ruby 如何仅从 Gemfile 中查看依赖关系树？

How to see the dependency tree just from Gemfile?

提问by Mohit Verma

I am getting the following error when doing bundle install

执行时出现以下错误 bundle install

Make sure that `gem install couchbase -v '1.3.3'` succeeds before bundling.

Now, i have not included this gem in the Gemfile, so it's coming from some dependency. How can i figure out which gem is dependent on this couchbase gem?

现在，我没有将这个 gem 包含在Gemfile. 我如何确定哪个 gem 依赖于这个沙发底座 gem？

Since bundle installis failing and I don't have Gemfile.lockto figure out this dependency.

因为bundle install失败了，我不必Gemfile.lock弄清楚这种依赖性。

回答by zrl3dx

gem dependency(with no args) should show you all gems from current Gemfile with their dependencies.

gem dependency（没有参数）应该显示当前 Gemfile 中的所有 gems 及其依赖项。

Edit:

编辑：

You can also do gem dependency -R(or just depinsted of dependency) if you want to find out which gems use specific (or all) gems.

如果您想找出哪些 gem 使用特定（或所有） gem，您也可以这样做gem dependency -R（或只是dep插入dependency）。

For deeper dependencies I'd parse output (regex maybe?) of first gem dependencies, pick gem's names and call gem depon each of them, but that's just a loose idea.

对于更深层次的依赖，我会解析第一个 gem 依赖的输出（可能是正则表达式？），选择 gem 的名称并调用gem dep它们中的每一个，但这只是一个松散的想法。

回答by Paulo Fidalgo

You can also use bundlerto create a dependency graph.

您还可以使用bundler创建依赖关系图。

Install graphviz:

安装graphviz：

gem install ruby-graphviz

and then:

进而：

bundle viz

Here are an example of a newly created Rails app:

下面是一个新创建的 Rails 应用程序的示例：

You can also play with the options:

您还可以使用以下选项：

bundle help viz