How my admin panel works

# In config/routes.rb:

map.namespace :admin do |admin|
  admin.root :controller => :photographs
  admin.resources :albums
  admin.resources :categories
  admin.resources :photographs
  admin.resources :posts
end

# Inside /app/controllers I have a folder called admin, and inside that a controller called admin_controller.rb (/app/controllers/admin/admin_controller.rb):

class Admin::AdminController < ApplicationController
  # You can put things like :require_user in here, as it will affect the whole admin panel
end

# Then all my admin controllers extend the admin_controller, here's an example:

class Admin::AlbumsController < Admin::AdminController
  # Do stuff here!
end