Set up Firebase to upload user files

If you’ve read my previous post on uploading files to server, you might have noticed that it was not an easy task to achieve.

There is way too much boilerplate code for uploading a single file, and it will be much more complex in case we plan to upload multiple files, which I need to do for my project.

So what’s the solution to this?

ENTER FIREBASE!

Yeah, you read it right, Firebase once again to the rescue!

I came to know that firebase allows user to store and access the files easily to the built in storage.

Enough chatter for now, lets get to code!

Step 1 :

Add your project to Firebase from the console.

newProj.PNG

Click on the Blue button

Step 2 :

Add Firebase to your webapp

Open the project, you’ve just created and click on the bright red button that says, “ Add Firebase to your web app”

addFirebase.PNGCopy the contents from here and paste it after your HTML code.

Step 3 :

Open the “Storage” tab from the navigation drawer and navigate to the rules tab over there.
We need to set up specific rules as to who all can upload and read files to the storage bucket.

storageRules.PNG
For testing purposes, I’ve allowed everyone to read and write to my storage, but that shouldn’t be the case for your production app

Step 4 :

Add code for uploading your files.

First create a document selection widget and an upload button in your website’s index.html.

<tr>
<td valign=”top”>
<label for=”icon”>Zip File</label>
</td>
<td valign=”top”>
<input accept=”.zip” type=”file” id=”uploadZip” name=”icon”>
</td>
</tr>

Next, create a button to initiate the upload

<tr>
<td colspan=”5″ style=”text-align:center”>
<button type=”submit”>Upload Zip</button>
</td>
</tr>

Next up, inside the JavaScript, add a submitlistener for the submit button and call preventDefault inside it to prevent the form from doing the default action.

var form = document.querySelector(“form”);
form.addEventListener(“submit”, function(event) {
event.preventDefault();

Next up, get a reference to the upload location from your firebase storage bucket.

var timestamp = Number(new Date());
var storageRef = firebase.storage().ref(timestamp.toString());

Next, get the upload button from its ID and add its contents to a variable named file_data.

var $ = jQuery;
var file_data = $(‘#uploadZip’).prop(‘files’)[0];

Now upload that file to firebase.

storageRef.put(file_data);

If everything went as expected, you’ll be able to see the uploaded files onto your firebase console.

 storage

So, you can really appreciate the awesomeness of Firebase by now.
It has replaced the work done by over 50+ lines of code (spread around AJAX calls, PHP Scripts and JavaScript methods) by a single method call.

I would urge you to go through the documentation for more clarity on this.
https://firebase.google.com/docs/storage/

Well, that was it for now.
Next time, I’ll tell you how to retrieve the files back from the storage and add user’s details to Firebase Database.(Yeah, no need for Tables and SQL anymore!)

Cheers. 😀

Published by

the-dagger

Android Developer, Open Source Enthusiast