update_collaborator.rb

 #begin @eolivar RKM-2780 07/03/2018
    def create_or_update_optionals user, optionals
      unless !optionals.present?
        optionals = optionals.select { |k, v| (v[:value].nil? && v[:id].present?) || (v[:value].present? && !v[:value].empty?) }

        optionals.each do |key, value|
          user_optional = UserOptional.where(id: value[:id]).first unless !value[:id].present?
          
          if user_optional.present? && value[:value].nil?
            user_optional.destroy
            next
          end

          unless !value[:value].present?
            user_optional = user.user_optionals.find_or_create_by(optional_id: value[:optional_id]) unless user_optional.present?
            user_optional.value = value[:value]
            user_optional.save
          end
        end
      end
    end
    #end @eolivar RKM-2780 07/03/2018