until step 5

app/jobs/application_job.rb

+class ApplicationJob < ActiveJob::Base
+end

app/mailers/application_mailer.rb

+class ApplicationMailer < ActionMailer::Base
+  default from: 'from@example.com'
+  layout 'mailer'
+end

app/models/application.rb

-class Application < ActiveRecord::Base
+class Application < ApplicationRecord
   belongs_to :user
 
   validates :domain, presence: true, uniqueness: true

app/models/application_record.rb

+class ApplicationRecord < ActiveRecord::Base
+  self.abstract_class = true
+end

app/models/bookmark.rb

@@ -10,7 +10,7 @@
 #  updated_at        :datetime         not null
 #
 
-class Bookmark < ActiveRecord::Base
+class Bookmark < ApplicationRecord
   # Example of Trackable:
   # *current_user* create bookmark *bookmarkable*
   include Trackable

app/models/carousel.rb

@@ -13,7 +13,7 @@
 #  image_updated_at   :datetime
 #
 
-class Carousel < ActiveRecord::Base
+class Carousel < ApplicationRecord
   has_attached_file :image, styles: {
     larger: "600x600>",
     thumbnail: "100x100>"

app/models/collection.rb

@@ -22,7 +22,7 @@
 #  thumbnail_updated_at   :datetime
 #
 
-class Collection < ActiveRecord::Base
+class Collection < ApplicationRecord
   include Reviewable
   include Sociable
   include Followable

app/models/collection_item.rb

@@ -11,7 +11,7 @@
 #  updated_at          :datetime         not null
 #
 
-class CollectionItem < ActiveRecord::Base
+class CollectionItem < ApplicationRecord
   # *current_user* add item *collectionable* to *collection*
   include Trackable
 

app/models/complaint.rb

@@ -12,7 +12,7 @@
 #  updated_at          :datetime         not null
 #
 
-class Complaint < ActiveRecord::Base
+class Complaint < ApplicationRecord
   # *current_user* create complaint about *complaint_reason* for *complaintable*
   include Trackable
 

app/models/complaint_reason.rb

@@ -8,7 +8,7 @@
 #  updated_at :datetime         not null
 #
 
-class ComplaintReason < ActiveRecord::Base
+class ComplaintReason < ApplicationRecord
   # *current_user* create complaint reason
   # Only admins can create complaint reasons
   include Trackable

app/models/download.rb

@@ -10,7 +10,7 @@
 #  updated_at        :datetime         not null
 #
 
-class Download < ActiveRecord::Base
+class Download < ApplicationRecord
   # *current_user* download *downloadable*
   include Trackable
 

app/models/follow.rb

@@ -10,7 +10,7 @@
 #  updated_at      :datetime         not null
 #
 
-class Follow < ActiveRecord::Base
+class Follow < ApplicationRecord
   # *current_user* follows *followable*
   include Trackable
 

app/models/institution.rb

@@ -12,7 +12,7 @@
 #  updated_at  :datetime         not null
 #
 
-class Institution < ActiveRecord::Base
+class Institution < ApplicationRecord
   include Tagger
 
   # *current_user* add member for instituion *name*

app/models/language.rb

@@ -9,7 +9,7 @@
 #  code       :string
 #
 
-class Language < ActiveRecord::Base
+class Language < ApplicationRecord
   has_many :learning_objects
 
   validates_uniqueness_of :code

app/models/learning_object.rb

@@ -30,7 +30,7 @@
 #  attachment_id          :integer
 #
 
-class LearningObject < ActiveRecord::Base
+class LearningObject < ApplicationRecord
   include Metadatable
   include Reviewable
   include Sociable

app/models/learning_object/attachment.rb

@@ -22,7 +22,7 @@
 #  cache_link             :string
 #
 
-class LearningObject::Attachment < ActiveRecord::Base
+class LearningObject::Attachment < ApplicationRecord
   include ::Thumbnailable
   belongs_to :learning_object
   scope :unknown_mime_type, ->() { where(format: 'Unknown') }

app/models/license.rb

-class License < ActiveRecord::Base
+class License < ApplicationRecord
   validates :name, presence: true
 end

