我正在关注rails教程.我在上. 6,我在sqlite3上遇到一个奇怪的错误(为了记录,我使用的是sqlite 1.3.10版本,教程使用的是1.3.9)
运行rake db:migrate时我没有收到错误,但是当我为测试环境运行迁移时,我得到的是:
$bundle exec rake test:models rake aborted! ActiveRecord::PendingMigrationError: Migrations are pending. To resolve this issue,run: bin/rake db:migrate RAILS_ENV=test sample_app/test/test_helper.rb:3:in `<top (required)>' sample_app/test/models/user_test.rb:1:in `require' sample_app/test/models/user_test.rb:1:in `<top (required)>' Tasks: TOP => test:models (See full trace by running task with --trace) $bundle exec rake db:migrate RAILS_ENV=test == 20150628011937 AddindexToUsersEmail: migrating =========================== == -- add_index(:users,:email,{:unique=>true}) rake aborted! StandardError: An error has occurred,this and all later migrations canceled: sqlite3::ConstraintException: UNIQUE constraint Failed: users.email: CREATE UNIQUE INDEX "index_users_on_email" ON "users" ("email")sample_app/db/migrate/20150628011937_add_index_to_users_email.rb:3:in `change' C:in `migrate' ActiveRecord::RecordNotUnique: sqlite3::ConstraintException: UNIQUE constrain t Failed: users.email: CREATE UNIQUE INDEX "index_users_on_email" ON "users" ("email") sample_app/db/migrate/20150628011937_add_index_to_users_email.rb:3:in `change' C:in `migrate' sqlite3::ConstraintException: UNIQUE constraint Failed: users.email sample_app/db/migrate/20150628011937_add_index_to_users_email.rb:3:in `change' C:in `migrate' Tasks: TOP => db:migrate (See full trace by running task with --trace)
这是我的user.rb模型:
class User < ActiveRecord::Base before_save { self.email = email.downcase } validates :name,presence: true,length: { maximum: 50 } VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i validates :email,length: { maximum: 255 },format: { with: VALID_EMAIL_REGEX },uniqueness: { case_sensitive: false } end
这是我最近的迁移
class AddindexToUsersEmail < ActiveRecord::Migration def change add_index :users,unique: true end end
如果相关,我可以发布任何其他文件.在此先感谢您的帮助!
解决方法
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