Question

This seems like it should be simple but I can’t find an answer anywhere!

I’m building a sample_data rake file in Rails to populate my db using the Faker gem. (though I don’t think I need that gem for just generating integers)

Some of the fields need to be an integer within a set range but each must be unique. For instance:

10.times do |a|
  a.special_number = rand(1..10)
end

works well except for the fact that the numbers aren’t unique…

Answer 1

Instead of trying to generate a list of unique random numbers, why don’t you generate a range of numbers and shuffle that list?