File Drag/Drop Upload with Delete

This example component uses react-dropzone to allow for drag/drop uploading directly to Firebase storage. props.uploadFiles() provides the capability to update Firebase database with Files metadata, which is perfect for showing your upload results cleaning in the same component.

NOTE: The third argument provided to the uploadFiles and deleteFiles calls below is the database path where File Metadata will be written/deleted from. This is out of convenience only, simply remove the third argument if you don't want metadata written/deleted to/from database.

import React from 'react'
import PropTypes from 'prop-types'
import { map } from 'lodash'
import { useSelector } from 'react-redux'
import { useFirebase, useFirebaseConnect } from 'react-redux-firebase'
import Dropzone from 'react-dropzone'

// Path within Database for metadata (also used for file Storage path)
const filesPath = 'uploadedFiles'

export default function Uploader({ uploadedFiles, onFileDelete, onFilesDrop }) {
  const firebase = useFirebase()
  const uploadedFiles = useSelector(({ firebase: { data } }) => data[filesPath])

  function onFilesDrop(files) {
    return firebase.uploadFiles(filesPath, files, filesPath)
  function onFileDelete(file, key) {
    return firebase.deleteFile(file.fullPath, `${filesPath}/${key}`)

  return (
      <Dropzone onDrop={onFilesDrop}>
        <div>Drag and drop files here or click to select</div>
      {uploadedFiles && (
          <h3>Uploaded file(s):</h3>
          {map(uploadedFiles, (file, key) => (
            <div key={file.name + key}>
              <button onClick={() => onFileDelete(file, key)}>
                Delete File

Include File Metata Data

As described in the upload file section of the Firebase docs, it is possible to include file metadata while uploading. To do so, include the metadata property in the options object:

const storagePath = 'avatars'
const dbPath = 'avatarFilesInfo'
const fileMetadata = { contentType: 'image/jpeg' }

  .uploadFile(storagePath, file, dbPath, { metadata: fileMetadata })
  .then(() => {
    console.log('File uploaded successfully')

Change Info Stored In Database

When uploading files as in the above example, you can modify how the file's meta data is written to the database.

// within your createStore.js or store.js file include the following config
const config = {
  fileMetadataFactory: (uploadRes, firebase, metadata, downloadURL) => {
    // upload response from Firebase's storage upload
    const {
      metadata: { name, fullPath }
    } = uploadRes
    // default factory includes name, fullPath, downloadURL
    return {

Update Firestore Document

If using Firestore for you database and you would like to update a specific document after a file has uploaded you can specify the options.documentId property. In this example the document with id 12345 in the contacts collection will have the fileUrl property updated with the file's download url. More details can be found in the upload file section of the Firebase docs.

const storagePath = 'contacts/sleepygary'
const dbPath = 'contacts'

  .uploadFile(storagePath, file, dbPath, {
    metadataFactory: (uploadRes, firebase, metadata, downloadURL) => {
      return { fileUrl: downloadURL }
    documentId: '12345'
  .then(() => {
    console.log('File uploaded successfully')

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