Reactive MobX Form State Management

MobX React Form

Reactive MobX Form State Management.

Features

Extensibles Validation Plugins.
Sync & Async Validation (w/ Promises & automatic errors).
Nested Fields (w/ Serialization & Validation).
Nested Forms (w/ Nested Submission & Validation Hooks).
Event Hooks, Event Handlers & Validation Hooks
Observers & Interceptors
Bindings for custom Components.
Support for Material UI, React Widgets, React Select & more.
Dedicated DevTools Package.

Quick Start

npm install --save mobx-react-form

Choose and Setup a Validation Plugin

See Validation Plugins for more info on supported packages.

Below we are creating a plugins object using the validatorjs package to enable DVR functionalities (Declarative Validation Rules).

import dvr from 'mobx-react-form/lib/validators/DVR';
import validatorjs from 'validatorjs';

const plugins = {
  dvr: dvr(validatorjs)
};

Define the Form Fields

Define the fields as a collection with a rules property for the validation.

const fields = [{
  name: 'email',
  label: 'Email',
  placeholder: 'Insert Email',
  rules: 'required|email|string|between:5,25',
}, {
  name: 'password',
  label: 'Password',
  placeholder: 'Insert Password',
  rules: 'required|string|between:5,25',
}, {
  name: 'passwordConfirm',
  label: 'Password Confirmation',
  placeholder: 'Confirm Password',
  rules: 'required|string|same:password',
}];

You can also define fields as an object.

Define the Validation Hooks

const hooks = {
  onSuccess(form) {
    alert('Form is valid! Send the request here.');
    // get field values
    console.log('Form Values!', form.values());
  },
  onError(form) {
    alert('Form has errors!');
    // get all form errors
    console.log('All form errors', form.errors());
  }
}

Initialize the Form

Simply pass the fields, plugins and hooks objects to the constructor

import MobxReactForm from 'mobx-react-form';

const form = new MobxReactForm({ fields }, { plugins, hooks });

Pass the form to a react component

The package provide some built-in and ready to use Event Handlers:

onSubmit(e), onClear(e), onReset(e) & more...

import React from 'react';
import { observer } from 'mobx-react';

export default observer(({ form }) => (
  <form onSubmit={form.onSubmit}>
    <label htmlFor={form.$('email').id}>
      {form.$('email').label}
    </label>
    <input {...form.$('email').bind()} />
    <p>{form.$('email').error}</p>

    {/* ... other inputs ... */}

    <button type="submit" onClick={form.onSubmit}>Submit</button>
    <button type="button" onClick={form.onClear}>Clear</button>
    <button type="button" onClick={form.onReset}>Reset</button>

    <p>{form.error}</p>
  </form>
));

Other Field Props are available. See the docs for more details.

Extending the Form class

See how to implement the same configuration of this quickstart extending the Form class