app/models/like.rb

@@ -10,7 +10,7 @@
 #  updated_at    :datetime         not null
 #
 
-class Like < ActiveRecord::Base
+class Like < ApplicationRecord
   # *current_user* likes *likeable*
   # *current_user* unlikes *likeable*
   include Trackable

app/models/mime_type.rb

@@ -7,6 +7,6 @@
 #  mime_type :string
 #
 
-class MimeType < ActiveRecord::Base
+class MimeType < ApplicationRecord
   has_and_belongs_to_many :object_types
 end

app/models/object_type.rb

-class ObjectType < ActiveRecord::Base
+class ObjectType < ApplicationRecord
   has_many :learning_objects
   has_and_belongs_to_many :mime_types
 

app/models/rate.rb

@@ -8,7 +8,7 @@
 #  review_id  :integer
 #  created_at :datetime         not null
 #  updated_at :datetime         not null
-class Rate < ActiveRecord::Base
+class Rate < ApplicationRecord
   # *current_user* rate a review *review*
   include Trackable
 

app/models/rating.rb

@@ -9,7 +9,7 @@
 #  description :string
 #
 
-class Rating < ActiveRecord::Base
+class Rating < ApplicationRecord
   has_many :review_ratings
   has_many :reviews, through: :review_ratings
 end

app/models/review.rb

@@ -15,7 +15,7 @@
 #  rates_count     :integer          default("0")
 #
 
-class Review < ActiveRecord::Base
+class Review < ApplicationRecord
   # *current_user* review *reviewable*
   include Trackable
 

app/models/review_rating.rb

@@ -10,7 +10,7 @@
 #  updated_at :datetime         not null
 #
 
-class ReviewRating < ActiveRecord::Base
+class ReviewRating < ApplicationRecord
   belongs_to :review
   belongs_to :rating
 

app/models/role.rb

@@ -9,7 +9,7 @@
 #  updated_at  :datetime         not null
 #
 
-class Role < ActiveRecord::Base
+class Role < ApplicationRecord
   has_and_belongs_to_many :users
 
   validates_presence_of :name

app/models/score.rb

@@ -12,7 +12,7 @@
 #  score_type :string           default("{}"), is an Array
 #
 
-class Score < ActiveRecord::Base
+class Score < ApplicationRecord
   has_many :score_user_categories
   has_many :user_categories, through: :score_user_categories
 

app/models/score_user_category.rb

@@ -10,7 +10,7 @@
 #  updated_at       :datetime         not null
 #
 
-class ScoreUserCategory < ActiveRecord::Base
+class ScoreUserCategory < ApplicationRecord
   belongs_to :score
   belongs_to :user_category
 

app/models/share.rb

@@ -10,7 +10,7 @@
 #  updated_at     :datetime         not null
 #
 
-class Share < ActiveRecord::Base
+class Share < ApplicationRecord
   # *current_user* shares *shareable*
   include Trackable
 

app/models/tag.rb

-class Tag < ActiveRecord::Base
+class Tag < ApplicationRecord
   has_many :taggings
   validates_presence_of :name
 end

app/models/tagging.rb

-class Tagging < ActiveRecord::Base
+class Tagging < ApplicationRecord
   # *current_user* tag *taggable* with *tag*
   include Trackable
 

app/models/user.rb

@@ -33,7 +33,7 @@
 #  follows_count          :integer          default("0")
 #
 
-class User < ActiveRecord::Base
+class User < ApplicationRecord
   include Followable
   include Reputationable
   include Tagger

app/models/user_category.rb

@@ -9,7 +9,7 @@
 #  updated_at :datetime         not null
 #
 
-class UserCategory < ActiveRecord::Base
+class UserCategory < ApplicationRecord
   has_many :score_user_categories
   has_many :scores, through: :score_user_categories
 

app/models/view.rb

@@ -10,7 +10,7 @@
 #  updated_at    :datetime         not null
 #
 
-class View < ActiveRecord::Base
+class View < ApplicationRecord
   # *current_user* views *viewable*
   include Trackable
 

