Redux bindings for Firestore

redux-firestore

Redux bindings for Firestore. Provides low-level API used in other libraries such as react-redux-firebase

Installation

npm install redux-firestore --save

This assumes you are using npm as your package manager.

If you're not, you can access the library on unpkg, download it, or point your package manager to it. Theres more on this in the Builds section below

Complementary Package

Most likely, you'll want react bindings, for that you will need react-redux-firebase. You can install the current version it by running:

npm install --save react-redux-firebase

react-redux-firebase provides withFirestore and firestoreConnect higher order components, which handle automatically calling redux-firestore internally based on component's lifecycle (i.e. mounting/un-mounting)

Use

import { createStore, combineReducers, compose } from 'redux'
import { reduxFirestore, firestoreReducer } from 'redux-firestore'
import firebase from 'firebase/app'
import 'firebase/auth'
import 'firebase/database'
import 'firebase/firestore'

const firebaseConfig = {} // from Firebase Console

// Initialize firebase instance
firebase.initializeApp(firebaseConfig)
// Initialize Cloud Firestore through Firebase
firebase.firestore();

// Add reduxFirestore store enhancer to store creator
const createStoreWithFirebase = compose(
  reduxFirestore(firebase), // firebase instance as first argument
)(createStore)

// Add Firebase to reducers
const rootReducer = combineReducers({
  firestore: firestoreReducer
})

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

Then pass store to your component's context using react-redux's Provider:

import React from 'react';
import { render } from 'react-dom';
import { Provider } from 'react-redux';

render(
  <Provider store={store}>
    <MyRootComponent />
  </Provider>,
  rootEl
)

Call Firestore

Firestore Instance

Functional Components

It is common to make react components "functional" meaning that the component is just a function instead of being a class which extends React.Component. This can be useful, but can limit usage of lifecycle hooks and other features of Component Classes. recompose helps solve this by providing Higher Order Component functions such as withContext, lifecycle, and withHandlers.

import { connect } from 'react-redux'
import {
  compose,
  withHandlers,
  lifecycle,
  withContext,
  getContext
} from 'recompose'

const withStore = compose(
  withContext({ store: PropTypes.object }, () => {}),
  getContext({ store: PropTypes.object }),
)

const enhance = compose(
  withStore,
  withHandlers({
    loadData: props => () => props.store.firestore.get('todos'),
    onDoneClick: props => (key, done = false) =>
      props.store.firestore.update(`todos/${key}`, { done }),
    onNewSubmit: props => newTodo =>
      props.store.firestore.add('todos', { ...newTodo, owner: 'Anonymous' }),
  }),
  lifecycle({
    componentWillMount(props) {
      props.loadData()
    }
  }),
  connect(({ firebase }) => ({ // state.firebase
    todos: firebase.ordered.todos,
  }))
)

export default enhance(SomeComponent)

For more information on using recompose visit the docs

Component Class

import React, { Component } from 'react'
import PropTypes from 'prop-types'
import { connect } from 'react-redux'
import { watchEvents, unWatchEvents } from './actions/query'
import { getEventsFromInput, createCallable } from './utils'

class Todos extends Component {
  static contextTypes = {
    store: PropTypes.object.isRequired
  }

  componentWillMount () {
    const { firestore } = this.context.store
    firestore.get('todos')
  }

  render () {
    return (
      <div>
        {
          todos.map(todo => (
            <div key={todo.id}>
              {JSON.stringify(todo)}
            </div>
          ))
        }
      </div>
    )
  }
}

export default connect((state) => ({
  todos: state.firestore.ordered.todos
}))(Todos)

API

The store.firestore instance created by the reduxFirestore enhancer extends Firebase's JS API for Firestore. This means all of the methods regularly available through firebase.firestore() and the statics available from firebase.firestore are available. Certain methods (such as get, set, and onSnapshot) have a different API since they have been extended with action dispatching. The methods which have dispatch actions are listed below:

Actions

get

store.firestore.get({ collection: 'cities' }),
// store.firestore.get({ collection: 'cities', doc: 'SF' }), // doc

set

store.firestore.set({ collection: 'cities', doc: 'SF' }, { name: 'San Francisco' }),

add

store.firestore.add({ collection: 'cities' }, { name: 'Some Place' }),

update

const itemUpdates =  {
  some: 'value',
  updatedAt: store.firestore.FieldValue.serverTimestamp()
}

store.firestore.update({ collection: 'cities', doc: 'SF' }, itemUpdates),

delete

store.firestore.delete({ collection: 'cities', doc: 'SF' }),

runTransaction

store.firestore.runTransaction(t => {
  return t.get(cityRef)
      .then(doc => {
        // Add one person to the city population
        const newPopulation = doc.data().population + 1;
        t.update(cityRef, { population: newPopulation });
      });
})
.then(result => {
  // TRANSACTION_SUCCESS action dispatched
  console.log('Transaction success!');
}).catch(err => {
  // TRANSACTION_FAILURE action dispatched
  console.log('Transaction failure:', err);
});

Types of Queries

get

props.store.firestore.get({ collection: 'cities' }),
// store.firestore.get({ collection: 'cities', doc: 'SF' }), // doc

onSnapshot/setListener

store.firestore.onSnapshot({ collection: 'cities' }),
// store.firestore.setListener({ collection: 'cities' }), // alias
// store.firestore.setListener({ collection: 'cities', doc: 'SF' }), // doc

setListeners

store.firestore.setListeners([
  { collection: 'cities' },
  { collection: 'users' },
]),

Query Options

Collection

{ collection: 'cities' },
// or string equivalent
// store.firestore.get('cities'),

Document

{ collection: 'cities', doc: 'SF' },
// or string equivalent
// props.store.firestore.get('cities/SF'),

Sub Collections

{ collection: 'cities', doc: 'SF', subcollections: [{ collection: 'zipcodes' }] },
// or string equivalent
// props.store.firestore.get('cities/SF'),

Note: When nesting sub-collections, storeAs should be used for more optimal state updates.

Where

To create a single where call, pass a single argument array to the where parameter:

{
  collection: 'cities',
  where: ['state', '==', 'CA']
},

Multiple where queries are as simple as passing multiple argument arrays (each one representing a where call):

{
  collection: 'cities',
  where: [
    ['state', '==', 'CA'],
    ['population', '<', 100000]
  ]
},