require "securerandom" FactoryBot.define do factory :bulk_upload_error do bulk_upload row { rand(9_999) } col { ("A".."Z").to_a.sample } cell { "#{col}#{row}" } tenant_code { SecureRandom.hex(4) } property_ref { SecureRandom.hex(4) } purchaser_code { SecureRandom.hex(4) } field { "field_#{rand(1..134)}" } error { "some error" } end end