rake tasks to help migrating from rails 1.x

rails1to2.rake

# by courtesy of
# - http://www.slashdotdash.net/2007/12/03/rails-2-upgrade-notes/
# - http://marklunds.com/articles/one/409

MOVE_COMMAND = "git mv"  

desc "Checks your app and gently warns you if you are using deprecated code."
task :deprecated => :environment do
  deprecated = {
    '@params'    => 'Use params[] instead',
    '@session'   => 'Use session[] instead',
    '@flash'     => 'Use flash[] instead',
    '@request'   => 'Use request[] instead',
    '@env' => 'Use env[] instead',
    'find_all'   => 'Use find(:all) instead',
    'find_first' => 'Use find(:first) instead',
    'render_partial' => 'Use render :partial instead',
    'component'  => 'Use of components are frowned upon',
    'paginate'   => 'The default paginator is slow. Writing your own may be faster',
    'start_form_tag'   => 'Use form_for instead',
    'end_form_tag'   => 'Use form_for instead',
    ':post => true'   => 'Use :method => :post instead'
  }

  deprecated.each do |key, warning|
    puts '--> ' + key
    output = `cd '#{File.expand_path('app', RAILS_ROOT)}' && grep -n --exclude=*.svn* -r '#{key}' *`
    unless output =~ /^$/
      puts "  !! " + warning + " !!"
      puts '  ' + '.' * (warning.length + 6)
      puts output
    else
      puts "  Clean! Cheers for you!"
    end
    puts
  end
end

namespace 'views' do     
  desc 'Renames all .rhtml views to .html.erb, .rjs to .js.rjs, .rxml to .xml.builder, and .haml to .html.haml'
  task 'rename' do
    {'rhtml' => 'html.erb', 'rxml' => 'xml.builder', 'rjs' => 'js.rjs'}.each do |from_ext, to_ext| 
      Dir[File.join('app/views', "**", "*.#{from_ext}")].each do |from_path|  
        to_path = from_path.chomp(from_ext) + to_ext   
        puts `#{MOVE_COMMAND} #{from_path} #{to_path}`
      end
    end
  end
end