app/views/layouts/mailer.html.erb

+<!DOCTYPE html>
+<html>
+  <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+    <style>/* Email styles need to be inline */</style>
+  </head>
+  <body><%= yield %></body>
+</html>

bin/rails

 #!/usr/bin/env ruby
-begin
-  load File.expand_path('../spring', __FILE__)
-rescue LoadError => e
-  raise unless e.message.include?('spring')
-end
-APP_PATH = File.expand_path('../../config/application', __FILE__)
+APP_PATH = File.expand_path('../config/application', __dir__)
 require_relative '../config/boot'
 require 'rails/commands'

bin/rake

 #!/usr/bin/env ruby
-begin
-  load File.expand_path('../spring', __FILE__)
-rescue LoadError => e
-  raise unless e.message.include?('spring')
-end
 require_relative '../config/boot'
 require 'rake'
 Rake.application.run

bin/setup

 #!/usr/bin/env ruby
 require 'pathname'
+require 'fileutils'
+include FileUtils
 
 # path to your application root.
-APP_ROOT = Pathname.new File.expand_path('../../',  __FILE__)
+APP_ROOT = Pathname.new File.expand_path('../../', __FILE__)
 
-Dir.chdir APP_ROOT do
+def system!(*args)
+  system(*args) || abort("\n== Command #{args} failed ==")
+end
+
+chdir APP_ROOT do
   # This script is a starting point to setup your application.
-  # Add necessary setup steps to this file:
+  # Add necessary setup steps to this file.
 
-  puts "== Installing dependencies =="
-  system "gem install bundler --conservative"
-  system "bundle check || bundle install --jobs $(nproc)"
+  puts '== Installing dependencies =='
+  system! 'gem install bundler --conservative'
+  system('bundle check') || system!('bundle install')
 
-  puts "\n== Checks database config file =="
-  unless File.exist?("config/database.yml")
-    puts "\n You need create config/database.yml. Please follow our README"
-    exit
-  end
+  # puts "\n== Copying sample files =="
+  # unless File.exist?('config/database.yml')
+  #   cp 'config/database.yml.sample', 'config/database.yml'
+  # end
 
-  puts "\n== Preparing databases, importing data and setup PortalMEC =="
-  system "bundle exec rake portalmec:setup"
+  puts "\n== Preparing database =="
+  system! 'bundle exec rake portalmec:setup'
 
   puts "\n== Removing old logs and tempfiles =="
-  system "rm -f log/*"
-  system "rm -rf tmp/cache"
+  system! 'bin/rails log:clear tmp:clear'
 
   puts "\n== Restarting application server =="
-  system "touch tmp/restart.txt"
+  system! 'bin/rails restart'
 end

bin/update

+#!/usr/bin/env ruby
+require 'pathname'
+require 'fileutils'
+include FileUtils
+
+# path to your application root.
+APP_ROOT = Pathname.new File.expand_path('../../', __FILE__)
+
+def system!(*args)
+  system(*args) || abort("\n== Command #{args} failed ==")
+end
+
+chdir APP_ROOT do
+  # This script is a way to update your development environment automatically.
+  # Add necessary update steps to this file.
+
+  puts '== Installing dependencies =='
+  system! 'gem install bundler --conservative'
+  system('bundle check') || system!('bundle install')
+
+  puts "\n== Updating database =="
+  system! 'bin/rails db:migrate'
+
+  puts "\n== Removing old logs and tempfiles =="
+  system! 'bin/rails log:clear tmp:clear'
+
+  puts "\n== Restarting application server =="
+  system! 'bin/rails restart'
+end

config/application.rb

-require File.expand_path('../boot', __FILE__)
+require_relative 'boot'
 
-# require 'rails/all'
+require 'rails'
+require 'active_model/railtie'
+# require 'active_job/railtie'
 require 'active_record/railtie'
 require 'action_controller/railtie'
 require 'action_mailer/railtie'
+require 'action_view/railtie'
+# require 'action_cable/engine'
+# require 'sprockets/railtie'
 require 'rails/test_unit/railtie'
 require 'rack/redis_throttle'
 

config/boot.rb

-ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../Gemfile', __FILE__)
+ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../Gemfile', __dir__)
 
 require 'bundler/setup' # Set up gems listed in the Gemfile.

