3 #Rails

http://railstutorial.jp/

Rails

by YassLab

Slideshare

http://www.slideshare.net/yasulab/presentations

Cloud9

1. 2. URL 3.

https://ide.c9.io/yasulab/rails-tutorial

https://rails-tutorial-yasulab.c9users.io/

URL “Collaborate” → “Group Chat”

! :)

Ready?

!

3 #Rails

http://railstutorial.jp/

Rails

by YassLab

• Scaffold

•

• REST , Rails

.

• scaffold . scaffold .

• ,

!!

Model-View-Controller (MVC)

Router

Controller

View

Model

DatabaseReq.

HTML

Model-View-Controller (MVC)

Router

Controller

View

Model

DatabaseReq.

HTML

2

Model-View-Controller (MVC)

Router

Controller

View

Model

DatabaseReq.

HTML

3

• .

• scaffold .

• .

• .

• ( ).

• DRY(Don’t Repeat Yourself)

• DRY

3 3.1

http://railstutorial.jp/

Rails

by YassLab

1. Rails 5.0.0.1 sample_app $ rails _5.0.0.1_ new sample_app

2. Gemfile / bundle install

3. Git / README

4. BitBucket (or GitHub)

5. Heroku

3.1

: git branch

master master mastermastercommit commit commit

: git branch

master master mastermaster

master

fill-in

master

fill-in

commit commit commit

checkout -b fill-in

commit

merge fill-in

master

checkout mastercheckout fill-in

3 3.2

http://railstutorial.jp/

Rails

by YassLab

• StaticPages :$ rails generate controller StaticPages home help

1. Rails Router

2. StaticPages Controller

3. StaticPages View

1. Home

2. Help

3.2

:

3 3.3

http://railstutorial.jp/

Rails

by YassLab

1.

2. ::

Red → Green → Refactor

• Home/Help

• About

3.

3.3

1.

2. ::

Red → Green → Refactor

• Home/Help

• About

3.

3.3

Router

Controller

View

Model

DatabaseReq.

HTML

Action not found

NameError: undefined local …

Missing a template

☝

: ( : )

• :

•

• ( )

•

• :

•

• HTML

• ! 😸 →

•

• /

• →WIP PR→ → 👌✨

• … 😓 →

• Demo Proof of Concept

: ( : )

:

3 3.4

http://railstutorial.jp/

Rails

by YassLab

• TDD 1. RED ( ) 2. GREEN ( ) 3. REFACTOR ERB (👈 )

• 1. 2. 3. Heroku

3.4

:

Home Home | Ruby on Rails Tutorial Sample App

Help Help | Ruby on Rails Tutorial Sample App

About About | Ruby on Rails Tutorial Sample App

Router

Controller

View

Model

DatabaseReq.

HTML

☝

• TDD 1. RED ( ) 2. GREEN ( ) 3. REFACTOR ERB (👈 )

• 1. 2. 3. Heroku

3.4

•

• scaffold :

•

•

•

• rails generate About

• TDD DRY

Model-View-Controller (MVC)

Router

Controller

View

Model

DatabaseReq.

HTML

3

Rails http://railsguides.jp/getting_started.html

http://railsguides.jp/layouts_and_rendering.html

Railshttp://railsguides.jp/routing.html

• :)

• : http://railstutorial.jp/seminars

• :) ,

.

• , .

!( ! 📝)

!

3 #Rails

http://railstutorial.jp/

Rails

by YassLab