Bhavesh ro r

10-11 Sep. 2011 Workshop on Drupal & Ruby on Rails

At DDIT, Nadiad

Bhavesh Pansheriya
Ruby on Rails Developer
Gloscon Solutions Pvt. Ltd.

What is Ruby ?
• A dynamic, open source programming language
with a focus on simplicity and productivity.

• Generic, interpreted, reflective, with garbage
collection

• Optimized for people rather than computers Yukihiro Matsumoto
The creator of Ruby
1995
• Everything is an object. There are no primitive
types.

• More powerful than Perl, more object oriented
than Python

What is Ruby ?
class Person

def initialize name
@name = name
end

def operation
@name.capitalize*3
end

end

object_1 = Person.new “tejas”
object_1.operation

OUTPUT TejasTejasTejas

Where ruby is using ?
• Simulations - NASA Langley Research Center & Motorola .

• 3D Modeling - Google SketchUp is a 3D modeling.

• Business - Toronto Rehab uses a RubyWebDialogs based
app to manage and track on-call and on-site
support.

• Robotics - At MORPHA project, Siemens service robot.

• Networking - Open Domain Server uses Ruby.

• Telephony - Within Lucent on a 3G wireless telephony
product.

• Web Applications – Basecamp, 43 Things, Blue Sequence.

What is Ruby on Rails (RoR) ?
• RoR is an open-source web framework uses
Model-View-Controller architecture developed in
Ruby.

• Web application at least ten times faster with
David Heinemeier
Rails than with a typical Java framework. Hansson
The creator of Rails
2005
• Everything in Rails (templates to control flow to
business logic) is written in Ruby
- Except for configuration files – YAML

Strength of Ruby on Rails ?
Best practices: MVC, DRY, Testing.
• Convention over Configuration.
• Integrated AJAX support. Web services with REST.
• Almost everything in Rails is Ruby code (SQL and JavaScript
are abstracted).
• Three environments- Development, Production, Testing.
• Ruby - less and more readable code, shorter development
times, simple but powerful, no compilation cycle.
• Metaprogramming.
• CoffeeScript, JQuery, Sass, Haml, JSON & HTTP Streaming.

Directory structure of Rails 2

Rails' MVC architecture in detail

HTML5
<!DOCTYPE HTML>
<html>
<body>
<menu>
<command onclick="alert('Hello World')">
Click Me!</command>
</menu>
<form action="demo_keygen.rb" method="get">
Username: <input type="text" name="usr_name" />
Encryption: <keygen name="security" />
<input type="submit" /></form>

The <abbr title="Ruby on Rails">RoR</abbr> is framework.
</body>
</html>

CoffeeScript
number = 42 var number, opposite;
opposite = true number = 42;
opposite = true;

number = -42 if opposite if (opposite) number = -42;

square = (x) -> x * x square = function(x) {
return x * x;
};

cube = (x) -> square(x) * x cube = function(x) {
return square(x) * x;
};

Sass, SCSS, CSS3
Sass is an extension of CSS3, adding nested rules,
variables, mixins, selector inheritance.
Sass has two syntaxes. The new main syntax (as of Sass
3) is known as “SCSS” (for “Sassy CSS”)
Every valid CSS3 stylesheet is valid SCSS as well.
/* .scss */
$blue: #3bbfce;
$margin: 16px; /* CSS */
.content-navigation { .content-navigation {
border-color: $blue; border-color: #3bbfce;
color:darken($blue, 9%); } color: #2b9eab; }

.border { .border {
padding: $margin / 2; padding: 8px;
margin: $margin / 2; margin: 8px;
border-color: $blue; } border-color: #3bbfce; }

Bhavesh ro r

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