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vuelidate

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Simple, lightweight model-based validation for Vue.js

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Features & characteristics:

  • Model based
  • Decoupled from templates
  • Dependency free, minimalistic library
  • Support for collection validations
  • Support for nested models
  • Contextified validators
  • Easy to use with custom validators (e.g. Moment.js)
  • Support for function composition
  • Validates different data sources: Vuex getters, computed values, etc.

Demo & docs

https://vuelidate.js.org/

Installation

npm install vuelidate --save

You can import the library and use as a Vue plugin to enable the functionality globally on all components containing validation configuration.

import Vue from 'vue'
import Vuelidate from 'vuelidate'
Vue.use(Vuelidate)

Alternatively it is possible to import a mixin directly to components in which it will be used.

import { validationMixin } from 'vuelidate'

var Component = Vue.extend({
  mixins: [validationMixin],
  validations: { ... }
})

The browser-ready bundle is also provided in the package.

<script src="vuelidate/dist/vuelidate.min.js"></script>
<!-- The builtin validators is added by adding the following line. -->
<script src="vuelidate/dist/validators.min.js"></script>
Vue.use(window.vuelidate.default)

Basic usage

For each value you want to validate, you have to create a key inside validations options. You can specify when input becomes dirty by using appropriate event on your input box.

import { required, minLength, between } from 'vuelidate/lib/validators'

export default {
  data () {
    return {
      name: '',
      age: 0
    }
  },
  validations: {
    name: {
      required,
      minLength: minLength(4)
    },
    age: {
      between: between(20, 30)
    }
  }
}

This will result in a validation object:

$v: {
  name: {
    "required": false,
    "minLength": false,
    "$invalid": true,
    "$dirty": false,
    "$error": false,
    "$pending": false
  },
  age: {
    "between": false
    "$invalid": true,
    "$dirty": false,
    "$error": false,
    "$pending": false
  }
}

Checkout the docs for more examples: https://vuelidate.js.org/

Contributing

# install dependencies
npm install

# serve with hot reload at localhost:8080
npm run dev

# create UMD bundle.
npm run build

# Create docs inside /gh-pages ready to be published
npm run docs

# run unit tests
npm run unit

# run all tests
npm test

For detailed explanation on how things work, checkout the guide and docs for vue-loader.

Contributors

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Emeriti

Here we honor past contributors who have been a major part on this project.

License

MIT

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Simple, lightweight model-based validation for Vue.js

vuelidate.js.org/

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