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最速!MacでRuby on Rails環境構築

homebrewをインストール

http://brew.sh/index_ja.html

Ruby編

rbenvをインストール

$ brew install rbenv
$ brew install ruby-build
$ rbenv version
2.2.3 (set by ******)

bash_profileに追記

$ echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile
$ echo 'if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi' >> ~/.bash_profile
$ source ~/.bash_profile

Rubyをインストール

$ rbenv install 2.6.1

rbenvのバージョンを切り替える

$ rbenv global 2.6.1
$ rbenv rehash
$ ruby -v
ruby 2.6.1p33 (2019-01-30 revision 66950) [x86_64-darwin17]
$ gem -v
3.0.1

bundlerインストール

$ gem install bundler
$ bundle -v
Bundler version 2.0.1

MySQL編(SQLiteを使用する場合は不要)

MySQLをインストール

$ brew install mysql

MySQL起動

$ mysql.server start
Starting MySQL
SUCCESS! 

Rails編

てきとうなワークスペース

$ mkdir ~/workspace
$ cd ~/workspace

bundle init

$ bundle init
Writing new Gemfile to /Users/*****/workspace/Gemfile

できあがったGemfileのRailsのコメントアウトを外す

Gemfile
# A sample Gemfile
source "https://rubygems.org"

gem "rails"

Railsインストール

$ bundle install --path=vendor/bundle
Fetching gem metadata from https://rubygems.org/...........

Railsアプリケーション作成

$ bundle exec rails new .

聞かれたやつは全部 y

ライブラリインストール

$ bundle install --path=vendor/bundle
Fetching gem metadata from https://rubygems.org/...........

Railsアプリケーション起動

$ bundle exec rails s
PC-10214:workspace a13161$ bundle exec rails s
=> Booting WEBrick
=> Rails 4.2.5 application starting in development on http://localhost:3000
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
[2015-12-13 02:24:12] INFO  WEBrick 1.3.1
[2015-12-13 02:24:12] INFO  ruby 2.2.3 (2015-08-18) [x86_64-darwin14]
[2015-12-13 02:24:12] INFO  WEBrick::HTTPServer#start: pid=55996 port=3000

おわり

http://localhost:3000/ へアクセスしてみましょう!

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