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O QUE É?

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UMA ESPECIFICAÇÃO PARA COMUNICAÇÃO ENTRE APLICAÇÕES RUBY E SERVIDORES WEB

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Request WebServer Rack App

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API RACK APPQualquer objeto que responde ao metodo call e receba como

parâmetro um objeto com os dados da requisição

Retorna um array com 3 elementos[status, headers, response]

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API RACK APP

[status, headers, response]

to_i hash string each

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EXEMPLO

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proc {|env| [200,

{"content-Type": "text/html"}, ["Olá frevoonrails"]]

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RACK MIDDLEWARES

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Request

Middleware

Middleware

Rack App

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RAILS ON RACK

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RAKE MIDDLEWARE

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ADICIONANDO UM RACK MIDDLEWARE AO

RAILS

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Crie seu arquivo “rack.rb” e adicione na pasta lib ou initializers

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Adicione seu rack application application.rb

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Verifique com “rake middleware”

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USOS NA VIDA REAL

Contador de acessos Bloquear acessoDevise(Warden)

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REFERÊNCIAS

http://guides.rubyonrails.org/rails_on_rack.htmlhttp://rack.github.io/

https://www.youtube.com/watch?v=TslkdT3PfKc&https://github.com/hassox/warden

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OBRIGADO!!

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OPS MAIS UMA COISA!!

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