which is the best gem for push notifications on android with ruby on rails 4+?

Question

actually, i want to send push notification on submit button. when the user presses the button then on the android phone getting a push notification.

Answer 1

I have used gem 'fcm'

The FCM gem lets your ruby backend send notifications to Android and iOS devices via Firebase Cloud Messaging.

https://github.com/spacialdb/fcm