Web Application Intro for RailsGirls Berlin May 2013

Slide 1

Slide 1 text

Introduction to Web Applications Tobias Pfeiffer @PragTob pragtob.wordpress.com

Slide 2

Slide 2 text

Today

Slide 3

Slide 3 text

No content

Slide 4

Slide 4 text

What is a web application?

Slide 5

Slide 5 text

Not rocket science

Slide 6

Slide 6 text

I am Rails (and So Can You!)

Slide 7

Slide 7 text

Programming is fun!

Slide 8

Slide 8 text

What you are going to build today

Slide 9

Slide 9 text

So what is a web application?

Slide 10

Slide 10 text

Presented in a web browser

Slide 11

Slide 11 text

Runs on a server...

Slide 12

Slide 12 text

...or the cloud

Slide 13

Slide 13 text

is dynamic

Slide 14

Slide 14 text

A high level overview

Slide 15

Slide 15 text

High level overview

Slide 16

Slide 16 text

High level overview

Slide 17

Slide 17 text

High level overview Request

Slide 18

Slide 18 text

High level overview

Slide 19

Slide 19 text

High level overview Answer

Slide 20

Slide 20 text

High level overview Answer

Slide 21

Slide 21 text

High level overview

Slide 22

Slide 22 text

What parts does a web application consist of?

Slide 23

Slide 23 text

Web Application

Slide 24

Slide 24 text

Front End Back End

Slide 25

Slide 25 text

Front End Back End

Slide 26

Slide 26 text

CSS HTML JavaScript

Slide 27

Slide 27 text

CSS HTML JavaScript

Slide 28

Slide 28 text

Structure and content

Slide 29

Slide 29 text

CSS HTML JavaScript

Slide 30

Slide 30 text

Styling to transform...

Slide 31

Slide 31 text

...this...

Slide 32

Slide 32 text

...into this.

Slide 33

Slide 33 text

No content

Slide 34

Slide 34 text

CSS HTML JavaScript

Slide 35

Slide 35 text

Back End CSS HTML JavaScript

Slide 36

Slide 36 text

Back End CSS HTML JavaScript

Slide 37

Slide 37 text

Logic Infrastructure

Slide 38

Slide 38 text

Logic Infrastructure

Slide 39

Slide 39 text

Logic ● Behaviour ● Implements the business logic ● Ties all the parts together ● Generates content

Slide 40

Slide 40 text

Ruby on Rails

Slide 41

Slide 41 text

But what is Ruby on Rails?

Slide 42

Slide 42 text

A web application framework written in Ruby

Slide 43

Slide 43 text

● A general purpose programming language ● Principle of least surprise ● Invented by Yukihiro Matsumoto

Slide 44

Slide 44 text

"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." Yukihiro Matsumoto

Slide 45

Slide 45 text

Ruby on Rails ● Framework written in Ruby ● set of functionality to help write web applications – Connecting to the database (ActiveRecord) – Generating HTML (ERB) – Pays attention to security – … and so much more! ● Model View Controller ● You write in Ruby

Slide 46

Slide 46 text

Logic Infrastructure

Slide 47

Slide 47 text

Web Server

Slide 48

Slide 48 text

Logic Infrastructure

Slide 49

Slide 49 text

Storing all your data...

Slide 50

Slide 50 text

...in giant tables

Slide 51

Slide 51 text

Recap

Slide 52

Slide 52 text

Logic Storage Infrastructure CSS HTML JavaScript Web Application Landscape

Slide 53

Slide 53 text

Logic Storage Infrastructure CSS HTML JavaScript Web Application Landscape Bootstrap DOM Ruby on Rails Sqlite WEBrick Ruby

Slide 54

Slide 54 text

Bento Box Exercise ● Sort technologies and associated words into the landscape ● 5 minutes time

Slide 55

Slide 55 text

Logic Storage Infrastructure CSS HTML JavaScript Web Application Landscape Bootstrap DOM Ruby on Rails Sqlite WEBrick Ruby

Slide 56

Slide 56 text

Bento Box Exercise ● jQuery ● Django ● Unicorn ● PHP ● Python ● XML ● Java ● MongoDB

Slide 57

Slide 57 text

Logic Storage Infrastructure CSS HTML JavaScript Web Application Landscape Bootstrap XML DOM jQuery Ruby on Rails Sqlite Unicorn WEBrick MongoDB Ruby PHP Python Django Java

Slide 58

Slide 58 text

Question time ?

Slide 59

Slide 59 text

Where to go from here? ● I gather resources here, such as: – http://pragtob.github.io/rails-beginner-cheatsheet/ – http://ruby.railstutorial.org/ – http://rubymonk.com/ – http://www.codeschool.com/courses/rails-for-zombies – http://rubykoans.com/ – http://railscasts.com/ ● Rails Girls Berlin project groups

Slide 60

Slide 60 text

Thank you and enjoy coding! Tobias Pfeiffer @PragTob pragtob.wordpress.com listen to me talking about learning Ruby (German)

Slide 61

Slide 61 text

Photo credit ● http://www.flickr.com/photos/captainkimo/5918836159/ ● http://www.flickr.com/photos/weppos/7486411688/ ● http://www.flickr.com/photos/railsgirlsberlin/7882839698/in/photostream ● http://www.flickr.com/photos/nirak/644336486/