@lemoncode/fonk-match-field-validator

fonk-match-field-validator

This is a fonk microlibrary that brings validation capabilities to:

• Validate if a field of a form matchs with another field in same form.

How to add it to an existing form validation schema:

We have the following form model:

const myFormValues = {
  login: 'user1',
  password: 1234,
  confirmPassword: 1234,
};

We can add a matchField validation to the myFormValues

import { matchField } from '@lemoncode/fonk-match-field-validator';

const validationSchema = {
  field: {
    confirmPassword: [
      {
        validator: matchField.validator,
        customArgs: { field: 'password' },
      },
    ],
  },
};

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 { matchField } from '@lemoncode/fonk-match-field-validator';

matchField.setErrorMessage('El campo debe coincidir con {{field}}');

• Locally just override the error message for this validationSchema:

import { matchField } from '@lemoncode/fonk-match-field-validator';

const validationSchema = {
  field: {
    confirmPassword: [
      {
        validator: matchField.validator,
        customArgs: { field: 'password' },
        message: 'The field must match with {{field}}',
      },
    ],
  },
};

• Even if you have a nested field:

const myFormValues = {
  user: {
    name: 'user1',
    password: 1234,
    confirmPassword: 1234,
  },
};

• Overriding the message:

import { matchField } from '@lemoncode/fonk-match-field-validator';

const validationSchema = {
  field: {
    'user.confirmPassword': [
      {
        validator: matchField.validator,
        customArgs: { field: 'user.password' },
        message: 'The field must match with {{field}}',
      },
    ],
  },
};

Please, refer to fonk to know more.

License

MIT

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