RAILS email input with multiple=true

rails-email-multiple.rb

# simple_form sends params inside an array
# ["first@email.com,second@email.com"]
def email_cc_list=(list)
  write_attribute(:email_cc_list,
    Array.wrap(list).first.split(",").uniq.join(",")
  )
end


# is it possible the array ever holds more than 1 value?
# Array.wrap(list).map { |l| l.split(",") }.flatten.uniq.join(",")