config/cable.yml

+development:
+  adapter: async
+
+test:
+  adapter: async
+
+production:
+  adapter: redis
+  url: redis://localhost:6379/1

config/database.yml

@@ -15,7 +15,7 @@ test:
   database: portalmec_test
   username: portalmec
   password: 123mudar
-  host: postgres
+  # host: postgres
 
 production:
   <<: *defaults

config/environment.rb

 # Load the Rails application.
-require File.expand_path('../application', __FILE__)
+require_relative 'application'
 
 # Initialize the Rails application.
 Rails.application.initialize!

config/environments/development.rb

@@ -21,32 +21,55 @@ Rails.application.configure do
   # Do not eager load code on boot.
   config.eager_load = false
 
-  # Show full error reports and disable caching.
-  config.consider_all_requests_local       = true
-  config.action_controller.perform_caching = false
+  # Show full error reports.
+  config.consider_all_requests_local = true
+
+  # Enable/disable caching. By default caching is disabled.
+  if Rails.root.join('tmp/caching-dev.txt').exist?
+    config.action_controller.perform_caching = true
+
+    config.cache_store = :memory_store
+    config.public_file_server.headers = {
+      'Cache-Control' => 'public, max-age=172800'
+    }
+  else
+    config.action_controller.perform_caching = false
+
+    config.cache_store = :null_store
+  end
 
   # Don't care if the mailer can't send.
   config.action_mailer.raise_delivery_errors = false
 
+  config.action_mailer.perform_caching = false
+
   # Print deprecation notices to the Rails logger.
   config.active_support.deprecation = :log
 
   # Raise an error on page load if there are pending migrations.
   config.active_record.migration_error = :page_load
 
+
+  # Raises error for missing translations
+  # config.action_view.raise_on_missing_translations = true
+
+  # Use an evented file watcher to asynchronously detect changes in source code,
+  # routes, locales, etc. This feature depends on the listen gem.
+  # config.file_watcher = ActiveSupport::EventedFileUpdateChecker
+
   # Debug mode disables concatenation and preprocessing of assets.
   # This option may cause significant delays in view rendering with a large
   # number of complex assets.
-  config.assets.debug = true
+  # config.assets.debug = true
 
   # Asset digests allow you to set far-future HTTP expiration dates on all assets,
   # yet still be able to expire them through the digest params.
-  config.assets.digest = true
+  # config.assets.digest = true
 
   # Adds additional error checking when serving assets at runtime.
   # Checks for improperly declared sprockets dependencies.
   # Raises helpful error messages.
-  config.assets.raise_runtime_errors = true
+  # config.assets.raise_runtime_errors = true
 
   # Raises error for missing translations
   # config.action_view.raise_on_missing_translations = true

config/environments/production.rb

@@ -14,33 +14,23 @@ Rails.application.configure do
   config.consider_all_requests_local       = false
   config.action_controller.perform_caching = true
 
-  # Enable Rack::Cache to put a simple HTTP cache in front of your application
-  # Add `rack-cache` to your Gemfile before enabling this.
-  # For large-scale production use, consider using a caching reverse proxy like
-  # NGINX, varnish or squid.
-  # config.action_dispatch.rack_cache = true
-
   # Disable serving static files from the `/public` folder by default since
   # Apache or NGINX already handles this.
-  config.serve_static_files = ENV['RAILS_SERVE_STATIC_FILES'].present?
-
-  # Compress JavaScripts and CSS.
-  config.assets.js_compressor = :uglifier
-  # config.assets.css_compressor = :sass
-
-  # Do not fallback to assets pipeline if a precompiled asset is missed.
-  config.assets.compile = true
+  config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?
 
