Could not find generator devise:install.

转载于 2011-12-25 13:07:06 发布 · 811 阅读

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本文介绍了在Rails3项目中正确配置所需gems的方法。当尝试使用未在Gemfile中声明的gem（如devise）时，Rails将无法检测到并加载该gem。解决此问题只需在Gemfile中添加gem名称及其版本号，然后重新运行安装命令。

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Something I keep forgetting about, is how Rails 3 treats gems. Any gem you want to use (in this case it was devise) needs to be setup in the Gemfile.

If you try to run Devise’s installation: rails generate devise:install you’ll get Could not find generator devise:install.

What happens is rails doesn’t detect that the devise gem is needed, and therefore doesn’t load it. All you’ve got to do is open the Gemfile for your project and add the following line, where the gem version matches what you are currently using: