Ruby on Rails installation and Hello World

First, environmental installation

CentOS Operating System

1, installation RVM

Curl-ssl Https://get.rvm.io | Bash-s Stable

Rvm-v to see if the installation was successful

2. Install Ruby

RVM Install 1.9.3

Ruby-v viewing the ruby version number

RVM command Simple to use introduction:

RVM Install the latest version of Ruby by default

RVM Reinstall Ruby Re-installation

RVM Remove Ruby removes the installation of Ruby

If you want to install, reload, or delete ruby, you can specify a version, that is, write the corresponding parameters behind Ruby.

3. Install Rails

Gem Install Rails-v

Rails-v to see if the installation was successful

You can install a specific version of rails, such as the gem install Rails-v 3.2.13.

Second, Vrud Hello World

1. Create a project

mkdir projects

CD projects

Rails New Demo--skip-test-unit

CD Demo

Bundle Install

2. Start the program

Rails Server-b 2.2.2.2

or Rails s-b 2.2.2.2

3. Create a crud program using scaffold

Bin/rails g scaffold person name:string bio:text birthday:date

4. Create a database table

Bin/rake db:migrate

Access to verify that the program was created successfully.

Ruby on Rails installation and Hello World