Install RoR env

install.md

HomeBrew is a package manager for OSX. Brew install missing stuff so easy…

• Install Homebrew:
  /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

RVM: is a command-line tool which allows you to easily install, manage, and work with multiple ruby environments from interpreters to sets of gems.

• Install GPG keys:
  brew install gnupg
gpg --keyserver hkp://51.38.91.189 --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
• Install RVM:
  \curl -sSL https://get.rvm.io | bash -s stable
• Install Ruby:
  rvm install 2.6.3 (2.6.3 is version of Ruby, you can change it to whater version you want)

Because each project will have a different gem list, so you should use a gemset for each project. In local you should create a file .rvmrc in project folder.
Example: if project is using ruby 2.6.3, we will have
rvm use 2.6.3@gemset_name --create

Each time we cd into the project folder, the rvm will use right gemset for this project.

MySQL

Version 5.7

• Find older mysql versions
  brew search mysql

• Install older mysql version . brew install mysql@5.7

• Start agent for older version of mysql (including on login) . ln -sfv /usr/local/opt/mysql@5.7/*.plist ~/Library/LaunchAgents launchctl load ~/Library/LaunchAgents/homebrew.mxcl.mysql@5.7.plist

• Unlink current mysql version . brew unlink mysql

• Check older mysql version . ls /usr/local/Cellar/mysql@5.7
  Example output: 5.7.25

• Link the older version (above output) . brew switch mysql@5.7 5.7.25

• If you have trouble with installing the mysql gem when bundle install, you can run:
  gem install mysql2 -v '0.5.2' --source 'https://rubygems.org/' -- --with-mysql-config=/usr/local/opt/mysql@5.7/bin/mysql_config

• Start & Stop mysql service:
  /usr/local/opt/mysql@5.7/bin/mysql.server start /usr/local/opt/mysql@5.7/bin/mysql.server stop

---

rvm install 2.7.1

rvm use 2.7.1@project_name --create

gem install rails

rails new . --skip-test --skip-bundle --database=mysql

cp config/database.yml config/database.yml.example

group :development, :test do
  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
  gem 'rspec-rails', '~> 3.7'
end

bundle

rails g rspec:install