deploy.rb

namespace :deploy do
  desc "Deploy!!!!!!!"
  task :default do
    update
    restart
    #cleanup -- no more releases to clean up -- perhaps replace with one that removes anything after the last x commits ?
  end
  
  desc "Setup a GitHub-style deployment."
  task :setup, :except => { :no_release => true } do
    run "git clone #{repository} #{current_path}"
  end
  
  desc "Update the deployed code."
  task :update_code, :except => { :no_release => true } do

    run "cd #{current_path}; git fetch origin; git pull origin #{branch}" ## git reset #{branch} did not work ??
  end
  
  namespace "rollback" do
    desc "Rollback a single commit."
    task :code, :except => { :no_release => true } do
      run "cd #{current_path}; git reset --hard HEAD~1"
      deploy.restart
    end

    task :default do
      rollback.code
    end
  end
  
  desc 'no-op with gitty deployment'
  task :symlink do
    
  end
  
  task :migrate, :roles => :db, :only => { :primary => true } do
    rake = fetch(:rake, "rake")
    rails_env = fetch(:rails_env, "production")
    migrate_env = fetch(:migrate_env, "")
    migrate_target = fetch(:migrate_target, :latest)

    directory = case migrate_target.to_sym
      when :current then current_path
      when :latest  then current_path ## always set to current_path -- touched capistrano's code as little as possible
      else raise ArgumentError, "unknown migration target #{migrate_target.inspect}"
      end

    puts "#{migrate_target} => #{directory}"
    run "cd #{directory}; #{rake} RAILS_ENV=#{rails_env} #{migrate_env} db:migrate"
  end
end