This document provides an overview of Ruby on Rails, including what it is, what it means, who uses it, and how to get started. Ruby on Rails is an open source web application framework consisting of Ruby, the programming language, and Rails, the framework. It allows for agile web development using conventions over configuration. Popular websites that use Rails include Basecamp, Twitter, and Yellowpages.com.

1. A presentation by

2. contents
• w is Ruby o n Rails ?
hat
• w does it all m
hat ean?
• w uses Ruby o n Rails ?
ho
• w to get som
ant e?
A presentation by

3. w is Ruby on Rails?
hat
an o pe n s o urc e frame wo rks c o ns is ting o f 2
parts :
Ruby –the program ing language
m
Rails –the fram orks that w inspired by Struts
ew as
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4. w is Ruby on Rails?
hat
us e d fo r ‘ag ile ’ we b de ve lo pme nt by allo wing a
de ve lo pe r to us e the ‘Co C’ princ iple and
RubyGe ms
Co C –(Convention over Configuration) is a design principle that makes the
implem entation and coding of a project simpler by making the developer only
specify the unconventional aspects of a app. For instance if a developer creates
a class in the code the DB table w be nam the sam by default and all calls
ill ed e
to that class w autom
ill atically reference that table
RubyGe m –a systemfor managing Ruby Software libraries. These libraries allow
a developer to quickly add com ponents like form or m ber m
s em anagem ent
w ithout having to worry about dependences to other libraries since they are built
to run as a independent package.
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5. w does it all m
hat ean?
te ll me mo re abo ut Ruby
• an object-oriented program ing inspired by Perl that w created in
m as
the m id-1990s and w initially developed and designed by Yukihiro
as
"M atz" M atsumoto.
• created w the goal of m
ith aking the program er do less w
m ork.
• very flexible program ing language
m
• features dynam typing.
ic
• built in garbage collector, this is used to keep from leaking m ory.
em
• can load libraries dynam ically based on need
• highly portable: developed m ostly on GNU/Linux, but w orks on many
types of UNIX, M OS X, W
ac indow 95/98/M
s e/NT/2000/XP, DOS,
BeOS, OS/2, etc.
• currently on build 1.8.7
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6. w does it all m
hat ean?
te ll me mo re abo ut Rails
• it w extracted by David Hansson from his w on Basecam
as ork p
• a program er can use som
m ething called ‘ scaffolding’ hich
w
autom atically generates basic pieces of code necessary for the
‘logistics’ (deleting, adding, reading) of a site.
• built to use JS libraries out of the box so it is very behavior rich on the
front end.
• does a great job of separating the M VC, w hich allow a developer to
s
m ake ‘ eb 2.0’
W based apps that easily connects to the Server and DB,
then packages the DB Rowinfo into an object on the View
• w orks w ith
• Server - Apache, lighttpd, or nginx proxying to M ongrel
• Database - M ySQL, PostgreSQL, SQLite, Oracle, SQL
Server, DB2 etc.
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7. w does it all m
hat ean?
what are the drawbac ks o f us ing it?
• still newso things like security holes are being found all
the tim e
• setting up the Server to run Ro R can be very
challenging
• since so m any things are done autom atically out of the
box - creation of DB tables, adding, m odifying, deleting
info in the tables - program ers can get lazy and the
m
app can becom hard to scale (see Tw )
e itter
• can be hard to find good program ers
m
• m program ers need to learn 2 newtechnologies,
ost m
Ruby and Rails
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8. w does it all m
hat ean?
whe n s ho uld I us e it?
• w hen creating a w app from scratch and need
eb
m any of the com ponents found in m odern W 2.0
eb
offerings. Ro R gives you these out of the box.
• w hen a w site is being driven by inform
eb ation from a
Database.
• have a visual rich site, since Ro R does a good job
separating the M changes can be m
VC ade data-
handling w ithout effecting the UI.
• you have an aggressive tim efram for launching a
e
product
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9. w uses Ruby on Rails?
ho
http://w w
w .basecam phq.com /
http://w w
w .cam pfirenow .com/
http://w w
w .43things.com /
http://w w
w .coastr.com /
http://twitter.com/
http://w w
w .yellow pages.com /
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10. w to get som
ant e?
hello@momentumdesignlab.com
1.866.542.7124
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