This script create rails project without global environment. (bash script.) @require bundler(bundle command.) @Usage create_rails.sh {ProjectName} {RailsVersion} @example # create example_project with rails 4.0.0 bash create_rails.sh example_project 4.0.0

create_rails.sh

#!/bin/bash

# create new rails project in the version.
# create_rails.sh {project_name} [rails_version]
#
# @example
#   sh create_rails.sh nyaruko 4.0.0
# @author
#   alfa-jpn
#

# set current directory.
current_dir=`pwd`

# $1: error_message.
function exception(){
  clean_working_directory
  echo >&2 "aborted."
  echo >&2 $1
  exit 1;
}

# clean working directory.
function clean_working_directory(){
  echo "clean working directory $current_dir"
  rm_gemfile="$current_dir/Gemfile*"
  rm_bundle_dir="$current_dir/.bundle"
  rm_vendor_dir="$current_dir/vendor"

  echo "remove $rm_gemfile"
  rm -f  $rm_gemfile
  echo "remove $rm_bundle_dir"
  rm -rf $rm_bundle_dir
  echo "remove $rm_vendor_dir"
  rm -rf $rm_vendor_dir
}

# check bundler
command -v bundle > /dev/null 2>&1 || { exception "bundle is required."; }

# check params
if [ $# -ne 2 ]; then
  exception "usage: create_rails.sh {project_name} [rails_version]"
fi

# set params
app_name=$1
rails_version=$2
rails_gemfile="gem \"rails\", \"$rails_version\""
rails_project_dir="$current_dir/$app_name"
project_gitignore="$rails_project_dir/.gitignore"

# exec
bundle init || { exception "faild bundle init."; }
echo $rails_gemfile >> Gemfile

# install rails in ./vendor/bundle
bundle install --path vendor/bundle || {  exception "faild rails install."; }

# create rails project with local rails
bundle exec rails new $app_name --skip-bundle || { exception "faild create project."; }

# install gems in #{rails_project_dir}/vendor/bundle
( cd $rails_project_dir; bundle install --path vendor/bundle || { exit 1; } ) || { exception "faild gem install"; }

# add vendor to gitignore
echo "write $project_gitignore"
echo "vendor/bundle" >> $project_gitignore

# clean working directory
clean_working_directory

echo "finish!!"
exit 0