@lemoncode/fonk-chars-not-black-list-validator

fonk-chars-not-black-list-validator

This is a fonk microlibrary that brings validation capabilities to:

• Validate if a field of a form only contains valid characters.

How to install it:

npm install @lemoncode/fonk-chars-not-black-list-validator --save

How to add it to an existing form validation schema:

We have the following form model:

const myFormValues = {
  product: 'shoes',
  price: 20,
}

We can add a charsNotBlackList validation to the myFormValues. CustomArgs are required:

import { charsNotBlackList } from '@lemoncode/fonk-chars-not-black-list-validator';

const validationSchema = {
  field: {
    product: [
      {
        validator: charsNotBlackList.validator,
        customArgs: { blackListChars: 'nw5' },
      },
    ],
  },
};

Some characters will need to be escaped on the blacklist because they are used in a RegExp. For example, if you want to include backslash (\) or simple quote(') as blacklist characters you will need to escape them:

import { charsNotBlackList } from '@lemoncode/fonk-chars-not-black-list-validator';

const validationSchema = {
  field: {
    product: [
      {
        validator: charsNotBlackList.validator,
        customArgs: { blackListChars: 'n\'w\\5' },
      },
    ],
  },
};

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 { charsNotBlackList } from '@lemoncode/fonk-chars-not-black-list-validator';

charsNotBlackList.setErrorMessage('El campo contiene caracteres no válidos.');

• Locally just override the error message for this validationSchema:

import { charsNotBlackList } from '@lemoncode/fonk-chars-not-black-list-validator';

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

Please, refer to fonk to know more.

License

MIT

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