質問編集履歴
3
修正
test
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File without changes
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test
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@@ -79,3 +79,21 @@
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end
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end
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rails consoleでUser.allをする
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irb(main):001:0> User.all
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User Load (2.0ms) SELECT "users".* FROM "users" LIMIT ? [["LIMIT", 11]]
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=> #<ActiveRecord::Relation []>
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irb(main):002:0>
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2
修正
test
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test
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@@ -9,8 +9,6 @@
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railsチュートリアル https://railstutorial.jp/chapters/modeling_users?version=5.1#cha-modeling_users
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11
11
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-
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-
参考サイト https://qiita.com/yohekan/items/3aea65c4bd0f5c4d15b8
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@@ -61,3 +59,23 @@
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Tasks: TOP => db:migrate
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(See full trace by running task with --trace)
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20180612144158_add_index_to_users_email.rbのコード
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class AddIndexToUsersEmail < ActiveRecord::Migration[5.1]
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def change
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add_index :users,:email, unique: true
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end
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end
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1
追加説明
test
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@@ -1 +1 @@
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1
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railsチュートリアル6.2.5
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rails db:migrateができない（railsチュートリアル6.2.5）
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test
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railsチュートリアル https://railstutorial.jp/chapters/modeling_users?version=5.1#cha-modeling_users
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参考サイト https://qiita.com/yohekan/items/3aea65c4bd0f5c4d15b8
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rails db:migrate RAILS_ENV=test
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== 20180612144158 AddIndexToUsersEmail: migrating =============================
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-- add_index(:users, :email, {:unique=>true})
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rails aborted!
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StandardError: An error has occurred, this and all later migrations canceled:
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SQLite3::ConstraintException: UNIQUE constraint failed: users.email: CREATE UNIQUE INDEX "index_users_on_email" ON "users" ("email")
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C:/Users/sk/programming/sample_app/db/migrate/20180612144158_add_index_to_users_email.rb:3:in `change'
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bin/rails:4:in `require'
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bin/rails:4:in `<main>'
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Caused by:
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ActiveRecord::RecordNotUnique: SQLite3::ConstraintException: UNIQUE constraint failed: users.email: CREATE UNIQUE INDEX "index_users_on_email" ON "users" ("email")
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C:/Users/sk/programming/sample_app/db/migrate/20180612144158_add_index_to_users_email.rb:3:in `change'
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bin/rails:4:in `require'
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bin/rails:4:in `<main>'
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Caused by:
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SQLite3::ConstraintException: UNIQUE constraint failed: users.email
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C:/Users/sk/programming/sample_app/db/migrate/20180612144158_add_index_to_users_email.rb:3:in `change'
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56
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57
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bin/rails:4:in `require'
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bin/rails:4:in `<main>'
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60
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61
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Tasks: TOP => db:migrate
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62
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63
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(See full trace by running task with --trace)
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