Architecture Over Framework: Rethink Your App Structure

Architecture Over FrameworkRethink Your App Structure

Tweet@_swanand

GitHub@swanandp

StackOverflow@18678

Build { Simplero }

[email protected]

Ruby, Clojure, Lisp, Rails,

Android, Emacs, TextMate,

RubyMine, Minitest, MySQL,

Zsh, Curl, Gmail, Hadoop,

Mavericks, Solarized,

Retina-MBP, Nexus 5

Oscar Wilde, Robert Jordan, J K Rowling, Quentin

Tarantino, Chris Nolan, Leonardo DiCaprio, Charlize

Theron, Metallica, Dream Theatre, Pink Floyd

!if magic_code puts "I am in IF block"else puts "In ELSE block I am"end

!=> I am in IF block=> In ELSE block I am

how?

!if fork puts "I am in IF block"else puts "In ELSE block I am"end

!=> I am in IF block=> In ELSE block I am

how?

Looking Ahead

Why do this ?

Case Study: Discourse

Looking Ahead

Why do this ? Case Study: Discourse

Why do this ?

Clear Intent

Better Understanding

Why do this ?

Clear Intent Better Understanding

Architecture

Elements of a system

and their relationship

with each other

Architecture

Designed such that

intent is apparent and

palpable

FrameworkAn abstraction you

build upon, to provide

app specific software

This picture screams RAILS!

–Robert Martin

“This is good for DHH; but

not So good for you.”

http://www.confreaks.com/videos/759-rubymidwest2011-keynote-architecture-the-lost-years

Why do this ?

Clear Intent

Better Understanding

Debugging

bad code:

Frustration

Debugging

good code:

Enlightenment

Debugging

good code:

Learning

Looking Ahead

Why do this?

Case Study: Discourse

That’s not a lot, but

if you are new to

the project, then …

http://media0.giphy.com/media/KE9cblgPK6EPS/200_s.gif

Before

After

File lookups are

fixed by managing

load path

Const lookups are

fixed by managing

auto-load path

config/application.rb

$ rails console

$ rails console

http://38.media.tumblr.com/tumblr_maeu8e5wuj1rxmai6o1_500.gif

First real limitation:

namespace based

look ups

application_controller

Second limitation:

unfriendly helper

customisation

Second limitation:

unfriendly <foo>

customisation

action_controller/helpers

rails/railtie

config/helper_railtie

Looking BackFile structure (Load Path)

Const lookups (Auto Loads)

View Paths (Namespacing)

Helper Paths (Railties)

Rearrange tests

Rearrange assets

Custom Rake tasks

Possibilities

Muddle with Metal

Build your Rackware

Examine pre-forking

Possibilities

Thank you!

Questions?