how can i generate random odd integers?
i want it to refer to user.id
Something like: 2 * rand(6) + 1 ? The example will give you an odd number between 1 and 11 (both included). Adapt the number in rand as needed.
More details here http://ruby-doc.org/core/classes/Kernel.html#M005974
As a side note: Google is your friend.