.matches

The .matches rule is used to ensure that the value of a given string property matches the given regular expression.

Example

import { Validator } from 'fluentvalidation-ts';

type FormModel = {
  price: string;
};

class FormValidator extends Validator<FormModel> {
  constructor() {
    super();

    this.ruleFor('price').matches(new RegExp('^([0-9])+.([0-9]){2}$'));
  }
}

const formValidator = new FormValidator();

formValidator.validate({ price: '249.99' });
// ✔ {}

formValidator.validate({ price: '15' });
// ❌ { price: 'Value does not match the required pattern' }

Reference

.matches(pattern: RegExp)

A string validation rule which takes in a regular expression and ensures that the given property matches it.

Example Message

Value does not match the required pattern