Introduction to Cuba - Speaker Deck

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Francesco frodsan@me.com

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Cuba (‛ƅ㱼ƅ)‛ Ruby microframework for web development. 

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ʕ•ᴥ•ʔ ! • Small. • Focused. • Simple.  • Stable. • Rack.  • Fast.

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require "cuba"! ! Cuba.define do! on "home" do! res.write("Hello Cuba")! end! end

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Rules

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Cuba.define do! on "home" do # PATH == "/home"! ! res.write("Hello Cuba")! end! end

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Cuba.define do! on "home" do # PATH == "/home"! ! res.write("Hello Cuba")! end! ! on "about" do # PATH == "/about"! ! res.write("About us”)! end! end

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Captures

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Cuba.define do! on "hello/:name" do |name|! ! res.write("Hello #{ name }")! end! end! ! # /hello/frodsan => Hello frodsan

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Matchers

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Cuba.define do! on /hello\/(^[a-zA-Z]+$)/ do |name|! ! res.write("Hello #{ name }")! end! end! ! # /hello/frodsan => Hello frodsan! # /hello/123 =>

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Cuba.define do! on :name do |name|! ! res.write("Hello #{ name }")! end! end! ! # /frodsan => Hello frodsan! # /123 => Hello 123

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Cuba.define do! # Any expression that! # evaluates to `true`.! on (*) do! ! res.write("Hello Cuba")! end! end

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Cuba.define do! # Any expression that! # evaluates to `true`.! on true do! ! res.write("Hello Cuba")! end! end

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Cuba.define do! on false do! ! res.write("⊙﹏⊙")! end! ! on true do! ! res.write("the winner")! end! end

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Cuba.define do! on authenticated? do! # . . .! end! ! on true do! ! res.status = 401! ! res.write("Not authorized")! end! end

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Nested Blocks

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Cuba.define do! on "posts" do! # /posts/new! on "new" do! # . . .! end! ! ! ! # /posts/mypost! on :slug do |slug|! ! # . . .! end! end! end

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404 (Else)

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Cuba.define do! on "posts" do! on "new" do! ! # . . .! ! # on true do! on default do! res.status = 404! res.write("Not Found")! end! end! end

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Helpers

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Cuba.define do! on "posts" do! on get do! # METHOD == GET! end! ! on post do! on param("post") do |post|! end! end! end! end

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Composition

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class Users < Cuba  define do! on "posts" do! on "new" do! ! # . . .! end! ! on :slug do |slug|! ! # . . .! end! end! end! end

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Cuba.define do! on authenticated? do! run(Users)! end! ! on default do! ! res.status = 401! ! res.write("Not authorized")! end! end

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Stack

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ʕ•ᴥ•ʔ ! • hache • mote • mote-render • malone  • ohm • ost • rack-protection • requests • scrivener  • shield

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! on "signup" do! on post, param("user") do |params|! signup = Signup.new(params)! ! on signup.valid? do! user = User.create(params)! authenticate(user)! ! res.redirect("/dashboard")! end! ! on default do! end! end! end!

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! on "posts" do! on post, param("post") do |params|! end! ! on :id do |id|! post = Post[id]! ! on default do! render("post", post: post)! end! end! ! on default do! render("posts")! end! end!