.ruleForEach

The .ruleForEach method on the Validator class is much like the .ruleFor method, except that is used to build up rule chains for array properties on your model.

You can use .ruleForEach to specify a rule chain that should apply to each element of a particular array property. Aside from this, the .ruleForEach method works almost exactly the same as the .ruleFor method, with all the chaining and configuration available in exactly the same way.

import { Validator } from 'fluentvalidation-ts';

type FormModel = { scores: Array<number> };

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

    this.ruleForEach('scores')
      .greaterThan(0)
      .withMessage('Please enter a positive score')
      .lessThanOrEqualTo(5)
      .withMessage('Please enter a score no greater than 5');
  }
}