レビュー時の勘所１ if xxx.present?〜 → Object#try(ブロック渡し) - Qiita

first_user_fullname = "" if group.users.first.present? first_user = group.users.first first_user_fullname = first_user.last_name + " " + first_user.first_name else first_user_fullname = "名無しさん" end first_user_fullname = group.users.first.try do |first_user| first_user.last_name + " " + first_user.first_name end first_user_fullname ||= "名無しさん" Register as a new user and use Qiita more conveniently