Push notification using FCM for web app in Ruby on rails

Question

I have previously worked on push notifications with FCM for android app. From Firebase console i got server key to which my backend program hits when the notification were expected to be delivered. Also I could easily get the device token from the console(on client side) to which the server would send the push messages.

Now in similar way i would like to implement web push notification using FCM. Unfortunately, could not find FCM set up and implementation documentation using ruby. Besides bit confused as to how i can get the device token for web client to whom i would like to send push message/notification. What things do i need to look at and that i am missing?

I have come across web push gem and terms like VAPID keys and service worker but still confused how they work with FCM. If anyone could help me out with what i should be looking at and what i am missing. Thanks for reading this far.

Answer 1

Getting the FCM token for a device is only supported in client-side code. For web applications, see the documentation on getting the registration token. You can then pass the token from the client to Ruby backend, where you can store and use it to send a notification to that specific client.

To send a message to the token from your Ruby code, you can call the FCM REST API, after providing proof that your request is authorized with one of the methods outlined in the docs on authorizing send requests.

If you're having trouble making this work for your use-case, it's more likely that someone can help if you edit your question to show what you tried based on the above information and other existing resources.