Install JRuby under Linux

Install Ruby

Cd

git clone https://github.com/rbenv/rbenv.git ~/.rbenv

echo ' Export path= ' $HOME/.rbenv/bin: $PATH "' >> ~/.BASHRC

Echo ' eval ' $ (rbenv init-) "' >> ~/.BASHRC

EXEC $SHELL

git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build

echo ' Export path= ' $HOME/.rbenv/plugins/ruby-build/bin: $PATH "' >> ~/.BASHRC

EXEC $SHELL

Rbenv Install 2.3.1

Rbenv Global 2.3.1

Ruby-v

Installing Bundler

gem install bundler

Installing Nodejs

node -vcurl -sL https://deb.nodesource.com/setup_4.x | sudo -E bash -

sudo apt-get install -y nodejs

Installing Rails

4.2.6

rbenv rehash

The version number can be prompted by the tab prompt for the latest version number

First Web site

Using the SQLite3 test:

#### If you want to use SQLite (not recommended)

rails new myapp

#### If you want to use MySQL

rails new myapp -d mysql

#### If you want to use Postgres

# Note that this will expect a postgres user with the same username

# as your app, you may need to edit config/database.yml to match the

# user you created earlier

rails new myapp -d postgresql

# Move into the application directory

cd myapp

# If you setup MySQL or Postgres with a username/password, modify the

# config/database.yml file to contain the username/password that you specified

# Create the database

rake db:create

rails server

Open http://localhost:3000 to see the cover page.

The first crud feature

Rails Generate scaffold person first_name:string last_name:string phone_number:string Address:text

Rake Db:migrate

Rake Db:migrate rails_env=production

Now open Http://localhost:3000/people There is a staff management crud page.

JRuby running the Rails installation Java

Uninstall OPENJDK First:

Yum-y Remove java*

Installing Oracle JDK

sudo rpm-i jdk-8u112-linux-x64.rpm

Installing JRuby

Rbenv Install--list

Rbenv Global jruby-9.1.5.0

Jruby–v

Modify Gemfile

Remove Auto-generated:

Gem ' Activerecord-jdbcsqlite3-adapter '

Add at the end:

Platform:jruby do

Gem ' Activerecord-jdbc-adapter ', git: ' Https://github.com/jruby/activerecord-jdbc-adapter.git ', branch: ' Rails-5 '

Gem ' Activerecord-jdbcsqlite3-adapter ', git: "Https://github.com/jruby/activerecord-jdbc-adapter.git", Branch: ' Rails-5 '

Gem ' Listen '

End

Run

Bundle Install

Jruby–s Rails Server

Install JRuby under Linux