class ActiveAdmin::Reloader

development and once in production.
Deals with reloading Active Admin on each request in

def attach!

Attach to Rails and perform the reload on each request. 
def attach!
  # Bring the checker into local scope for the ruby block
  checker = file_update_checker
  reloader_class.to_prepare do
    checker.execute_if_updated
  end
end

def initialize(rails_app, active_admin_app, rails_version)

Parameters:
  • rails_version (String) -- The version of Rails we're using.
  • app (ActiveAdmin::Application) -- 
def initialize(rails_app, active_admin_app, rails_version)
  @rails_app = rails_app
  @active_admin_app = active_admin_app
  @rails_version = rails_version.to_s
  @file_update_checker = FileUpdateChecker.new(watched_paths) do
    reload!
  end
end

def reload! 

def reload!
  active_admin_app.unload!
  rails_app.reload_routes!
  file_update_checker.paths.clear
  watched_paths.each{|path| file_update_checker.paths << path }
end

def reloader_class 

def reloader_class
  if @rails_version[0..2] == '3.1'
    ActionDispatch::Reloader
  else
    ActionDispatch::Callbacks
  end
end

def watched_paths 

def watched_paths
  paths = active_admin_app.load_paths
  active_admin_app.load_paths.each{|path| paths += Dir[File.join(path, "**", "*.rb")]}
  paths
end