4.14.6 • Published 10 days ago

@vee-validate/joi v4.14.6

Weekly downloads
-
License
MIT
Repository
github
Last release
10 days ago

@vee-validate/joi

Official vee-validate integration with Joi schema validation

Guide

Joi is a feature rich validation library for the browser and nodejs

In their own words it is a:

The most powerful schema description language and data validator for JavaScript.

You can use joi as a typed schema with the @vee-validate/joi package:

# npm
npm install @vee-validate/joi
# yarn
yarn add @vee-validate/joi
# pnpm
pnpm add @vee-validate/joi

The @vee-valdiate/joi package exposes a toTypedSchema function that accepts any joi schema. Which then you can pass along to validationSchema option on useForm.

This makes the form values and submitted values typed automatically and caters for both input and output types of that schema.

import { useForm } from 'vee-validate';
import { object, string } from 'joi';
import { toTypedSchema } from '@vee-validate/joi';

interface FormData {
  email: string;
  password: string;
  name?: string;
}

const { values, handleSubmit } = useForm({
  validationSchema: toTypedSchema(
    object<FormData>({
      email: string().min(1).required().message('required'),
      password: string().min(1).message('required'),
      name: string().optional(),
    }),
  ),
});

// ❌ Type error, which means `values` is type-safe
values.email.endsWith('@gmail.com');

handleSubmit(submitted => {
  // No errors, because email is required!
  submitted.email.endsWith('@gmail.com');

  // ❌ Type error, because `name` is not required so it could be undefined
  // Means that your fields are now type safe!
  submitted.name.length;
});

Joi default values

You can also define default values on your joi schema directly and it will be picked up by the form:

import { useForm } from 'vee-validate';
import { object, string } from 'joi';
import { toTypedSchema } from '@vee-validate/joi';

const { values, handleSubmit } = useForm({
  validationSchema: toTypedSchema(
    object({
      email: string().default('something@email.com'),
      password: string().default(''),
    }),
  ),
});

Your initial values will be using the schema defaults, and also the defaults will be used if the values submitted is missing these fields.

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