.notEqual · fluentvalidation-ts

The .notEqual rule is used to ensure that the value of a given property is not equal to a given value.

Note that this rule uses strict inequality (i.e. the !== operator) and may not work as intended for object or array values.

Example

import { Validator } from 'fluentvalidation-ts';

type FormModel = {
  acceptsTermsAndConditions: boolean;
};

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

    this.ruleFor('acceptsTermsAndConditions').notEqual(false);
  }
}

const formValidator = new FormValidator();

formValidator.validate({ acceptsTermsAndConditions: true });
// ✔ {}

formValidator.validate({ acceptsTermsAndConditions: false });
// ❌ { acceptsTermsAndConditions: `Value must not equal 'false'` }

Reference

`.notEqual(comparisonValue: TValue)`

A base validation rule which takes in a value and ensures that the given property is not equal to that value.

`TValue`

Matches the type of the property that the rule is applied to.

Example Message

Value must not equal '[comparisonValue]'