-  # Asset digests allow you to set far-future HTTP expiration dates on all assets,
-  # yet still be able to expire them through the digest params.
-  config.assets.digest = true
 
-  # `config.assets.precompile` and `config.assets.version` have moved to config/initializers/assets.rb
+  # Enable serving of images, stylesheets, and JavaScripts from an asset server.
+  # config.action_controller.asset_host = 'http://assets.example.com'
 
   # Specifies the header that your server uses for sending files.
   # config.action_dispatch.x_sendfile_header = 'X-Sendfile' # for Apache
   # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for NGINX
 
+  # Mount Action Cable outside main process or domain
+  # config.action_cable.mount_path = nil
+  # config.action_cable.url = 'wss://example.com/cable'
+  # config.action_cable.allowed_request_origins = [ 'http://example.com', /http:\/\/example.*/ ]
+
   # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
   # config.force_ssl = true
 
@@ -49,32 +39,19 @@ Rails.application.configure do
   config.log_level = :debug
 
   # Prepend all log lines with the following tags.
-  # config.log_tags = [ :subdomain, :uuid ]
-
-  # Use a different logger for distributed setups.
-  # config.logger = ActiveSupport::TaggedLogging.new(SyslogLogger.new)
+  config.log_tags = [ :request_id ]
 
   # Use a different cache store in production.
   # config.cache_store = :mem_cache_store
-  # memcached server specified in ENV["MEMCACHE_SERVERS"]
-  config.cache_store = :dalli_store, nil, { :namespace => 'portalmec', :expires_in => 1.day, :compress => true, :pool_size => 5 }
 
-  # Enable serving of images, stylesheets, and JavaScripts from an asset server.
-  # config.action_controller.asset_host = 'http://assets.example.com'
+  # Use a real queuing backend for Active Job (and separate queues per environment)
+  # config.active_job.queue_adapter     = :resque
+  # config.active_job.queue_name_prefix = "portalmec_#{Rails.env}"
+  config.action_mailer.perform_caching = false
 
   # Ignore bad email addresses and do not raise email delivery errors.
   # Set this to true and configure the email server for immediate delivery to raise delivery errors.
   # config.action_mailer.raise_delivery_errors = false
-  config.action_mailer.default_url_options = { host: ENV['ACTION_MAILER_HOST'] }
-
-  config.action_mailer.delivery_method = :smtp
-  config.action_mailer.smtp_settings = {
-      address: ENV['SMTP_ADDRESS'],
-      port: ENV['SMTP_PORT'],
-      openssl_verify_mode: 'none',
-      domain: ENV['ACTION_MAILER_HOST']
-  }
-
 
   # Enable locale fallbacks for I18n (makes lookups for any locale fall back to
   # the I18n.default_locale when a translation cannot be found).
@@ -86,6 +63,31 @@ Rails.application.configure do
   # Use default logging formatter so that PID and timestamp are not suppressed.
   config.log_formatter = ::Logger::Formatter.new
 
+  # Use a different logger for distributed setups.
+  # require 'syslog/logger'
+  # config.logger = ActiveSupport::TaggedLogging.new(Syslog::Logger.new 'app-name')
+
+  if ENV["RAILS_LOG_TO_STDOUT"].present?
+    logger           = ActiveSupport::Logger.new(STDOUT)
+    logger.formatter = config.log_formatter
+    config.logger = ActiveSupport::TaggedLogging.new(logger)
+  end
+
   # Do not dump schema after migrations.
   config.active_record.dump_schema_after_migration = false
+
+  config.cache_store = :dalli_store, nil, { :namespace => 'portalmec', :expires_in => 1.day, :compress => true, :pool_size => 5 }
+
+  # Ignore bad email addresses and do not raise email delivery errors.
+  # Set this to true and configure the email server for immediate delivery to raise delivery errors.
+  # config.action_mailer.raise_delivery_errors = false
+  config.action_mailer.default_url_options = { host: ENV['ACTION_MAILER_HOST'] }
+
+  config.action_mailer.delivery_method = :smtp
+  config.action_mailer.smtp_settings = {
+      address: ENV['SMTP_ADDRESS'],
+      port: ENV['SMTP_PORT'],
+      openssl_verify_mode: 'none',
+      domain: ENV['ACTION_MAILER_HOST']
+  }
 end

config/environments/test.rb

@@ -14,7 +14,10 @@ Rails.application.configure do
 
   # Configure static file server for tests with Cache-Control for performance.
   config.serve_static_files   = true
-  config.static_cache_control = 'public, max-age=3600'
+  config.public_file_server.headers = {
+    'Cache-Control' => 'public, max-age=3600'
+  }
+
 
