Rake task to publish jekyll site to github page (master branch OR gh-pages with site namespace)

Rakefile

require "rubygems"
require "tmpdir"

require "bundler/setup"
require "jekyll"


# Change your GitHub reponame
GITHUB_REPONAME = "ksaynice/some_repo_name"

# desc "Generate blog files"
# task :generate do
#   Jekyll::Site.new(Jekyll.configuration({
#     "source"      => ".",
#     "destination" => "_site"
#   })).process
# end
#
#
# desc "Generate and publish blog to gh-pages"
# task :publish => [:generate] do
#   Dir.mktmpdir do |tmp|
#     cp_r "_site/.", tmp
#
#     pwd = Dir.pwd
#     Dir.chdir tmp
#
#     system "git init"
#     system "git add ."
#     message = "Site updated at #{Time.now.utc}"
#     system "git commit -m #{message.inspect}"
#     system "git remote add origin git@github.com:#{GITHUB_REPONAME}.git"
#     system "git push origin master --force"
#
#     Dir.chdir pwd
#   end
# end

namespace :site do
  desc "Generate blog files"
  task :generate do
    Jekyll::Site.new(Jekyll.configuration({
      "source"      => ".",
      "destination" => "_site"
    })).process
  end


  desc "Generate and publish blog to gh-pages"
  task :publish => [:generate] do
    Dir.mktmpdir do |tmp|
      cp_r "_site/.", tmp

      pwd = Dir.pwd
      Dir.chdir tmp

      system "git init"
      system "git add ."
      message = "Site updated at #{Time.now.utc}"
      system "git commit -m #{message.inspect}"
      system "git remote add origin git@github.com:#{GITHUB_REPONAME}.git"
      system "git push origin master:refs/heads/gh-pages --force"

      Dir.chdir pwd
    end
  end
end