react-redux-firebase

Redux bindings for Firebase. Includes Higher Order Component (HOC) for use with React.

Demo

View deployed version of Material Example here

Features

• Integrated into redux
• Support for updating and nested props
• Population capability (similar to mongoose's populate or SQL's JOIN)
• Out of the box support for authentication (with auto load user profile)
• Firebase Storage Support
• Support small data ( using value ) or large datasets ( using child_added, child_removed, child_changed )
• queries support ( orderByChild, orderByKey, orderByValue, orderByPriority, limitToLast, limitToFirst, startAt, endAt, equalTo right now )
• Automatic binding/unbinding
• Declarative decorator syntax for React components
• redux-thunk and redux-observable integrations
• Action Types and other Constants exported for external use (such as in redux-observable)
• Firebase v3+ support

Install

npm install --save react-redux-firebase

Before Use

Peer Dependencies

Install peer dependencies: npm i --save redux react-redux

Decorators

Though they are optional, it is highly recommended that you used decorators with this library. The Simple Example shows implementation without decorators, while the Decorators Example shows the same application with decorators implemented.

A side by side comparison using react-redux's connect function/HOC is the best way to illustrate the difference:

class SomeComponent extends Component {

}
export default connect()(SomeComponent)

vs.

@connect()
export default class SomeComponent extends Component {

}

In order to enable this functionality, you will most likely need to install a plugin (depending on your build setup). For Webpack and Babel, you will need to make sure you have installed and enabled babel-plugin-transform-decorators-legacy by doing the following:

1. run npm i --save-dev babel-plugin-transform-decorators-legacy
2. Add the following line to your .babelrc:

{
    "plugins": ["transform-decorators-legacy"]
}

Use

Include reduxFirebase in your store compose function:

import { createStore, combineReducers, compose } from 'redux'
import { reactReduxFirebase, firebaseStateReducer } from 'react-redux-firebase'

// Add Firebase to reducers
const rootReducer = combineReducers({
  firebase: firebaseStateReducer
})

// Firebase config
const config = {
  apiKey: '<your-api-key>',
  authDomain: '<your-auth-domain>',
  databaseURL: '<your-database-url>',
  storageBucket: '<your-storage-bucket>'
}

// Add redux Firebase to compose
const createStoreWithFirebase = compose(
  reactReduxFirebase(config, { userProfile: 'users' }),
)(createStore)

// Create store with reducers and initial state
const store = createStoreWithFirebase(rootReducer, initialState)

In components:

import React, { Component, PropTypes } from 'react'
import { connect } from 'react-redux'
import { firebaseConnect, helpers } from 'react-redux-firebase'
const { isLoaded, isEmpty, dataToJS } = helpers

@firebaseConnect( [
  '/todos'
  // { type: 'once', path: '/todos' } // for loading once instead of binding
])
@connect(
  ({ firebase }) => ({
    // Connect todos prop to firebase todos
    todos: dataToJS(firebase, '/todos'),
  })
)
export default class Todos extends Component {
  static propTypes = {
    todos: PropTypes.object,
    firebase: PropTypes.object
  }

  render() {
    const { firebase, todos } = this.props;

    // Add a new todo to firebase
    const handleAdd = () => {
      const {newTodo} = this.refs
      firebase.push('/todos', { text:newTodo.value, done:false })
      newTodo.value = ''
    }

    // Build Todos list if todos exist and are loaded
    const todosList = !isLoaded(todos)
      ? 'Loading'
      : isEmpty(todos)
        ? 'Todo list is empty'
        : Object.keys(todos).map(
            (key, id) => (
              <TodoItem key={key} id={id} todo={todos[key]}/>
            )
          )

    return (
      <div>
        <h1>Todos</h1>
        <ul>
          {todosList}
        </ul>
        <input type="text" ref="newTodo" />
        <button onClick={handleAdd}>
          Add
        </button>
      </div>
    )
  }
}

Alternatively, if you choose not to use decorators:

const wrappedTodos = firebaseConnect([
  '/todos'
])(Todos)
export default connect(
  ({firebase}) => ({
    todos: dataToJS(firebase, '/todos'),
  })
)(wrappedTodos)

Documentation

See react-redux-firebase.com

• Getting Started
• Auth
• Queries
• Populate
• API Reference

Examples

Examples folder is broken into two categories complete and snippets. Complete contains full applications that can be run as is, where as snippets is small amounts of code to show functionality (dev tools and deps not included).

