Help us understand the problem. What is going on with this article?

db/seeds.rbの中身を変更したらrails db:seedできない。そんなときにありがちな原因

何が起こったか

db/seeds.rbの中身を変更したら、rails db:seedが失敗するようになりました。

# rails db:seed
rails aborted!
SyntaxError: /var/www/sample_app/db/seeds.rb:5: syntax error, unexpected tIDENTIFIER, expecting ')'
            admin: true)
            ^~~~~
/usr/local/bundle/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:286:in `load'
...略

この後やたら長いスタックトレースが流れてきて面食らいます。

原因

原因は、db/seeds.rbで、単に項目区切りのカンマを入れ忘れていたことでした。db/seeds.rbを以下のように修正します。

db/seeds.rb
  User.create(name:                 "Example User",
              email:                "example@railstutorial.org",
              password:             "foobar",
-             password_confirmation: "foobar"
+             password_confirmation: "foobar",
              admin: true)
  ...略
# rails db:seed

今度こそrails db:seedは成功するはずです。なお、rails db:seedが正常に完了した場合は、シェルに何も表示されません。

Why not register and get more from Qiita?
  1. We will deliver articles that match you
    By following users and tags, you can catch up information on technical fields that you are interested in as a whole
  2. you can read useful information later efficiently
    By "stocking" the articles you like, you can search right away
Comments
No comments
Sign up for free and join this conversation.
If you already have a Qiita account
Why do not you register as a user and use Qiita more conveniently?
You need to log in to use this function. Qiita can be used more conveniently after logging in.
You seem to be reading articles frequently this month. Qiita can be used more conveniently after logging in.
  1. We will deliver articles that match you
    By following users and tags, you can catch up information on technical fields that you are interested in as a whole
  2. you can read useful information later efficiently
    By "stocking" the articles you like, you can search right away
ユーザーは見つかりませんでした