class User has_many :books, dependent: :destroy, inverse_of: :owner, foreign_key: 'owner_id' #**writers** # Users who are working on a book def self.writers joins(:books).uniq end #**not in writers** # Users who have not got any book def self.not_in_writers eager_load(:books).where(books:{id: nil}).uniq end #**authors** # Users who have at least a book published def self.authors joins(:books).where(books: {published_date: 'NOT NULL'}).uniq end #**not_in_authors** # Users who have not got any book published def self.not_in_authors eager_load(:books).where(books:{published_date: nil}).uniq end end class Book belongs_to :owner, class_name: "User", inverse_of: :books end

def match_mtd(mtd) /^\s*def (#{mtd})\s+((?!end).)*\s+end\s*$/m end gsub_file 'app/models/post.rb', match_mtd('create_permitted\?'), <<-CODE def \\1 acting_user.signed_up? end CODE gsub_file 'app/models/post.rb', match_mtd('update_permitted\?'), <<-CODE def \\1 owner_is? acting_user end CODE

rake rails:template LOCATION=../my_template

/^\s*def (#{mtd})\s+((?!end).)*\s+end\s*$/m

say ("Installing gems so that we can scaffold...") run 'bundle install' generate 'hobo:setup_wizard' if yes? "Wanna run hobo:setup_wizard?" generate 'hobo:resource', 'Post title:string text:text' inject_into_class 'app/models/post.rb', 'Post' do <<-EOS attr_accessible :title, :text default_scope :order => 'created_at DESC' validates :title, :presence => true, :length => { :minimum => 5 } EOS end route "root :to => 'posts#index'"

rails new demo_blog -m https://raw.github.com/gist/3378950/699589853464e4654ae7e5d183de126b11f4720f/template_umur_demo_blog.rb #Note that you need bundler and rails gems in your system or current rvm environment.

#Usage example: rails new demo_blog -m demo_blog_recipe.rb # Required gems gem 'therubyracer', :platforms => :ruby, :group=>:assets #Rails need gem 'inherited_resources' gem 'has_scope' append_file 'Gemfile' do <<-EOS git 'git://github.com/tablatom/hobo.git' do gem 'hobo_fields' #gem 'dryml' gem 'hobo_support' #gem 'hobo' end EOS end # Custom generators for DRY code append_file 'config/application.rb' do <<-EOS #{@app_name.camelize}::Application.configure do config.generators do |g| g.test_framework :shoulda g.fallbacks[:shoulda] = :test_unit g.fixture_replacement :factory_girl g.scaffold_controller :inherited_resources_controller g.orm 'hobo'.to_sym #TODO: Introduce steak/capybara for integration test end end EOS end git :init git :add => "." git :commit => "-a -m 'Initial commit'" #### # Let's make a demo blog now #### say ("Installing gems so that we can scaffold...") run 'bundle install' generate :scaffold, 'Post title:string text:text' route "root :to => 'posts#index'" inject_into_class 'app/models/post.rb', 'Post' do <<-EOS attr_accessible :title, :text default_scope :order => 'created_at DESC' validates :title, :presence => true, :length => { :minimum => 5 } EOS end inject_into_class 'app/controllers/posts_controller.rb', 'PostsController' do <<-EOS respond_to :html, :json EOS end rake("db:migrate") # More template commands are in # http://rdoc.info/github/wycats/thor/master/Thor/Actions.html

#Prerequisites of hobo gem 'will_paginate' gem 'jquery-rails' gem 'jquery-ui-themes' gem 'rails', '~>3.2'

#thor gemset:new target-gemset -s source-gemset thor gemset:new my-new-project -s my-hobo-edge-gemset

#Reference: http://asciicasts.com/episodes/216-generators-in-rails-3 DemoBlog::Application.configure do config.generators do |g| g.scaffold_controller :inherited_resources_controller g.orm :hobo end end

gem 'therubyracer', :platforms => :ruby

sudo apt-get install mesa-common-dev libopenal-dev libvorbis-dev libsndfile1-dev libfreeimage-dev libsdl1.2-dev libsdl-ttf2.0-dev freeglut3-dev libgl1-mesa-dev libglu1-mesa-dev freeglut3-dev libopengl-ruby1.9.1

rake notes:custom ANNOTATION=\(.*find_me.*\)

apt-get install redis-server

cd /tmp curl -O http://redis.googlecode.com/files/redis-2.2.2.tar.gz tar xzf redis-2.2.2.tar.gz cd redis-2.2.2 make sudo make install sudo cp utils/redis_init_script /etc/init.d/redis sudo mkdir /etc/redis sudo cp redis.conf /etc/redis/6379.conf

bash < <( curl http://rvm.beginrescueend.com/releases/rvm-install-head )

export rvm_pretty_print_flag=1 export rvm_project_rvmrc_default=1

rvm install 1.8.7 rvm --default use 1.8.7

rvm gemdir

grep -R 'def task' `rvm gemdir` | grep rake

rvm use @global gem install bundler gem install wirble #for irb gem install utility_belt #for_irb gem install jeweler gem install yard

