Rails is Easy*

Rails is Easy

Rails is Easy*

Rails is Easy*

*for experienced web developers

The Rails Code Camp is not for complete beginners, each participant must have at least some programming background and

familiarity with model-view-controller architecture.

The Rails Code Camp is not for complete beginners, each participant must have at least some programming background and

familiarity with model-view-controller architecture.

We aren't joking.

And yeah, you'll probably be screwed if you also lied

about installing Rails 4.0.

We need you to focus in the next 2 hours.

Rails is Easy*

History Lesson

2006 – 2009

Rise of Rails

2006 – 2009

Consumer Enterprise

2006 – 2009

Exodus

Graduation

2006 – 2009

Consumer Enterprise

2006

● Easy to Write● Easy to Deploy

2006

● Easy to Write WRONG● Easy to Deploy WRONG

● Templating Language?

● Templating Language?● Programming Language?

● Templating Language?● Programming Language?

● Web Interface?

2006

Easy to Write WRONGand programmers were writing

wrong:

● No structure● Single pages doing many things

● etc.

Common Layers in anInformation System Logical Architecturehttp://en.wikipedia.org/wiki/Common_layers_in_an_information_system_logical_architecture

Presentation LayerApplication Layer

Business LayerInfrastructure Layer

http://en.wikipedia.org/wiki/Common_layers_in_an_information_system_logical_architecture

Presentation Layer?Application Layer?

Business Layer?Infrastructure Layer?

2006

2006

All the patterns in the world...

2006

Easy to Write WRONGand programmers were writing

wrong:

● No structure● Single pages doing many things

● etc.

2006

● With structure● Modular

● etc.

2006


● etc.● Too Complicated

XML Everywhere!

2006


● etc.

2006


● etc.● Reasonably Complicated

Best Practicesand

Conventions

Best Practicesand

Conventions

Web Application Structure

web server app server



MVC Web App Structure

MVC Model 2 Structure


webserver app server


app server


Controller


Controller

Model


Controller

Model


Controller

ModelView


Controller

ModelView


Controller

ModelView


ModelView

Router Controller


ModelView

Router Controller


ModelView

Router Controller


ModelView

Router Controller


ModelView

Router Controller

/public/


ModelView

Router Controller

/public//db//config/ database.yml


ModelView

Router Controller


/config/routes.rb


ModelView

Router Controller


/app/controllers/

/config/routes.rb


ModelView

Router Controller


/app/controllers/

/config/routes.rb

/app/models/


ModelView

Router Controller


/app/controllers/

/config/routes.rb

/app/models//app/views/


ModelView

Router Controller

/app/controllers//app/models//app/views//config/routes.rb/config/database.yml/db//public/

2013


ModelView

Router Controller


2013


ModelView

Router Controller


Rote Memorization Time!

Getting Started with Rails 4

http://edgeguides.rubyonrails.org/getting_started.html

http://edgeguides.rubyonrails.org/getting_started.html

Hello Rails!


ModelView

Router Controller



ModelView

Router Controller



ModelView

Router Controller


controller#action

class#method


ModelView

Router Controller


Getting Up and Running


ModelView

Router Controller



ModelView

Router Controller


Representational State Transfer (REST)

Prefix Verb URI Pattern Controller#Action posts GET /posts(.:format) posts#index POST /posts(.:format) posts#create new_post GET /posts/new(.:format) posts#newedit_post GET /posts/:id/edit(.:format) posts#edit post GET /posts/:id(.:format) posts#show PATCH /posts/:id(.:format) posts#update PUT /posts/:id(.:format) posts#update DELETE /posts/:id(.:format) posts#destroy


ModelView

Router Controller



ModelView

Router Controller



ModelView

Router Controller

/app/controllers//app/models//app/views//config/routes.rb/config/database.yml/db/migrate//public/


ModelView

Router Controller

/app/controllers//app/models//app/views//config/routes.rb/config/database.yml/db/migrate//public/

ActiveRecord models have, by default, a integer primary key "id" and two timestamps "created_at"

and "updated_at".

All three are automatically managed by ActiveRecord.

Show


ModelView

Router Controller



ModelView

Router Controller



ModelView

Router Controller



ModelView

Router Controller


When a controller renders a view, all instance variables (e.g. @foo) are

cloned inside the view


ModelView

Router Controller



ModelView

Router Controller


Validation


ModelView

Router Controller


Updating

Partials


ModelView

Router Controller


Deleting

Congratulations!

Congratulations!

We've barely scratched the surface of Rails.

Congratulations!

Normally this takes 2 days to understand

Congratulations!

Normally this takes 2 days to understand,even more if self-study

What we haven't covered:


● Associations - table joins made simple


● Associations - table joins made simple(?)


● Associations - table joins made simple(?)● Gems - plugins, libraries, and Bundler



● Testing - code that tells you what's broken



● Testing - code that tells you what's broken● Asset Pipeline - serve compressed and up-to-

date assets in production




date assets in production● Deployment - deploy with only one command





● Ruby itself!!!





● Ruby itself!!!● and so on...


Rails Culture

Rails Culture

Rails Culture

● The personalities

Rails Culture

● The personalities● Our attitude towards code

Rails Culture

● The personalities● Our attitude towards code● Our attitude towards work

Rails Culture

● The personalities● Our attitude towards code● Our attitude towards work

● How the hell does a "slow" framework that doesn't work well on Windows get such a high

market demand for developers?!?!

Cheat Sheets:

http://pragtob.github.io/rails-beginner-cheatsheet/

http://apidock.com

http://pragtob.github.io/rails-beginner-cheatsheet/

http://apidock.com/

Technology

Rails is Easy*