尝试启动 Rails 引擎服务器时未初始化的常量 Rails::Command::Actions::APP_PATH (NameError) [英] uninitialized constant Rails::Command::Actions::APP_PATH (NameError) when trying to start Rails engine server

问题描述

完整的错误是

~/.gem/ruby/2.4.0/gems/railties-5.1.5/lib/rails/command/actions.rb:8:in `set_application_directory!': uninitialized constant Rails::Command::Actions::APP_PATH (NameError)

我最近从 Rails 4.x 升级到 5.x.

I recently upgrade from Rails 4.x to 5.x.

推荐答案

您需要为虚拟应用程序生成(或重新生成)binstubs".

You need to generate (or regenerate) "binstubs" for the dummy application.

cd spec/dummy
bundle exec rails app:update:bin

您现在应该可以从 spec/dummy 目录启动虚拟应用程序，如下所示:

You should now be able to start the dummy application, from the spec/dummy directory, as such:

bundle exec bin/rails server

spec/dummy/script目录也可以删除.

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