const schema = yup
    .array()
    .compact((value) => value === 'three')
    .of(yup.string().matches(/one|two/i))

schema
    .validate(input)
    .then(console.log)
    .catch(console.error)

[beqramo]

@knicola I think I can use the last one, thanks for your time