dropbox_client_tips.rb

# A. Puting a file to dropbox
@db_session.client.put_file("/Some Shared Dropbox Folder the User has access to/my_data_file.csv","#{Rails.root}/tmp/my_data_file.csv")

# B. Getting a file from dropbox (from dropbox site)
contents, metadata = @db_session.client.get_file_and_metadata('/magnum-opus.txt')
open('magnum-opus.txt', 'w') {|f| f.puts contents }