README

(simple installation example)

Generate new Rails 5 app with PostgresQL

rails new paperlab -d postgresql -T -B
cd paperlab
rvm --ruby-version use 2.3.3@paperlab --create

Gemfile

gem 'slim'
gem 'paperclip', '~> 5.0.0'

Bundler

gem install bundler --no-ri --no-rdoc
bundler

/config/database.yml

cd config
cp database.yml database_sample.yml

.gitignore

/config/database.yml

Git

git init
git add .
git ci -m init project
git remote add origin git@github.com:MyAccount/paperlab.git
git push -u origin master

Generate resource Course

rails g resource Course name:string

DB

rake db:migrate

Edit routes

root 'courses#index'
resources :courses, except: :show

Create simple Conroller and Views for Course (see the code)

Generate resource Material

rails g resource Material course:references

Edit routes

resources :courses, except: :show do
  resources :materials, except: :show
end

Course model

has_many :materials, dependent: :destroy

Generate Paperclip

Paperclip

rails g paperclip material file

DB

rake db:migrate

Material model

has_attached_file :file, styles: { thumb: "100x>" }
do_not_validate_attachment_file_type :file

Create simple Conroller and Views for Material (see code)

Edit routes

resources :courses, except: :show do
  resources :materials, except: :show
  patch :duplicate
end

Generate job (Active Job)

rails g job course_duplication

Course model

def duplicate
  CourseDuplicationJob.perform_now(self)
end

Courses controller

def duplicate
  @course = Course.find(params[:course_id])
  job = @course.duplicate
  flash[:notice] = "Task with job ID #{job} for course duplication add to workers queue"
  redirect_to courses_url
end

Add link to Course index view

td= link_to 'Duplicate', course_duplicate_path(course), method: :patch

Sidekiq

Sidekiq

Gemfile + Bundler

gem 'sidekiq'

PLug adapter sidekiq into /config/application.rb

config.active_job.queue_adapter = :sidekiq

Run job later in Course model

job = CourseDuplicationJob.perform_later(self)
job.provider_job_id

Redis server

Redis

sudo apt-get install redis-server

.gitignore

dump.rdb
/public/system/

Foreman

Foreman

gem install foreman

/procfile

rails: PORT=3000 rails s -b0
redis: redis-server
sidekiq: sidekiq

run servers

foreman start