ggplot2 transition guide (feb 2012)

Transition guide (Feb 2012) ggplot2

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Convert ERb into HAML (via rake)

install these gems:

haml-rails
ruby_parser
hpricot

#./lib/tasks/erb2haml.rake
desc "Creates haml files for each of the erb files found under views (skips existing)"
task :erb2haml do
  from_path = File.join(File.dirname(__FILE__), '..', '..', 'app', 'views')
  Dir["#{from_path}/**/*.erb"].each do |file|
    puts file
  # for each .erb file in the path, convert it & output to a .haml file
  output_file = file.gsub(/\.erb$/, '.haml')
  `bundle exec html2haml -ex #{file} #{output_file}` unless File.exist?(output_file)
 end
end

now run rake
and don't forget that its not rake erb2html, its rake erb2haml!

From:
here

PS:
gem 'ruby_parser'
gem 'hpricot'

set up git for the first use (with rails)

After installing the packages git-core and gitosis:

configure

git config --global user.name "username"
git config --global user.email "user@mail.com"
git config --global core.editor "emacs -w"

run

git init

customize the .gitignore file
examples here

add your project to git

git add . ## from your project folder

to see which files are in the staging area:

git status

to tell Git you want to keep the changes

git commit -m "initial commit"

list of commit messages:

git log

undo changes

git checkout -f ## -f flag to force overwriting the current changes

How to setup rails for postgres

Look here!