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It's not exactly done this way yet because Anyhub didn't have an API at first - so I created the first version without the Account class, so it might not be exactly like this at the Github repo. Rake configuration for your project.

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It is here you can define rake tasks, and configure your project in terms of the name of it, dependencies, description and similar. The Readme file for your project. If you create a Github repo. It is also "the index" for your Gems' documentation. Remember a few lines ago, I told you how you could configure your Gem via Rakefile? As you might have already guessed, we're going to open that very file now, to configure our example Gem.

After rubygems and rake has been required by Rakefile we see some fancy code, and then something which looks like some configuration.

40 Best Ruby Gems That We Use

This is indeed where we configure our example Gem. You mostly only need to configure the summary and description the first time, I did it like this:. If your gem has any dependencies, you can add them here. Dependencies in this context mean "gems which my gem depends on". You should add them, because if you do they are automatically installed along with your Gem whenever somebody tries to install your Gem.

If you don't, they'll just get a good ton of errors when they try using your gem. Now it's time to add some code to our helloworld Gem. So HelloWorld. Great, so far, so good. In order to finish our Gem, we need a version file.

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Now because Jeweler is so awesome, we don't even need to use our editor to do this, simply execute the following command:. But that seems correct. This is our first Gem build, so of course, the version is 0.

But first, why?

Note : If you are not using Ruby 1. Awesome, it works. I hope this has helped you towards creating your first gem. You are welcome to leave a comment, or contact me if you run into any trouble. To do so, you will need to register with Travis and select a public repo to build. Here you can see a sample Travis configuration. Finally, there is one last thing to do… Push the gem! This is done with with two simple commands:.

Basic structure of a Gem

Have fun creating amazing new gems and share them with us! Toggle navigation. Rakefile sounds familiar as well.

Aaaaand finally the creating a gem. As you can see, your code goes there ;. There is a strict convention in regards to the gem versioning system. If you want to push your gem out to the world, you need to keep track of the changes you make. Incrementing either of those 3 numbers means a different type of change has occurred in the gems implementation. Continuous integration Everybody likes continuous integration , right?

As I mentioned in the first section, RubyGems will install the gem in your app and give you access to the classes in your gem. Now that you have some awesome code, you will want to create a gem so you can use this awesome code in another Ruby program. Rubygems has a command line interface that allows you to create a gem.

Fire off this command inside the root directory of your gem:. This command will build the gem and output a gem file that will include the version number in the file name. You should see the following output and some warnings about missing attributes:. So you decide to move on and install this gem on your system. Notice that the gem file was created in your current directory. Now that you have a gem file, you can use RubyGems to install the gem on your computer.

Typically you install gems from external sources, but you are not restricted to that. If you have access to the gem file, you can install it locally by specifying the location of the gem file that will be installed. Ah Yeah! You just created a gem! The gem is now installed on your system and ready to be used in another Ruby program. Create a new Ruby file that will be used to test out our gem.

Then you just call the class method from your namespaced class.

Make your own gem - RubyGems Guides

Here is the code:. Now you can run the Ruby program and test out your newly created gem and see how awesome you are. Fire it up via the command line:. Congratulations, you just used your new gem in a program! Now you can move on to bigger and better things.

While this tutorial was fairly simple and only covered the basics of creating a gem, I think it is still very important information for those that are new to gem development.