rails active_storage:install IS NOT WORKING

Question

I have updated my rails api application from 5.1 to 5.2. I am using rails api only. I am trying to use the active storage. I think the problem is due to the line conf

Answer 1

The current rails official documents talks about the new application. But if you're upgrading a pre 5.2 app, you have to add or uncomment the field in application.rb

require "active_storage/engine"

For the new application, this will be already added.