Happy (?) Rails Trial: February 2015

Monday, February 16, 2015

Install Rails 4.1 on Ubuntu 14.04

# Install Rails
# Install ruby 2.1
sudo add-apt-repository ppa:brightbox/ruby-ng
sudo apt-get update
sudo apt-get install ruby2.1

# Install ruby Dev-Kit
sudo apt-get install ruby2.1-dev

# Install sqlite3
sudo apt-get install sqlite3

# Install sqlite3 Dev-Kit
sudo apt-get install libsqlite3-dev

# Install nodejs (javascript-runtime)
sudo apt-get install nodejs

# Install Rails
sudo gem install rails -v "=4.1"

# create a new rails project and run it
sudo rails new blog
cd blog
sudo rails server

# Open browser, link to http://localhost:3000/
# Done
# Then follow official Rails Guide
# http://guides.rubyonrails.org/getting_started.html

Reference:

What versions of ruby are supported in 14.04?

Failed to build gem native extension — Rails install

sqlite3-ruby install error on Ubuntu

ExecJS and could not find a JavaScript runtime

Extend Virtualbox Ubuntu Window Size

# Extend Virtualbox Ubuntu Window Size
# Press Ctrl + Alt + T to open terminal
# execute
sudo apt-get install virtualbox-guest-dkms
# Input your password when asking
# Type Y then Enter when asking
# Restart VM
# Done

Update :

The method above doesn't work for me in newer version of virtualbox, another way:

Run Command

# Update repo
sudo apt-get update
# install linux headers
sudo apt-get install linux-headers-$(uname -r)
# install build-essential and dkms
sudo apt-get install build-essential
sudo apt-get install dkms

Then click 'Device-> Insert Guest Addition CD Image' at menu bar and follow instruction.

Reference:

How do I install Guest Additions in a VirtualBox VM?

cannot change screen size from 640x480 after 14.04 installation on VirtualBox OSX [duplicate]

Saturday, February 7, 2015

Install Ubuntu 14.04 on VirtualBox

Execute VirtualBox

New
(Click image to view)

=>

Name: RailsPlayground
Type: Linux
Version: Ubuntu (32 bit)
Next

=>

Memory Size: 2048 MB
Next

=>

Create a virtual hard drive now
Create

=>

Hard drive file type: VDI
Next

=>

Storage on physical hard drive: Fixed size
Next

=>

File location and size
Change size to 16GB
Create

=>

VM created

=>

Settings

=>
Network - Adapter 1 - Bridged Adapter
Select Adapter as needed

=>

Storage - Controller IDE
Choose .iso file as needed
OK

=>

Start

=>

Ubuntu screen appeared
Select language, click Install Ubuntu

=>

Check Download updates while installing
Continue

=>

Install Now
(...)
Install Finished
Click Restart Now

=>

Close VM
=>
Start it again
Done

Test Test Test

Start to trying something in/on/with Rails...
Hope it will be fun.

###

JS

            var i = 1,
                j = 2;
            alert(i+j); // shoould be 3

CSS

            /* comments */
            .title {
                font-size: 24px;
                color: #4D4D4D;
            }
            .desc {
                font-size: 16px;
                color: #DD406F;
            }

HTML

            <html>
                <head>
                    <!-- some comments -->
                </head>
                <body>
                    some content
                </body>
            </html>