Rails 2.0

1

Barry Burd

Barry@BurdBrain.com

This slide presentation 2008 Barry Burd

Copyrights for Ruby, Rails and other material are held by their

respective owners.

Install Ruby and Rails

Ruby - http://www.ruby-lang.org/en/downloads/

Rails -

2008 Barry Burd 2

Install SQLite

http://www.sqlite.org/download.html

2008 Barry Burd 3

Copy the uncompressed files to your ruby\bin directory

Install SQLite (continued)

2008 Barry Burd 4

Install the Aptana IDE

You need the Java Runtime -

http://java.sun.com/javase/downloads/index.jsp

Aptana - http://www.aptana.com/download/index.php

2008 Barry Burd 5

Install the

RadRails plugin

within Aptana

2008 Barry Burd 6

Configure RadRails

2008 Barry Burd 7

Configure RadRails

2008 Barry Burd 8

Configure RadRails

2008 Barry Burd 9

The Aptana IDE

Based on Eclipse

View

Editor

Part

Area

Perspective

2008 Barry Burd 10

Ruby

Pers

2008 Barry Burd11

spective

Rails

Per

2008 Barry Burd 12

rspective

Data

Per

2008 Barry Burd 13

rspective

Debug

Per

2008 Barry Burd 14

rspective

Watch a movie...

http://www.burdbrain.com/RubyOnRails/Rails2.wmv

2008 Barry Burd 15

RadRails Perspective

2008 Barry Burd 16

Create a new Rails Project

2008 Barry Burd 17

Name the project

2008 Barry Burd18

Rails creates

folders and files

2008 Barry Burd 19

Create a database

2008 Barry Burd 20

Generate a scaffold

2008 Barry Burd 21

Migrate the databaseCreate table(s) and column(s)

2008 Barry Burd 22

Start the projects Web server

2008 Barry Burd 23

Visit the Web servers Welcome page

2008 Barry Burd 24

Visit the list page

2008 Barry Burd 25

Add a new record

2008 Barry Burd 26

2008 Barry Burd 27

Show an existing record

2008 Barry Burd 28

Edit an existing record

2008 Barry Burd 29

Several types

of fields

2008 Barry Burd30

The Migration FileBookstore\db\migrate\001_create_books.rb

2008 Barry Burd 31

Bookstore\config\database.yml

2008 Barry Burd 32

The Model CodeBookstore\app\models\book.rb

2008 Barry Burd 33

The Controller CodeBookstore\app\controllers\books_controller.rb

"if the client wants HTML in

response to this action, just

respond as we would have

before, but if the client wants

XML, return them the list of

people in XML format." (Rails

determines the desired

response format from the

HTTP Accept header submitted

2008 Barry Burd 34

HTTP Accept header submitted

by the client.)

Let the instance variable (the attribute) @book be

the record you get when

you look for a record

whose id matches the

incoming id parameter.

The Controller CodeBookstore\app\controllers\books_controller.rb

2008 Barry Burd 35

The Controller CodeBookstore\app\controllers\books_controller.rb

2008 Barry Burd 36

The Controller CodeBookstore\app\controllers\books_controller.rb

2008 Barry Burd

The Index PageBookstore\app\views\books\index.html.erb

2008 Barry Burd

View Source

View Source

xml:lang="en" lang="en">

Books: index

2008 Barry Burd 39

View Source

Listing books

Title

IsbnIsbn

Ruby on Rails For Dummies

12233355566622444

Show

Edit

View Source

Listing books

Title

IsbnIsbn

Ruby on Rails For Dummies

12233355566622444

Show

Edit

The Edit PageBookstore\app\views\books\edit.html.erb

2008 Barry Burd 42

The New PageBookstore\app\views\books\new.html.erb

2008 Barry Burd 43

The Show PageBookstore\app\views\books\show.html.erb

2008 Barry Burd 44

Fine tuning a Web application

2008 Barry Burd 45

Adding validation to the model code

2008 Barry Burd 46

Attempting to create a new record, but...

2008 Barry Burd 47

...validation errors

2008 Barry Burd 48

The views code takes

notice of errors

2008 Barry Burd 49

Rails has several validates methods

50 2008 Barry Burd

Relationships between tables

2008 Barry Burd 51

Bookstore\db\migrate\002_create_reviews.rb

2008 Barry Burd 52

Run the most recent migration

2008 Barry Burd 53

Bookstore\app\models\book.rb

2008 Barry Burd 54

Bookstore\app\models\review.rb

2008 Barry Burd 55

The Rails Console

2008 Barry Burd 56

2008 Barry Burd 57

Add code toBookstore\app\views\books\show.html.erb

2008 Barry Burd 58

Add a method toBookstore\app\controllers\books_controller.rb

2008 Barry Burd 59

2008 Barry Burd 60

2008 Barry Burd 61