Multistage Whenever configuration for Capistrano 3

multistage_whenever_capistrano_3.rb

# Capfile
require "whenever/capistrano"

# deploy.rb
set :whenever_environment, -> { fetch(:stage) }
set :whenever_identifier, -> { "#{fetch(:application)}_#{fetch(:stage)}" }

# schedule.rb
case @environment
when "staging"
  # every 15.minutes do...
when "production"
  # every 1.hour do...
end