Intro to Rails

Introduction to Ruby on Rails Prototyping Web Applications the Easy
Way (c) by Nam Chu Hoai, @nambrot

What are And why should you care? Web Applications ?

Web Applications

Web Page

Web Page Internets

Web Page Internets http://cs.bu.edu/fac/snyder/index.html Gimme the resource that I think
should be there Request

Web Page Request Resource -> Find File -> Receive Response
Internets http://cs.bu.edu/fac/snyder/index.html Gimme the resource that I think should be there <html><head><title>I’m Prof Snyder, ... Here you go, this is what I have Request Response

Internets http://cs.bu.edu/fac/snyder/index.html Gimme the resource that I think should be
there <html><head><title>I’m Prof Snyder, ... Here you go, this is what I have Request Response Web Page Request Resource -> Find File -> Receive Response

Internets Web Application

Internets https://www.facebook.com/groups/2613588/members/ Show me the members of the group 2613588
Web Application Request

Request Resource -> *magic* -> receive response Internets https://www.facebook.com/groups/2613588/members/ Show
me the members of the group 2613588 <html><head><title>Bu Startups Group Members A list of all the members Web Application Request Response

Web pages are generally static content Web Page

Web Application dynamically create content, use Web Pages as their
UI Web Application

gonna tell you a secret

90% of web apps are glorified excel spreadsheets

Web Applications 90% of Web Applications are glorified Excel Spreadsheets

try to think of your biz idea/prototype in this frame
-> pwn it in rails Ruby on Rails for RESTful CRUD Web Applications

Rails Response/Request Cycle Model-View-Controller Convention for standard CRUD Operations Internets

http://localhost/posts/1/comments Gimme the comments of the ﬁrst post Request

http://localhost/posts/1/comments Gimme the comments of the ﬁrst post Request Controller

http://localhost/posts/1/comments Gimme the comments of the ﬁrst post Request Model Controller

http://localhost/posts/1/comments Gimme the comments of the ﬁrst post <html><head><title>Great post, bla bla bla Here are all the comments Request Response Model Controller View

What makes Rails so awesome? Does it print money? Or
even bitcoins? “Ruby on Rails does for web application developers what a toilet-installing robot would do for plumbers.”

“I hope to see Ruby help every programmer in the
world to be productive, and to enjoy programming, and to be happy. That is the primary purpose of Ruby language.” Ruby Matz

Rails is a framework Abstracts away common parts of a
Web Application

• Solid Conventions (over Configuration) • Routing • Database Connection/Serialization/Querying
(Fuck SQL) • Security • Gem Ecosystem • Great OTB Experience/Heroku Rails is a framework Abstracts away common parts of a Web Application

Rails vs Others Most are inspired by Rails

Rails vs Others Most are inspired by Rails • slightly
less code, declarative style • larger ecosystem for prototyping components • kinda slow • not so good at realtime-y stuff

Web Apps vs Native/Mobile Apps Good for social stuff, less
cool for individual, interactive stuff UX: - offline - sensors Open Platform: - develop for one platform, reach everyone - not at the mercy of appstores, no proprietary software, use any tools you want

cool for individual, interactive stuff Performance UX: - offline - sensors Open Platform: - develop for one platform, reach everyone - not at the mercy of appstores, no proprietary software, use any tools you want

cool for individual, interactive stuff Performance User Experience UX: - offline - sensors Open Platform: - develop for one platform, reach everyone - not at the mercy of appstores, no proprietary software, use any tools you want

cool for individual, interactive stuff Performance Not As Cool User Experience UX: - offline - sensors Open Platform: - develop for one platform, reach everyone - not at the mercy of appstores, no proprietary software, use any tools you want

cool for individual, interactive stuff Performance Not As Cool Easier/Faster User Experience UX: - offline - sensors Open Platform: - develop for one platform, reach everyone - not at the mercy of appstores, no proprietary software, use any tools you want

cool for individual, interactive stuff Immediate Updates Performance Not As Cool Easier/Faster User Experience UX: - offline - sensors Open Platform: - develop for one platform, reach everyone - not at the mercy of appstores, no proprietary software, use any tools you want

cool for individual, interactive stuff Immediate Updates Performance Open Platform Not As Cool Easier/Faster User Experience UX: - offline - sensors Open Platform: - develop for one platform, reach everyone - not at the mercy of appstores, no proprietary software, use any tools you want

cool for individual, interactive stuff Immediate Updates Performance Open Platform API Stability SEO Not As Cool Easier/Faster User Experience UX: - offline - sensors Open Platform: - develop for one platform, reach everyone - not at the mercy of appstores, no proprietary software, use any tools you want

Demo Time!

Intro to Rails

Intro to Rails

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