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Add more gem docs in Rails Application Templates guide 

Added doc on how to add a gem with a specific version. Added doc on how to add a comment.
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William Estoque 2024-04-25 17:43:49 +08:00
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guides/source/rails_application_templates.md
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@ -62,6 +62,18 @@ gem "nokogiri"
Note that this method only adds the gem to the `Gemfile`; it does not install the gem.
You can also specify an exact version:
```ruby
gem "nokogiri", "~> 1.16.4"
```
And you can also add comments that will be added to the `Gemfile`:
```ruby
gem "nokogiri", "~> 1.16.4", comment: "Add the nokogiri gem for XML parsing"
```
### gem_group(*names, &block)
Wraps gem entries inside a group.