This is not a normal pattern for setting up ActionCable channels, so it might need some notes. It ensures the broadcasts from the ReportJob are unique not just to the user session but also to the specific tab in the user's browser. Otherwise if the user has two different report pages open in separate tabs with the same session, the broadcast would overwrite the #report-table element in both of them.
You can reach a development server under localhost, 127.0.0.1, 0.0.0.0
or other names you define in your environment. The reports were using
absolute links to localhost though and therefore breaking your session
(login) while navigating.
I'm not sure why this was done though. Sebastian didn't explain this in
the commit message and it may have been accidental.