Run annotate and erd automatically when you db:migrate (rails)

doc.rake

namespace :doc do
  desc 'generate yardoc docs in doc/app/index.html'
  task :app do
    `yard doc -o doc/app`
    puts "see doc/app/index.html"
  end

  desc 'annotate models'
  task :annotate do
    run = ->(cmd){
      print "Running `#{cmd}` ";
      `#{cmd} 2>&1`
      puts $?.success? ? Rainbow('[OK]').green : Rainbow('[FAILED]').red
    }
    if Rails.env.development? && ENV['USER']!='jane'
      run.call('annotate --models --position bottom')
      run.call('annotate --routes --position bottom')
    end
  end
end

namespace :db do
  task :migrate do
    # This appends, it does not redefine.
    # Always run doc:annotate after db:migrate
    Rake::Task['doc:annotate'].invoke
  end
end