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