Sinatra - response.set_cookie doesn't work
The documentation on http://sinatra-book.gittr.com/#cookies says to use the set_cookie helper, but in newer versions of Sinatra (at least from 1.2.0+ and possibly earlier), you should use response.set_cookie to set cookies.
response.set_cookie("my_cookie", :value => "value_of_cookie", :domain => myDomain, :path => myPath, :expires => Date.new(2020,1,1))cookie = request.cookies["my_cookie"]SUMMARY
don't set localhost as a domain for your cookies because you need to set it to "" or FALSE