Question

我试图运行http://localhost:3000/users/sign_up，但它给了我这个错误：

ActiveRecord::PendingMigrationError
Migrations are pending. To resolve this issue, run: bin/rake db:migrate RAILS_ENV=development

Rails.root: c:/xampp/htdocs/pinteresting

Application Trace | Framework Trace | Full Trace
activerecord (4.2.5) lib/active_record/migration.rb:392:in `check_pending!'
activerecord (4.2.5) lib/active_record/migration.rb:373:in `call'
actionpack (4.2.5) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
activesupport (4.2.5) lib/active_support/callbacks.rb:88:in `__run_callbacks__'
activesupport (4.2.5) lib/active_support/callbacks.rb:778:in `_run_call_callbacks'
activesupport (4.2.5) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (4.2.5) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (4.2.5) lib/action_dispatch/middleware/reloader.rb:73:in `call'
actionpack (4.2.5) lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
actionpack (4.2.5) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
web-console (2.2.1) lib/web_console/middleware.rb:39:in `call'
actionpack (4.2.5) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.2.5) lib/rails/rack/logger.rb:38:in `call_app'
railties (4.2.5) lib/rails/rack/logger.rb:20:in `block in call'
activesupport (4.2.5) lib/active_support/tagged_logging.rb:68:in `block in tagged'
activesupport (4.2.5) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (4.2.5) lib/active_support/tagged_logging.rb:68:in `tagged'
railties (4.2.5) lib/rails/rack/logger.rb:20:in `call'
actionpack (4.2.5) lib/action_dispatch/middleware/request_id.rb:21:in `call'

这让我很头疼。我是rails的新手，我确保通过devise gem正确设置了所有内容。那我该怎么办？有什么帮助吗？

我运行bin/rake db:migrate RAILS_ENV=development

但它说'bin'不是公认的内部或外部命令。在我问之前试过这个。

Answer 1

您可以调用相同命令的两种略有不同的方式： rake db:migrate RAILS_ENV=development会丢弃'bin'元素并且无论如何都应该正常工作。

或bundle exec rake db:migrate RAILS_ENV=development使用bundle exec在项目中运行命令。

确保从正确的目录运行这样的命令，从项目的根目录运行rails server等目录。

Answer 2

您可以尝试：

    ActiveRecord::Migrator.migrate("db/migrate/", nil)

ActiveRecord :: PendingMigrationError（DEVISE ERROR） - Rails

2 个答案: