Simple Validation for Vue

A simple Vue.js validation plugin by [email protected]

Setup

/**
 * <input type="text" maxlength="${n}"> validation.
 */
const text = {
  // Messages can be retrieved from Validation by validation group, or by individual validation id.
  message: 'Please enter some text.',
  // Valid if validate method returns true.
  validate: (value) => value.length > 0,
  // Get element's maxlength attribute when validator is registered.
  // Data method is xecuted once, when this validator is 'registered'/added to the Validation.
  data: (value, el) => {
    return { maxLength: el.querySelector('input').maxLength };
  },
  // Validation state is updated any time the validator is triggered.
  states: {
    characterlimit: {
      message: (value, old, data) => `${data.maxLength - value.length} characters remaining.`,
      validate: (value, old, data) => value.length <= data.maxLength
    }
  }
};

// set up validation
import Validation from './plugins/validation.js';
Vue.use(Validation);
Validation.add({ textarea });

All validation states can be applied as classes (by default, can be turned off). Default classes applied are invalid and pristine. All optional states are also applied as classes, using the key of the state as the classname.

Usage

<my-component id="unique-id" v-model="myValue" v-validation="customValidation"></my-component>

You can optionally group fields together:

<my-component id="unique-id" v-model="myValue" v-validation="customValidation" data-validation-group="GroupName"></my-component>

TODO

More docs