Gem::MissingSpecError 插件依赖项

开发
1

我为 Discourse 创建了一个插件，并在 plugin.rb 中添加了一个 gem 依赖项，如下所示：

gem 'faraday-multipart', '1.1.0', require_name: 'faraday/multipart'

然后我在 app.yml 中引用了这个插件，并执行了 launcher rebuild app，收到了如下错误：

...
I, [2025-02-10T15:54:07.383295 #1]  INFO -- : > cd /var/www/discourse & su discourse -c 'bundle exec rake db:migrate'
rake aborted!
Gem::MissingSpecError: Could not find 'multipart-post' (~> 2.0) among 233 total gem(s) (Gem::MissingSpecError)
Checked in 'GEM_PATH=/var/www/discourse/vendor/bundle/ruby/3.3.0:/var/www/discourse/plugins/discourse-watermark/gems/3.3.6' at: /var/www/discourse/plugins/discourse-watermark/gems/3.3.6/specifications/faraday-multipart-1.1.0.gemspec, execute `gem env` for more information
/var/www/discourse/lib/plugin_gem.rb:25:in `load'
/var/www/discourse/lib/plugin/instance.rb:858:in `gem'
/var/www/discourse/plugins/discourse-watermark/plugin.rb:10:in `activate!'
/var/www/discourse/lib/plugin/instance.rb:801:in `instance_eval'
/var/www/discourse/lib/plugin/instance.rb:801:in `activate!'
/var/www/discourse/lib/discourse.rb:348:in `block in activate_plugins!'
/var/www/discourse/lib/discourse.rb:345:in `each'
/var/www/discourse/lib/discourse.rb:345:in `activate_plugins!'
/var/www/discourse/config/application.rb:233:in `block in <class:Application>'
/var/www/discourse/lib/plugin.rb:6:in `initialization_guard'
/var/www/discourse/config/application.rb:233:in `<class:Application>'
/var/www/discourse/config/application.rb:75:in `<module:Discourse>'
/var/www/discourse/config/application.rb:74:in `<top (required)>'
/var/www/discourse/Rakefile:7:in `<top (required)>'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.2.1/exe/rake:27:in `<top (required)>'
/usr/local/bin/bundle:25:in `load'
/usr/local/bin/bundle:25:in `<main>'
...
I, [2025-02-10T15:54:09.620121 #1]  INFO -- : gem install faraday-multipart -v 1.1.0 -i /var/www/discourse/plugins/discourse-watermark/gems/3.3.6 --no-document --ignore-dependencies --no-user-install
Successfully installed faraday-multipart-1.1.0
1 gem installed

I, [2025-02-10T15:54:09.625734 #1]  INFO -- : Terminating async processes
...
FAILED
...

所以它在 db:migrate 步骤失败了，尽管日志后面显示 faraday-multipart gem 已成功安装。我的猜测是 db:migrate 在 gem 安装之前运行，但我可能遗漏了什么，因为 Discourse 有很多带有 gem 依赖项的插件，它们都能正常工作。

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2

抱歉，我们的插件 gem 助手不会自动安装子依赖项，因此您需要手动安装它们。

以下是一个使用 faraday-multipart 的插件示例：

2 个赞
3

哦，这么快就回复了，谢谢！我甚至都没注意到它是一个子依赖项 :sweat_smile: 我会试试的。
更新。是的，这奏效了：

gem 'multipart-post', '2.4.1', require_name: 'multipart/post'
gem 'faraday-multipart', '1.1.0', require_name: 'faraday/multipart'

重要提示：子依赖项应放在原始依赖项之前，例如 multipart-post 必须放在 faraday-multipart 之前，就像您示例中那样。

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4

这是 Discourse 开发中的一个完整的小游戏 :wink:

（已移至 Dev）

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