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Sinatra

Sinatra

Sinatra is a Web Application Framework. It includes a Web Server and lets you write code to show when people request web pages.

Hi, Sinatra

  1. install Sinatra by running gem install sinatra on the command line

  2. create a file called hi.rb containing this:

    require 'sinatra'

get '/hi' do
  "Hi!"
end

  3. run ruby hi.rb

Now open a Web Browser (like Firefox or Chrome or Safari or Internet Explorer) and enter the following URL into the address bar:

http://localhost:4567/hi

Congratulations

You just wrote a web server.

No, really.

Hello, Whoever

Change hi.rb to look like this:

require 'sinatra'

get '/hi/:who' do
  "Hi " + params[:who] + "!"
end

Now visit the following URL:

http://localhost:4567/hi/alice

LAB: Yeller

Make a route in your Sinatra application so that when someone requests this:

/yell/ahoy

they see this:

AHOY!!!

and when someone requests this:

/yell/dinnertime

they see this:

DINNERTIME!!!

Detour: Deploying to Heroku