State Based Query Snippet

Snippet showing querying based on data in redux state. One of the most common examples of this is querying based on the current users auth UID.

Decorators Snippet

Snippet showing how to use decorators to simplify connect functions (redux's connect and react-redux-firebase's firebaseConnect)

Simple App Example

A simple example that was created using create-react-app's. Shows a list of todo items and allows you to add to them.

Material App Example

An example that user Material UI built on top of the output of create-react-app's eject command. Shows a list of todo items and allows you to add to them. This is what is deployed to redux-firebasev3.firebaseapp.com.

Discussion

Join the redux-firebase gitter.

Using with redux-thunk

If you are using redux-thunk, make sure to set up your thunk middleware using it's redux-thunk's withExtraArgument method so that firebase is available within your actions. Here is an example createStore function that adds getFirebase as third argument along with a thunk that uses it:

createStore:

import { applyMiddleware, compose, createStore } from 'redux';
import thunk from 'redux-thunk';
import { reactReduxFirebase, getFirebase } from 'react-redux-firebase';
import makeRootReducer from './reducers';

const fbConfig = {} // your firebase config
const config = {
  userProfile: 'users',
  enableLogging: false
}
const store = createStore(
  makeRootReducer(),
  initialState,
  compose(
    applyMiddleware([
      thunk.withExtraArgument(getFirebase) // Pass getFirebase function as extra argument
    ]),
    reactReduxFirebase(fbConfig, )
  )
);

Action:

const sendNotification = (payload) => {
  type: NOTIFICATION,
  payload
}
export const addTodo = (newTodo) =>
  (dispatch, getState, getFirebase) => {
    const firebase = getFirebase()
    firebase
      .push('todos', newTodo)
      .then(() => {
        dispatch(sendNotification('Todo Added'))
      })
  };

Using with redux-observable

If you are using redux-observable, make sure to set up your redux-observable middleware so that firebase is available within your epics. Here is an example combineEpics function that adds getFirebase as third argument along with an epic that uses it:

import { getFirebase } from 'react-redux-firebase'
import { combineEpics } from 'redux-observable'

const rootEpic = (...args) =>
  combineEpics(somethingEpic, epic2)(..args, getFirebase)

// then later in your epics
const somethingEpic = (action$, store, getFirebase) =>
  action$.ofType(SOMETHING)
    .map(() =>
      getFirebase().push('somePath/onFirebase', { some: 'data' })
    )

Generator

generator-react-firebase uses react-redux-firebase when opting to include redux

FAQ

1. How is this different than redux-react-firebase?

This library was actually originally forked from redux-react-firebase, but adds extended functionality such as:

• populate functionality (similar to mongoDB or SQL JOIN)
• profileDecorator - change format of profile stored on Firebase
• getFirebase - access to firebase instance that fires actions when methods are called
• integrations for redux-thunk and redux-observable - using getFirebase
• access to firebase's storage method`
• uniqueSet method helper for only setting if location doesn't already exist
• Object or String notation for paths ([{ path: '/todos' }] equivalent to ['/todos'])
• Action Types and other Constants are exposed for external usage (such as with redux-observable)

Well why not combine?

I have been talking to the author of redux-react-firebase about combining, but we are not sure that the users of both want that at this point. Join us on the redux-firebase gitter if you haven't already since a ton of this type of discussion goes on there.

Bottom line: The author of redux-react-firebase was absent when functionality was needed by me and others, so this library was created.

2. Why use redux if I have Firebase to store state?

This isn't a super quick answer, so I wrote up a medium article to explain

Contributors

• Prescott Prue
• Tiberiu Craciun
• Bojhan
• Rahav Lussto
• Justin Handley

Thanks

Special thanks to Tiberiu Craciun for creating redux-react-firebase, which this project was originally based on.