vkvikaskmr / rails7_demo_by_dhh

DHH showing how to build a responsive web app. In this app we see how we can create a post page where any edit to the post, updates everybody's screen who are on that post page. Similarly, comments made on the post get added to the page asynchronously without any page refresh

README

Rails 7 code along with DHH.(using bootstrap)

• Some notes from the sessions:

  • How to download JS package and pin it in importmaps

    # download package
    ./bin/importmap pin local-time --download # this downloads it in the vendor file
    

  • How to pin JS package in importmap using the jspm CDN

    ./bin/importmap pin local-time
    

• WIP

  • Active storage not working with turbo streams. Need to check I was able to figure this out. Need to add default_url_options in the config. See this commit

• Intalling bootstrap with rails 7 and importmaps. Found the simplest version which works with the default rails setup - sprockets and importmaps.

  • install bootstrap and sassc-rails gems in your broject
  • rename app/assets/stylesheets.css to app/assets/stylesheets.scss
  • add line @import "bootstrap"; to the application.scss file
  • then open config/initializers/assets.rb and add these line

  Rails.application.config.assets.precompile += %w( bootstrap.min.js popper.js )
  

  • goto config/importmap.rb and add the following lines

  pin "popper", to: 'popper.js', preload: true
  pin "bootstrap", to: 'bootstrap.min.js', preload: true
  

  • goto app/javascript/application.js and add following lines

  import "popper"
  import "bootstrap"
  

• Install Redis (for turbo-stream to work)

  sudo apt update
  sudo apt install redis-server
  sudo service redis-server start
  # test installation using
  redis-cli ping
  

• Install postgres from here: https://www.digitalocean.com/community/tutorials/how-to-install-and-use-postgresql-on-ubuntu-20-04

• Using active storage requires some extra setup

  # this is used by image-processing gem
  sudo apt install libvips42
  

• Install rbenv

  • sudo apt update
  • sudo apt install git curl libssl-dev libreadline-dev zlib1g-dev autoconf bison build-essential libyaml-dev libreadline-dev libncurses5-dev libffi-dev libgdbm-dev
  • curl -fsSL https://github.com/rbenv/rbenv-installer/raw/HEAD/bin/rbenv-installer | bash
  • echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc
  • echo 'eval "$(rbenv init -)"' >> ~/.bashrc
  • source ~/.bashrc