sample02.rb

get '/sample02' do
  haml :sample02
end

post '/sample02' do

  set :client_id, params[:clientId]
  set :private_key, params[:privateKey]
  set :base_path, params[:basePath]

  begin

    if settings.base_path.empty? then settings.base_path = 'https://api.groupdocs.com' end

    GroupDocs.configure do |groupdocs|
      groupdocs.client_id = settings.client_id
      groupdocs.private_key = settings.private_key

      groupdocs.api_server = settings.base_path # default is 'https://api.groupdocs.com'
    end

    raise 'Please enter all required parameters' if settings.client_id.empty? or settings.private_key.empty?

    files_list = GroupDocs::Storage::Folder.list!('/', {})

    filelist = ''
    files_list.each { |element| filelist << "#{element.name}<br />" }

  rescue Exception => e
    err = e.message
  end

  haml :sample02, :locals => {:userId => settings.client_id, :privateKey => settings.private_key, :filelist => filelist, :err => err}
end