before test cases 2

Batch2/Rails/8th.rb

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+heroku deployment 
+Integrating javascript libraries like vue
+  gem 'webpacker'
+  gem 'foreman'
+  rails webpacker:install
+  rails webpacker:install:vue
+  yarn install
+  // app/javascript/packs/application.js
+
+  import Vue from 'vue/dist/vue.esm'
+  import App from '../components/app.vue'
+
+  document.addEventListener('DOMContentLoaded', () => {
+    document.body.appendChild(document.createElement('app'))
+    const app = new Vue({
+      el: 'app',
+      template: '<App/>',
+      components: { App }
+    })
+
+    console.log(app)
+  })
+//later stage 
+
+  import Vue from 'vue/dist/vue.esm'
+  import App from '../app.vue'
+  import Router from 'vue-router'
+  import Signin from '../components/Signin.vue'
+  Vue.use(Router)
+
+  const NotFound = { template: '<p>Page not found</p>' }
+
+  const routes = {
+    '/': App
+  }
+
+  document.addEventListener('DOMContentLoaded', () => {
+    document.body.appendChild(document.createElement('app'))
+    const app = new Vue({
+      el: 'app',
+      data: {
+        currentRoute: window.location.pathname
+      },
+      computed: {
+        ViewComponent () {
+          return routes[this.currentRoute] || NotFound
+        }
+      },
+      render (h) { return h(this.ViewComponent) }	
+    })
+
+    console.log(app)
+  })
+
+  # Procfile
+  backend: bin/rails s -p 3000
+  frontend: bin/webpack-dev-server
+
+  foreman start 
+  <%= javascript_pack_tag 'application' %>
+
+
+Active jobs 
+  GuestsCleanupJob.set(wait_until: Date.tomorrow.noon).perform_later(guest)
+  GuestsCleanupJob.set(wait: 1.week).perform_later(guest)
+  config.active_job.queue_adapter = :sidekiq
+  self.queue_adapter = :resque
+  queue_as :urgent
+  queue_as :low_priority
+  queue_as :default
+  Rails by default comes with an asynchronous queuing implementation that runs jobs with an in-process thread pool. 
+  Jobs will run asynchronously, but any jobs in the queue will be dropped upon restart.
+  Available callbacks
+    before_enqueue
+    around_enqueue
+    after_enqueue
+    before_perform
+    around_perform
+    after_perform
+
+    Exception handelling 
+    rescue_from(ActiveRecord::RecordNotFound) do |exception|
+      # Do something with the exception
+    end
+
+    retry_on CustomAppException # defaults to 3s wait, 5 attempts
+    discard_on ActiveJob::DeserializationError
+
+
+Caching
+  page caching
+  action caching
+  fragment caching
+    gem:
+      actionpack-page_caching
+      actionpack-action_caching
+      caches_page :index
+  config.action_controller.perform_caching = true    
+
+
+Puma web server
+  workers
+  thread 
+
+
+Thread in rails 
+
+I18n
+
+Day - 9
+  Ruby's Test Framework 
+  From Minitest to Rails Testing 
+  Functional Tests
+  Rspec (matchers, assertions, mocks, factory-girl)
+  Creating your Own gem
+  How to debug/patch a gem
+
+
+
+
+
+
+Day - 10
+
+    Module - prepped extended, included , inherited
+    Metaprogramming
+
+

Batch2/Rails/devise_app/.gitignore

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+# See https://help.github.com/articles/ignoring-files for more about ignoring files.
+#
+# If you find yourself ignoring temporary files generated by your text editor
+# or operating system, you probably want to add a global ignore instead:
+#   git config --global core.excludesfile '~/.gitignore_global'
+
+# Ignore bundler config.
+/.bundle
+
+# Ignore the default SQLite database.
+/db/*.sqlite3
+/db/*.sqlite3-journal
+
+# Ignore all logfiles and tempfiles.
+/log/*
+/tmp/*
+!/log/.keep
+!/tmp/.keep
+
+# Ignore uploaded files in development
+/storage/*
+!/storage/.keep
+
+/node_modules
+/yarn-error.log
+
+/public/assets
+.byebug_history
+
+# Ignore master key for decrypting credentials and more.
+/config/master.key

Batch2/Rails/devise_app/.ruby-version

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+2.4.0

Batch2/Rails/devise_app/Gemfile

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+source 'https://rubygems.org'
+git_source(:github) { |repo| "https://github.com/#{repo}.git" }
+
+ruby '2.4.0'
+
+# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
+gem 'rails', '~> 5.2.3'
+# Use sqlite3 as the database for Active Record
+gem 'sqlite3'
+# Use Puma as the app server
+gem 'puma', '~> 3.11'
+# Use SCSS for stylesheets
+gem 'sass-rails', '~> 5.0'
+gem 'devise'
+gem 'bootstrap-sass'
+gem 'autoprefixer-rails'
+# Use Uglifier as compressor for JavaScript assets
+gem 'uglifier', '>= 1.3.0'
+# See https://github.com/rails/execjs#readme for more supported runtimes
+# gem 'mini_racer', platforms: :ruby
+
+# Use CoffeeScript for .coffee assets and views
+gem 'coffee-rails', '~> 4.2'
+# Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
+gem 'turbolinks', '~> 5'
+# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
+gem 'jbuilder', '~> 2.5'
+# Use Redis adapter to run Action Cable in production
+# gem 'redis', '~> 4.0'
+# Use ActiveModel has_secure_password
+# gem 'bcrypt', '~> 3.1.7'
+
+# Use ActiveStorage variant
+# gem 'mini_magick', '~> 4.8'
+
+# Use Capistrano for deployment
+# gem 'capistrano-rails', group: :development
+
+# Reduces boot times through caching; required in config/boot.rb
+gem 'bootsnap', '>= 1.1.0', require: false
+
+group :development, :test do
+  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
+  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
+end
+
+group :development do
+  # Access an interactive console on exception pages or by calling 'console' anywhere in the code.
+  gem 'web-console', '>= 3.3.0'
+  gem 'listen', '>= 3.0.5', '< 3.2'
+  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
+  gem 'spring'
+  gem 'spring-watcher-listen', '~> 2.0.0'
+end
+
+group :test do
+  # Adds support for Capybara system testing and selenium driver
+  gem 'capybara', '>= 2.15'
+  gem 'selenium-webdriver'
+  # Easy installation and use of chromedriver to run system tests with Chrome
+  gem 'chromedriver-helper'
+end
+
+# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
+gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]