Important stuff

Necessary gems

• pg or mongoid (for a database)
• bootstrap-sass (Css Framework)
• devise (authentication)
• rspec (test framework)
• paperclip or carrierwave (image upload/file upload)
• letter_opener or letter_opener_web(opens letter into a new windows to debug outgoing mails)

AWS S3

• Region: eu-west-1
• a9s-railsvorlesung

user hat zugriff darin auf home/$username railsvorlesung8 auf a9s-railsvorlesung/home/railsvorlesung8/ schreiben

Environment Variables:

AWS_ACCESS_KEY_ID: <key>
AWS_SECRET_ACCESS_KEY: <secret>
AWS_REGION: 'eu-west-1'
AWS_BUCKET: a9s-railsvorlesung
AWS_PATH:  home/<username>

Paperclip config:

  config.paperclip_defaults = {
    :storage => :fog,
     :fog_credentials => {
       :provider              => "AWS",
       :region                => 'eu-west-1',
       :scheme                => 'https',
       :aws_access_key_id     => ENV['AWS_ACCESS_KEY_ID'],
       :aws_secret_access_key => ENV['AWS_SECRET_ACCESS_KEY']
     },
     :fog_host => "https://s3-eu-west-1.amazonaws.com/#{ENV['AWS_BUCKET']}/#{ENV['AWS_PATH']}"
  }

or

  config.paperclip_defaults = {
    :storage => :fog,
     :fog_credentials => {
       :provider              => "AWS",
       :region                => 'eu-west-1',
       :scheme                => 'https',
       :aws_access_key_id     => ENV['AWS_ACCESS_KEY_ID'],
       :aws_secret_access_key => ENV['AWS_SECRET_ACCESS_KEY']
     },
     :fog_directory => "#{ENV['AWS_BUCKET']}/#{ENV['AWS_PATH']}"
  }

Explorer for S3

cyberduck for windows and Mac https://cyberduck.io/

maybe try muCommander for Linux: https://wiki.ubuntuusers.de/Dateimanager/#muCommander

Pushto anynines /cloudfoundry

A9s Cheatsheet

define them into manifest.yml The manifest will be generated after the first cf push.

cf login -a https://api.aws.ie.a9s.eu

cf push

cf service (to list all created services)

cf create-server a9s-postgres postgres-single-small (to create a postgresserver for example)

cf marketplace (to list all possible services)

cf logs (to access the log files)

cf ssh (to connect via ssh to your app instance)

cf env (prints the OS environment variables)

cf run-task '<task to execute on server, for example bundle exec rake db:migrate>'

cf ssh -t -c "/tmp/lifecycle/launcher /home/vcap/app 'rails c' ''"

Optional and further informations

Usefull links

• http://guides.rubyonrails.org/ # explain all basics of Ruby on Rails
  • The Asset Pipeline
  • Layouts and Rendering in Rails
  • Active Record Query Interface
  • Active Record Validations
  • Active Record Associations
• http://railscasts.com/
• http://afreshcup.com/
• http://rubular.com/ # Interactive Regex Helper
• http://rubydoc.info/ # here exists documentation for mostly every ruby gem
• https://zealdocs.org/ # Offline Documentation for Win/Linux
• http://www.imagemagick.org/script/command-line-processing.php#option # Examples of Paperclip image size properties
• https://12factor.net/ # How to programm a good CloudFoundry / Anynines / Heroku App

Install Rails on Ubuntu:

• https://gorails.com/setup/ubuntu/16.04

RSpec Example:

• https://github.com/fgrehm/letter_opener_web/tree/master/spec

Usefull optional gems

• envyable or figaro (loads yaml file into environment variables for local development)

• better-errors (prints better readable error pages in development)

• rails-i18n (default translations for many languages)

• jquery-rails (if query is missing by bootstrap)

• bootstrap_form (provide FormBuilder for Bootstrap style)

• kaminari (pagination of a list of elements)

• clockwork (to manage tasks like cronjobs)

• activejob (for background processes, pls read the Rails Guide for further information)

• prawn (PDF generation)

Other Templating Engines

• haml-rails
• typescript-rails

Test Setup

• factory-girl-rails (creates test models)

• faker (provide Test-Data generation)

• guard (runs different tasks automatically if needed)

  • guard-rspec (runs tests if correspondig files changed)
  • guard-bundler (runs bundle install if Gemfile changed)

• shoulda-matchers (provide matchers for rspec tot est validatiosn for example)

• vcr (records web requests for store test conditions)