Sinatra

Question 1

Sinatra

steps to create a new Sinatra app

Answer 1

mkdir app && touch app/Gemfile app/app.rb

mkdir app/views && touch app/views/layout.erb app/views/index.erb

mkdir app/test && touch app/test/app_test.rb

mkdir app/assets

mkdir app/public

Gemfile

source ‘https://rubygems.org’ ruby ‘2.3.1’

gem ‘sinatra’ gem ‘minitest’

$ bundle install

app.rb

require ‘sinatra’

require ‘sinatra/reloader’

configure do

enable :sessions

set :session_secret, ‘secret’

set :erb, escape_html: true

end

get ‘/’ do

erb :index

end

Question 2

Sinatra

escape all HTML by default

Answer 2

set :erb, escape_html: true

Question 3

Sinatra

set up a test file using Minitest and Sinatra Rack

Answer 3

touch test/app_test.rb

app_test.rb

require ‘minitest’

require ‘minitest/autorun’

require ‘rack/test’

require_relative ‘../app.rb’

Minitest::Reporters.use!

class AppTest

include Rack::Test::Methods

def app

Sinatra::Application

end

def setup

end

def teardown

end

def session

last_request.env[“rack.session”]

end

Question 4

Sinatra

an instance of Rack::MockResponse; comes from the Rack::Test::Methods module; contains information about the response generated by the application returned by a method called app

Answer 4

last_response

Question 5

Sinatra

an instance of Rack::MockRequest; comes from the Rack::Test::Methods module; it represents the last request to the app

Answer 5

last_request

Question 6

Sinatra

set a custom HTTP header in the response from a Sinatra app

Answer 6

header[‘Content-Type’] = ‘text/html’

Question 7

Sinatra

specify the response status code in a Sinatra app

Answer 7

status 422

Question 8

Sinatra

mkdir app && touch app/Gemfile app/app.rb

mkdir app/views && touch app/views/layout.erb app/views/index.erb

mkdir app/test && touch app/test/app_test.rb

mkdir app/assets

mkdir app/public

Gemfile

source ‘https://rubygems.org’ ruby ‘2.3.1’

gem ‘sinatra’ gem ‘minitest’

$ bundle install

app.rb

require ‘sinatra’

require ‘sinatra/reloader’

configure do

enable :sessions

set :session_secret, ‘secret’

set :erb, escape_html: true

end

get ‘/’ do

erb :index

end

Answer 8

steps to create a new Sinatra app

Question 9

Sinatra

set :erb, escape_html: true

Answer 9

escape all HTML by default

Question 10

Sinatra

touch test/app_test.rb

app_test.rb

require ‘minitest’

require ‘minitest/autorun’

require ‘rack/test’

require_relative ‘../app.rb’

Minitest::Reporters.use!

class AppTest

include Rack::Test::Methods

def app

Sinatra::Application

end

def setup

end

def teardown

end

def session

last_request.env[“rack.session”]

end

Answer 10

set up a test file using Minitest and Sinatra Rack

Question 11

Sinatra

last_response

Answer 11

an instance of Rack::MockResponse; comes from the Rack::Test::Methods module; contains information about the response generated by the application returned by a method called app

Question 12

Sinatra

last_request

Answer 12

an instance of Rack::MockRequest; comes from the Rack::Test::Methods module; it represents the last request to the app

Question 13

Sinatra

header[‘Content-Type’] = ‘text/html’

Answer 13

set a custom HTTP header in the response from a Sinatra app

Question 14

Sinatra

status 422

Answer 14

specify the response status code in a Sinatra app

Question 15

Sinatra

object available to a Sinatra application that contains methods pertaining to logging messages

Answer 15

logger

ex

logger.info “message”

Question 16

Sinatra

with ‘sinatra/reloader’, let Sinatra know about other files that need to be reloaded when changes are saved

Answer 16

also_reload(‘filepath.ext’)

Question 17

group code you only want executed in development environment without multiple conditional statements

Answer 17

configure(:development) do

require ‘sinatra/reloader’

also_reload ‘some_file.rb’

end