Consolidate pre-deployment tasks before shipping to Heroku

heroku.rake

namespace :heroku do
  
  desc "Deploy to Heroku"
  task :deploy => :prepare_deployment do
    system <<-EOF
      git push heroku master
    EOF
  end
  
  task :update_asset_packages do
    system <<-EOF
      rake asset:packager:build_all
      git commit -am 'updated packaged assets'
    EOF
  end
  
  task :update_sass do
    system <<-EOF
      rake sass:update
      git commit -am 'updated stylesheets and assets'
    EOF
  end
  
  task :prepare_deployment do
    system <<-EOF
      rake heroku:update_asset_packages
      rake heroku:update_sass
    EOF
  end

end

production.rb

# Supresses automatic updates of SASS so as not to offend your Heroku slug
Sass::Plugin.options[:never_update] = true

sass.rake

namespace :sass do
  
  desc 'Update SASS Stylesheets'
  task :update => :environment do
    Sass::Plugin.update_stylesheets
  end
  
end