Q&A
内容
Twitter型のポートフォリオを作成しています。ユーザーが記事（tourモデル）をストックできるお気に入り機能を実装中(app/model/user.rbで作業中)にrails sしたところ/home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activerecord-5.2.3/lib/active_record/persistence内の引数が合わないとエラーが出ました。cloud9を使用しているのですがこのパスはどこを指しているのか分かりません。rails db:migrateの際も同様のエラーが出ます。助けてください！
発生している問題・エラーメッセージ
rails sした時
=> Booting Puma => Rails 5.2.3 application starting in development => Run `rails server -h` for more startup options Exiting Traceback (most recent call last): 102: from bin/rails:3:in `<main>' 101: from bin/rails:3:in `load' 100: from /home/ec2-user/environment/new_app2/bin/spring:15:in `<top (required)>' 99: from /home/ec2-user/environment/new_app2/bin/spring:15:in `require' 98: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `<top (required)>' 97: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `load' 96: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.0/bin/spring:49:in `<top (required)>' 95: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.0/lib/spring/client.rb:30:in `run' 94: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.0/lib/spring/client/command.rb:7:in `call' 93: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.0/lib/spring/client/rails.rb:28:in `call' 92: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.0/lib/spring/client/rails.rb:28:in `load' 91: from /home/ec2-user/environment/new_app2/bin/rails:9:in `<top (required)>' 90: from /home/ec2-user/environment/new_app2/bin/rails:9:in `require' #文字数制限のため中略 9: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies/interlock.rb:14:in `block in loading' 8: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:37:in `block in load_interlock' 7: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:373:in `block in require_or_load' 6: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:475:in `load_file' 5: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:661:in `new_constants_in' 4: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:476:in `block in load_file' 3: from /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:476:in `load' 2: from /home/ec2-user/environment/new_app2/app/models/user.rb:1:in `<top (required)>' 1: from /home/ec2-user/environment/new_app2/app/models/user.rb:7:in `<class:User>' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activerecord-5.2.3/lib/active_record/persistence.rb:138:in `destroy': wrong number of arguments (given 0, expected 1) (ArgumentError)
rails db:migrateしたとき
/home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activerecord-5.2.3/lib/active_record/persistence.rb:138:in `destroy': wrong number of arguments (given 0, expected 1) (ArgumentError) ec2-user:~/environment/new_app2 $ rails db:migrate rails aborted! ArgumentError: wrong number of arguments (given 0, expected 1) /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activerecord-5.2.3/lib/active_record/persistence.rb:138:in `destroy' /home/ec2-user/environment/new_app2/app/models/user.rb:7:in `<class:User>' /home/ec2-user/environment/new_app2/app/models/user.rb:1:in `<top (required)>' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:476:in `load' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:476:in `block in load_file' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:661:in `new_constants_in' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:475:in `load_file' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:373:in `block in require_or_load' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:37:in `block in load_interlock' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies/interlock.rb:14:in `block in loading' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/concurrency/share_lock.rb:151:in `exclusive' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies/interlock.rb:13:in `loading' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:37:in `load_interlock' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:356:in `require_or_load' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:510:in `load_missing_constant' #文字数制限のため中略' /home/ec2-user/environment/new_app2/bin/rails:9:in `<top (required)>' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.0/lib/spring/client/rails.rb:28:in `load' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.0/lib/spring/client/rails.rb:28:in `call' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.0/lib/spring/client/command.rb:7:in `call' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.0/lib/spring/client.rb:30:in `run' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.0/bin/spring:49:in `<top (required)>' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `load' /home/ec2-user/.rvm/gems/ruby-2.6.3/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `<top (required)>' /home/ec2-user/environment/new_app2/bin/spring:15:in `require' /home/ec2-user/environment/new_app2/bin/spring:15:in `<top (required)>' bin/rails:3:in `load' bin/rails:3:in `<main>' Tasks: TOP => db:migrate => db:load_config => environment (See full trace by running task with --trace)
app/model/user.rb
ruby
1class User < ApplicationRecord 2 3has_many :tours, dependent: :destroy 4has_many :comments, dependent: :destroy 5has_many :likes, dependent: :destroy 6has_many :liked_tours, through: :likes, source: :tour 7has_many :favorites,dependent:destroy 8has_many :favorite_tours,through: :favirote, source: :tour 9 10has_many :relationships 11has_many :followings, through: :relationships, source: :follow 12has_many :reverse_of_relationships, class_name: 'Relationship', foreign_key: 'follow_id' 13has_many :followers, through: :reverse_of_relationships, source: :user 14 15 16devise :database_authenticatable, :registerable, 17 :recoverable, :rememberable, :validatable,:omniauthable 18mount_uploader :userimage, ImagesUploader 19 20 21 def remember_me 22 true 23 end 24 25 def fav(tour) 26 self.favorite.find_or_create_by(tour_id: tour.id) 27 end 28 29 def disfav(tour) 30 un_fav=Favorite.find_by(tour_id: tour.id) 31 un_fav.destroy if un_fav 32 end 33 34 def follow(other_user) 35 unless self == other_user 36 self.relationships.find_or_create_by(follow_id: other_user.id) 37 end 38 end 39 40 def unfollow(other_user) 41 relationship = self.relationships.find_by(follow_id: other_user.id) 42 relationship.destroy if relationship 43 end 44 45 def following?(other_user) 46 self.followings.include?(other_user) 47 end 48 49 def self.find_for_google_oauth2(auth) 50 user = User.where(email: auth.info.email).first 51 unless user 52 user = User.create(name: auth.info.name, 53 provider: auth.provider, 54 uid: auth.uid, 55 email: auth.info.email, 56 token: auth.credentials.token, 57 password: Devise.friendly_token[0, 20]) 58 end 59 user 60 end 61 62 def update_without_current_password(params, *options) 63 params.delete(:current_password) 64 result = update_attributes(params, *options) 65 clean_up_passwords 66 result 67 end 68end 69 70
補足情報（FW/ツールのバージョンなど）
rails 5.2.1
回答1件
0
ベストアンサー
エラーメッセージのエラー行の表示には、たくさんのエラー行が出てきて読みづらいかもしれませんが、だいたいは一番上の方から数行、または一番下の方から数行くらいしか重要ではないことが多いです。
この場合、rails sの方は
1: from /home/ec2-user/environment/new_app2/app/models/user.rb:7:in `<class:User>'
のあたり、rails db:migrateの方は
/home/ec2-user/.rvm/gems/ruby-2.6.3/gems/activerecord-5.2.3/lib/active_record/persistence.rb:138:in `destroy' /home/ec2-user/environment/new_app2/app/models/user.rb:7:in `<class:User>'
このあたりが原因がありそうです。
なお、 /.rvm/gems/ruby-2.6.3/ といった文字列が含まれているパスの行は、まずは無視して大丈夫です。自分で書いたアプリのコードではなく、Rails自体のコードだからです（Rails自体のバグや不整合もあるのですが、それよりはアプリ側のコードが問題になるケースが多いです）。
というわけで、問題はuser.rbの7行目にありそうです。ここを見ると、以下のようになっています。
ruby
1has_many :favorites,dependent:destroy
これはちょっと気づきにくいかもしれませんが、コロンが足りてないですね。dependent:destroyではなくdependent: :destroyと書く必要がありそうです。他の行はそうなってますよね。
こう書かないとdestroyがシンボルにならず、引数のないメソッド呼び出しと解釈されたため、引数の数のエラーが出てたんではないかと思います。
というわけで、まずはここを修正してみてください。
投稿2019/08/16 04:04
総合スコア1877
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2019/08/16 07:25