fonk-array-required-validator

This is a fonk microlibrary that brings validation capabilities to:

• Validate if an array field of a form has items

How to install it:

npm install @lemoncode/fonk-array-required-validator --save

How to add it to an existing form validation schema:

We have the following form model:

const myFormValues = {
  product : 'shoes',
  price: 20,
  sizes: [36, 38, 41]
}

We can add a arrayRequired validation to the myFormValues

import { arrayRequired } from '@lemoncode/fonk-array-required-validator';

const validationSchema = {
  field: {
    sizes: [arrayRequired.validator],
  },
};

We must specify the minimum number (1 by default) and optionally the maximum number of items allowed:

import { arrayRequired } from '@lemoncode/fonk-array-required-validator';
const validationSchema = {
  field: {
    sizes: [
      {
        validator: arrayRequired.validator,
        customArgs: { minLength: 1, maxLength: 10 },
      },
    ],
  },
};

You can customize the error message displayed in two ways:

• Globally, replace the default error message in all validationSchemas (e.g. porting to spanish):

import { arrayRequired } from '@lemoncode/fonk-array-required-validator';

arrayRequired.setErrorMessage('El campo debe de ser una lista');

• Locally just override the error message for this validationSchema:

import { arrayRequired } from '@lemoncode/fonk-array-required-validator';

const validationSchema = {
  field: {
    price: [
      {
        validator: arrayRequired.validator,
        message: 'Error message only updated for the validation schema',
      },
    ],
  },
};

Please, refer to fonk to know more.

License

MIT

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