   # Show full error reports and disable caching.
   config.consider_all_requests_local       = true

config/initializers/application_controller_renderer.rb

+# Be sure to restart your server when you modify this file.
+
+# ApplicationController.renderer.defaults.merge!(
+#   http_host: 'example.org',
+#   https: false
+# )

config/initializers/assets.rb

+# Be sure to restart your server when you modify this file.
+
+# Version of your assets, change this if you want to expire all your assets.
+# Rails.application.config.assets.version = '1.0'
+
+# Add additional assets to the asset load path
+# Rails.application.config.assets.paths << Emoji.images_path
+
+# Precompile additional assets.
+# application.js, application.css, and all non-JS/CSS in app/assets folder are already added.
+# Rails.application.config.assets.precompile += %w( search.js )

config/initializers/cookies_serializer.rb

+# Be sure to restart your server when you modify this file.
+
+# Specify a serializer for the signed and encrypted cookie jars.
+# Valid options are :json, :marshal, and :hybrid.
+Rails.application.config.action_dispatch.cookies_serializer = :marshal

config/initializers/new_framework_defaults.rb

+# Be sure to restart your server when you modify this file.
+#
+# This file contains migration options to ease your Rails 5.0 upgrade.
+#
+# Once upgraded flip defaults one by one to migrate to the new default.
+#
+# Read the Rails 5.0 release notes for more info on each option.
+
+# Make Ruby 2.4 preserve the timezone of the receiver when calling `to_time`.
+# Previous versions had false.
+ActiveSupport.to_time_preserves_timezone = false
+
+# Require `belongs_to` associations by default. Previous versions had false.
+Rails.application.config.active_record.belongs_to_required_by_default = false
+
+# Do not halt callback chains when a callback returns false. Previous versions had true.
+ActiveSupport.halt_callback_chains_on_return_false = true

config/initializers/wrap_parameters.rb

@@ -5,10 +5,10 @@
 
 # Enable parameter wrapping for JSON. You can disable this by setting :format to an empty array.
 ActiveSupport.on_load(:action_controller) do
-  wrap_parameters format: [:json] if respond_to?(:wrap_parameters)
+  wrap_parameters format: [:json]
 end
 
 # To enable root element in JSON for ActiveRecord objects.
 # ActiveSupport.on_load(:active_record) do
-#  self.include_root_in_json = true
+#   self.include_root_in_json = true
 # end

config/puma.rb

-# Change to match your CPU core count
-workers 2
+# Puma can serve each request in a thread from an internal thread pool.
+# The `threads` method setting takes two numbers a minimum and maximum.
+# Any libraries that use thread pools should be configured to match
+# the maximum value specified for Puma. Default is set to 5 threads for minimum
+# and maximum, this matches the default thread size of Active Record.
+#
+threads_count = ENV.fetch('RAILS_MAX_THREADS') { 5 }.to_i
+threads threads_count, threads_count
 
-# Min and Max threads per worker
-threads 1, 6
+# Specifies the `port` that Puma will listen on to receive requests, default is 3000.
+#
+port        ENV.fetch('PORT') { 3000 }
 
-app_dir = File.expand_path("../..", __FILE__)
-shared_dir = "#{app_dir}/shared"
+# Specifies the `environment` that Puma will run in.
+#
+environment ENV.fetch('RAILS_ENV') { 'development' }
+
+# Specifies the number of `workers` to boot in clustered mode.
+# Workers are forked webserver processes. If using threads and workers together
+# the concurrency of the application would be max `threads` * `workers`.
+# Workers do not work on JRuby or Windows (both of which do not support
+# processes).
+#
+workers ENV.fetch('WEB_CONCURRENCY') { 2 }
+
+# Use the `preload_app!` method when specifying a `workers` number.
+# This directive tells Puma to first boot the application and load code
+# before forking the application. This takes advantage of Copy On Write
+# process behavior so workers use less memory. If you use this option
+# you need to make sure to reconnect any threads in the `on_worker_boot`
+# block.
+#