#!/bin/bash source "$HOME/.rvm/scripts/rvm" rvm 1.8.7 rvm @rails2hobo --create echo Gemset: `rvm gemset name` gem install rails --version 2.3.11 gem install sqlite3-ruby --version 1.3.3 gem install will_paginate --version 2.3.11 gem install hobo --version 1.0.2 gem install haml --version 3.0.12 gem install dalli --version 1.0.2 gem install rspec --version 1.3.1 gem install rspec-rails --version 1.3.3 gem install steak --version 0.3.8 gem install capybara --version 0.4.1.2 gem install shoulda --version 2.11.3 gem install mocha --version 0.9.12 gem install factory_girl --version 1.3.3 # Other usual suspects for testing # gem install delorean --version 1.0.0 #Change Time.now in tests # gem install database_cleaner --version 0.6.4 #Remove data # gem install spork --version 0.8.4 #Solid test server # Fixing the gem versions because future versions might be Rails 2 incompatible

#!/bin/bash source "$HOME/.rvm/scripts/rvm" rvm @rails3hobo --create echo Gemset: `rvm gemset name` gem install rails gem install sqlite3-ruby gem install hobo --pre gem install haml gem install dalli gem install rspec-rails gem install steak gem install capybara gem install shoulda gem install mocha gem install factory_girl gem install delorean #Change Time.now in tests gem install database_cleaner #Remove data gem install spork --prerelease #Solid test server

rvm use system #Use the operating system installation rvm use 1.8.7 #Switching to global gems. Use global gems and use Ruby 1.8.7 rvm use @rails2 #use rails2 with current Ruby rvm use @rails3 #use rails3 with current Ruby rvm use 1.8.7@rails3 #use rails3 with Ruby 1.8.7 rvm gemdir

if [[ -n "$PS1" ]] ; then #Remember rmv does not like return # OTHER THINGS THAT YOU WANT TO HAVE function parse_git_branch { git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/(\1)/' } function rvm_gem_set { rvm gemset name | grep -v \/ } function proml { PROMPT_COMMAND='PS1="[$(date +%H:%M)]\ [\u@\h: **/\W] $(rvm_gem_set) $(parse_git_branch) $ "' PS2='> ' PS4='+ ' } proml [[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" # This loads rvm fi

source "http://rubygems.org/" gem "rails", "=2.3.11" gem "hobo", "=1.0.2" gem "haml", "=3.0.12" gem "will_paginate", ">=2.3.11" gem "dalli" gem "builder" gem "tzinfo" gem "system_timer" gem "sqlite3", :groups => [:test, :development] group :test do gem "factory_girl" gem "shoulda" gem "mocha" gem "rspec", "= 1.3.1", :require => nil gem "rspec-rails", "= 1.3.3", :require => nil gem "steak" gem "capybara" gem "delorean" #Change Time.now in tests gem "database_cleaner" #Remove data gem "spork", "~> 0.9.0.rc4" end gem 'ruby-debug', :groups => [:test, :development]

# ... run method modified and extend_environment method added class Boot def run load_initializer Rails::Initializer.run(:set_load_path) extend_environment end def extend_environment Rails::Initializer.class_eval do old_load = instance_method(:load_gems) define_method(:load_gems) do old_load.bind(self).call Bundler.require :default, RAILS_ENV end end end end # ...

#... Rails::Initializer.run do |config| #... require "active_support" #This line is added #...

class Pathname def empty? to_s.empty? end end # Fallback on doing the resolve at runtime.  require "rubygems" require "bundler" Bundler.setup

source "http://rubygems.org/" gem "rails" gem "will_paginate" gem "hobo", "~> 1.3.0.pre29" gem "haml" gem "dalli" gem "builder" gem "tzinfo" gem "system_timer" gem "pony" gem "sinatra" gem "vegas" gem "yajl-ruby" gem "redis-namespace" gem "redis" gem "sqlite3", :groups => [:test, :development] group :test do gem "factory_girl" gem "shoulda" gem "mocha" gem "rspec", :require => nil gem "rspec-rails", :require => nil gem "steak" gem "capybara" end gem 'ruby-debug', :groups => [:test, :development]

A=parent_class; B=child_class; grep -R :$B app/models/*.rb | grep has_many | grep $A; grep -R :$A app/models/*.rb | grep $B

./parent_class.rb: has_many :child_classes, :dependent=>:destroy ./child_class.rb: belongs_to :parent_class

./parent_class.rb: has_many :child_classes, :dependent=>:destroy

./parent_class.rb: has_many :child_classes, :dependent=>:nullify

./parent_class.rb: has_many :child_classes, :dependent=>:restrict

./parent_class.rb: has_many :child_classes, :nullify def destroy super if child_classes.empty? end

grep -R has_many app/models/*.rb

git status | grep deleted: | cut -d: -f2 | xargs git rm

rake test | grep test.rb | cut -d: -f1 | sed 's/\[//g'

rake test:units TEST=test/unit/one_of_them_tests rake test:functionals TEST=test/functional/one_of_them_tests

rake test | grep test.rb | cut -d: -f1 | sed 's/\[//g' | sed 's/\/test/.\/test/g' | xargs kate