RESTFul-1.md

Basic Sinatra RESTful API

Find a partner and begin typing the following exercises. You should alternate who types and who explains the output.

Get Single Parameter from URL

add the following code snippet to ```app.rb`` file:

get "/getname/:name" do |name|
    "Welcome, #{params[:name]}!"
end

Restart the App

Type CTRL+C to terminal the running Sinatra app; and type the following command in C9 terminal to restart it:
Note: Type the following content literally, do not replace anything.

ruby app.rb -p $PORT -o $IP

Try Your App

In your browser, type the following URL:

http://<project-name>-<username>.c9users.io/getname/<your name>

Try to explain what happended.

Get Multiple Parameters from URL

add the following code snippet to app.rb:

get '/getname/:name/:city' do
  "Hey there #{params[:name]} from #{params[:city]}."
end

In your browser, type the following URL:

http://<project-name>-<username>.c9users.io/getname/<your name>/<your city>

Try to explain what happended.

Duplicated Routing

add the following code snippet to app.rb (right after the above code snippet)

get '/getname/:name/:city' do
  "Alternative routing result: #{params[:name]} from #{params[:city]}."
end

Restart the server, in your browser, type the following URL:

http://<project-name>-<username>.c9users.io/getname/<your name>/<your city>

See the result in the browser and reorganize your code to change the code snippet order as follows:

get '/getname/:name/:city' do
  "Alternative routing result: #{params[:name]} from #{params[:city]}."
end

get '/getname/:name/:city' do
  "Hey there #{params[:name]} from #{params[:city]}."
end

Try to explain what happended.

Next

add the following code snippet to the end of app.rb:

get '/getname/*' do
    arr = params[:splat]
    ret = ''
    arr[0].split('/').each do |param| 
        ret += (param + '<br/>')
    end
    ret
end

In your browser, type the following URL:

http://<project-name>-<username>.c9users.io/getname/1/2/3/4

Try to explain what happended.

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