Rack a framework to roll your own

RACKa framework to roll your own

@nishantmodak

Revealing Hour Creations

t

revealinghour.in

Donald Knuth

Email is a wonderful thing for people whose role in life is to be on top of things. But not for me; my role is to be on the bottom of things.http://www-cs-faculty.stanford.edu/~knuth/email.html

SERVER

What is Rack?

APPLICATION / FRAMEWORK

SERVER

1. Web Server Interface 2. Tool for composing web applications 3. Collection of middleware utilities

What is Rack?

RACK

config.ru

$ rackup

APP

HTTP

INTERMEDIARIES

Middleware

HTTP

APPLICATION

M I D D L E W A R E

DSL use, run, map

lib/builder.rb

DEMO

1. MyRackApp

2. Middlewares - use / run / map

3. Rack Code

Rack::Builder

> rake middleware

MIDDLEWARE

MIDDLEWARE

MIDDLEWARE

ROUTING

MIDDLEWARE APPLICATION

APPLICATION

SERVER

FRAMEWORK

Yay! Full Stack Developers!

WHY ANOTHER FRAMEWORK ?

Yes, We CAN !

CRUDingly awful

Maybe

- fearware

- too bloated

- too simple

- over default ing

-

Maybe

- fearware

- too bloated

- too simple

- over default ing

- troll your own framework

justrails.rb

➔ Controllers ➔ Routing

➔ Views

➔ Models

1_application

2_Controllers

- Conventions

- URL Matching

- Autoloading

Conventions

1. <host>/products/index

2. ProductsController#index

3. products_controller

4. <app>/application/controllers

Autoloading

- const_get

- const_missing

- $LOAD_PATH

3_View

Interface to several Ruby template engines

3_View

Interface to several Ruby template engines

4_Methods as Rack Applications

5_Routing

Options?

➔ Middlewares ➔ Action* , Active*

➔ Inheritance

References

- edgeguides.rubyonrails.org/rails_on_rack.html

- rebuilding-rails.com

- Sinatra, Rails, Thin

Thank You!