JAspeling/ng-form-validator

Form validation builder for Angular projects

Validation Builder

Built with one purpose - Make Reactive form validation in Angular easier to use.

• Validation Builder
  • - Extending validators
• Getting started
  • Install the library
  • Start using the validators
• Combining Validators
• How it works behind the scenes
• Extending validators

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Getting started

Take a look at the live demo to play around with the validators

Install the library

npm i ng-form-validator-builder

Start using the validators

You can add validators using the formBuilder to create a form:

const nextWeek: Date = new Date();
nextWeek.setDate(new Date().getDate() + 7);

const form = new FormBuilder().group({
    someDate: [new Date(), DateValidator.isBefore(nextWeek),
    anotherDate: [new Date(), DateValidator.isBefore(nextWeek, 'With a custom error message'),
    clientName: ['', StringValidator.maxLengthAllowed('25', 'Name is too long!')],
    email: ['', [
        GenericValidator.isRequired('Email is required'),
        stringValidator.email('Please provide a valid email address :)')
        ]
    ],
    age: [0, NumericValidator.greaterThan(18, 'You need to be older than 18!')
});

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More examples

See the live demo for informaion on using the validators