Validating nested array fields

currently it’s not possible to validate nested array fields, for example:

const myRecord = {
  translations: [
    {title: 'my record title', hint: 'my record hint'},
    {title: 'my record other title', hint: 'my record other hint'}
  ],
}

it’s not possible to apply validating to all of translations indexes.

something like this should work:

const validationSchema = {
  field: {
    'translations': [
      {
        validator: Validators.maxLength.validator,
        customArgs: { length: 5 }, // Valid translations for length lower than 5 item
      }
    ],
    'translations.*.title': [Validators.required.validator],
    'translations.*.hint': [Validators.required.validator],
  },
};

for more info please also see Lemoncode/fonk-formik#9

[brauliodiez]

We have news about this issue,

We have just released a Beta version including an ArrayValidator: https://github.com/Lemoncode/fonk/releases/tag/v1.4.0-beta.1

Example codesandbox: https://codesandbox.io/s/array-validator-formik-0c1dl?file=/form-validation.js

We are generating now more ellaborated examples.

Finally we have just created and ArrayValidator that is included in the main fonk library.

[jgoux]

I was going to make an issue about it. Arrays are quite common when dealing with a lot of many to many relationships.

The ArrayValidator seems like a great idea!