Скачать или смотреть How to Install the git head of a Gem through RubyGems.org?

Discover the steps to install the latest commit of a Ruby gem directly from a GitHub repository without using Bundler, and learn more about RubyGems capabilities.
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How to Install the git head of a Gem through RubyGems.org?

If you're a Ruby on Rails developer, you may have found yourself wanting to install the latest version of a gem — perhaps even the latest commit from its GitHub repository. This can be especially relevant when you want to experiment with cutting-edge features or need certain bug fixes that haven't yet made it to a stable release. However, the question remains: How can you install the git head of a gem through RubyGems.org? Let's explore the answer.

Understanding the Limits of RubyGems

To put it simply, RubyGems.org is a repository for published gems. This means that you are only able to install versions of gems that have been officially pushed to the RubyGems repository. Consequently, if the gem's owner has not uploaded the latest commit or version to RubyGems, you will not be able to install it directly from there. For instance, if you're attempting to use Rails with its master branch, you might be looking for versions like 6.1.0-alpha, which wouldn't be available unless published.

Confirming Available Versions of Rails

You can quickly check which versions of Rails are currently available on RubyGems.org as shown below:

[[See Video to Reveal this Text or Code Snippet]]

This command reveals all pre-release versions available, making it clear that the latest development versions may not be published yet.

The Alternative: Using Bundler

While RubyGems doesn’t provide a direct way to install unpublished gems, Bundler does allow this functionality seamlessly. If you want to install Rails from the GitHub repository instead of RubyGems, you can do so using the following command in your Gemfile:

[[See Video to Reveal this Text or Code Snippet]]

Why Use Bundler?

Using Bundler for this purpose has several advantages:

Easy Management: Bundler simplifies managing dependencies for your Ruby applications.

Direct Access to Latest Features: You can specify branches or commits directly, ensuring you’re using the latest code.

Local Development: It’s excellent for local development and testing, allowing you to work with features before they are officially released.

Important Note

Bear in mind that gems installed directly from a Git repository via Bundler will not show up in your typical gem list when using the gem list command. This is a unique feature of Bundler, distinguishing it from standard RubyGems use.

Conclusion

While you cannot install unpublished gems directly from RubyGems.org, using Bundler provides a powerful workaround. By specifying a GitHub repository in your Gemfile, you gain access to the latest commits, making it easier to explore new features and fixes for your projects.

In summary, if you're looking to experiment with the latest version of a gem, turn to Bundler. Happy coding!