React extensions for Backbone
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reactbone.js

README.md

Reactbone

Reactbone extends Backbone models and collections to better work with an immutable dependent such as React by exposing two subclasses ReactModel and ReactCollection. These classes expose methods to allow a data hierarchy to be easily built between models and collections and expose access to the entire state of an application designed in such a way.

Installation

NPM

npm install reactbone

Script

For the bundled version of Reactbone, use this repository's reactbone.js. It comes with its Backbone and Underscore dependencies.

<script src="reactbone.js"/>

To create the bundle, install via NPM and build it with the build command, which uses Browserify.

npm run build

Usage

Reactbone extends Backbone so it can be used anywhere Backbone would be used. The only difference is Reactbone adds its classes to Backbone.

var Reactbone = require('reactbone');

Reactbone.Model; // just Backbone.Model
Reactbone.ReactModel;
Reactbone.Collection; // just Backbone.Collection
Reactbone.ReactCollection; 

Integrating with React

Reactbone makes plugging into React.js as simple and expressive as possible.

var data = Application({name: 'color-me-shocked'}), // ReactModel
	view = React.createClass({...});

data.on('change', function(model) {
	var state = model.toReact();
	React.renderComponent(view(state), document.body);
});

Architecture

Reactbone is the middleground between Backbone and React. Any changes on the Backbone model hierarchy propogate up to Reactbone which then serializes the models into their JSON and helpers. That data can then be passed to React classes for rendering. Within React, helpers may be called (either manually or by user interaction) and may then change the underlying Backbone data, triggering the original data flow.

Dataflow

From the perspective of React, the data is immutable as an entirely new state is being passed to it on change from Backbone. The immutable data can also be used for snapshots, free undos and redos of application state, and all the other benefits of immutability. Yet, from the perspective of Backbone, the data is mutable and has the advantage of Underscore, Backbone, and plain JavaScript mutable functions. Reactbone harmonizes these two perspectives.

ReactModel

#property

  • property(name String) (Backbone.Model||Backbone.Collection)
  • property(name String, component (Backbone.Model||Backbone.Collection)) this
  • property(Object[name String]component(Backbone.Model||Backbone.Collection)) this

ReactModel needs to know which objects attached to the model should be included in the data hierarchy. The property method accepts a name String and a component which is either a Backbone Model or Collection (or a subclasss of them), or a map of them if you have multiple. If you only pass a name String, the component at model.properties[name] or undefined will be returned.

The component will be watched for changes and those changes will be reflected through the parent model in the change and change:#{name} events where name was the String provided to the method.

The component can then be accessed on the parent model via model[name] or model.name where name was the String provided to the method.

The component's properties can then be set directly via setting them on the parent model. For instance, calling model.set(name, {poop: 'poop'}); would be equivalent to calling model[name].set({poop: 'poop'}); Setting values on a component the former way will not trigger change:#{name} but instead change:_#{name} as to not double trigger on any model listening for change:#{name}.

var User = ReactModel.extend({
    initialize: function() {
        // setters
        this.property('posts', new Posts({parent: this}));
        this.property({
            likes: new Likes({parent: this}),
            comments: new Comments({parent: this})
        });
        // getter
        var posts = this.property('posts');
    }
});

#helper

  • helper(name String) Function
  • helper(name String, func Function) this
  • helper(Object[name String]func Function) this

Helpers are functions that will be added to the data representation of the model in the data hierarchy. These methods will allow React to communicate UI interactions back to the model. The helper method accepts a name String and a helper function, or a map of them if you have multiple. If a string is passed as a function parameter, the function at model[func] will be used. All functions are bound to the model with Underscore's bind function. If you only pass a name String, the function at model.helpers[name] or undefined will be returned.

var User = ReactModel.extend({
    initialize: function() {
        // setters
        this.helper('updateFirstName', this.updateFirstName);
        this.helper('updateLastName', function(newLastName) {
            this.set('lastName', lastName);
        });
        this.helper({
            helperOne: function() {},
            helperTwo: function() {}
        });
        // getter
        var helper = this.helper('updateFirstName');
    },
    updateFirstName: function(newFirstName) {
        this.set('firstName', newFirstName);
    }
});

#toReact

  • toReact() Object

This is the only external function to be called in order to use Reactbone with React. This function returns the data hierarchy of the model along with all of its attached properties and associated helper functions. This function will recursively call toReact on all of its properties, defaulting to toJSON if not found. Example usage:

var model = new Application({poop: 'poop'});

var root = document.getElementById('application'),
    view = React.renderComponent(ApplicationView({data: model.toReact()}), root);
    
model.on('change', function(model, options) {
    view.setProps({data: model.toReact()});
});

ReactCollection

ReactCollection is not very extensive, it only exposes the toReact method, which is needed to match the ReactModel API. All it does is map over the collection, calling each model's own toReact (or toJSON) method.

Contributing

Contributions are incredibly welcome as long as they are standardly applicable and pass the tests (or break bad ones). Tests are written in Mocha and assertions are done with the Node.js core assert module.

# running tests
npm run test
npm run test-spec # spec reporter

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