List migrations in a rails project

db.rake

def list_migrations
  Dir['db/migrate/[0-9]*.rb'].sort_by { |f| File.basename(f).to_i }
end

namespace :db do
  namespace :migrate do
    namespace :list do
      desc 'List all paths to migration files starting with the last one'
      task :paths do
        puts list_migrations
      end

      desc 'List all versions of migration files starting with the last one'
      task :versions do
        puts list_migrations.map { |m|
          File.basename(m) =~ /(\d+)_?([^.]+)/ and "%u # %s" % $~.captures
        }
      end
    end
  end
end