custom scaffold slim views rails initializer file

custom_slim_scaffold.rb

if Rails.env.development?
  # copy templates from slim-rails to lib/generators/slim/scaffold/templates and customize
  module App
    class Application < ::Rails::Application
      generators do
        require 'generators/slim/scaffold/scaffold_generator'

        Slim::Generators::ScaffoldGenerator.class_eval do
          source_root File.expand_path('../../../lib/generators/slim/scaffold/templates', __FILE__)
        end
      end
    end
  end
end

change App to real app name