Wednesday, May 30, 2012

Rails - to create a blog site Part 2

Creating a resource.

The format used is as follow :

$ rails generate scaffold <resource name> <list of fields>

Example :
$ rails generate scaffold test_j author:string title:string tag:string content:text create_datetime:timestamp

Create associated table in the database.

$ rake db:migrate

Then you are done! This new resource can be accessed by<resource name>/

For the example that I used, it would be http://

Click on the New Test_j link will give you the form that we created with the one line command earlier.

Note that, the date time is showing current GMT time. I haven't figured out why/how matters. :)

Rails - to create a blog site Part 1

Tutorial that I am following is from this site :

I choose to sudo as root to avoid the permission issue.
$ sudo su 

Install Ruby
$ apt-get install rubygems

Install Rails
$ gem install rails

Create a blog application
$ rails new blog

Note : You might encounter this error.
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension

To solve this, install sqlite before create the blog application.
$ apt-get install libsqlite3-dev
$ gem install sqlite3 -v '1.3.6'

Create a database
$ rake db:create

You might encounter this error.
rake aborted!
Could not find a JavaScript runtime. See for a list of available runtimes.

Go to the created blog directory. Edit this file : Gemfile.
Uncomment this line :
gem 'therubyracer', :platform => :ruby
Run this (installing nodejs and also reinstall rails) :
$ apt-get install nodejs
$ bundle install

To start the web server
$ rails server

You can access the new project site at

P/S : I am running on Ubuntu 12.04.