This gem adds, for any attribute ending with _at, a developer-friendly helper methods that tells if the attribute's value is nil. Super simple, super convenient.

Let's say we are building a payment application with a Order model. At some point, we want to know if the order has been paid.

The first idea is usually to add a paid boolean column to the Order model.

Cool! But soon enough we realise we also want to know when the payment was made. We then add a second column named paid_at but it makes the first one a redundancy: if paid_at is not nil, then the payment as been made.

We then remove the paid column and add a helper that lets us know whether the payment happend or not:

def paid?
  !!paid_at
end

This gem does create this helper for you. That's it :)

Add this line to your application's Gemfile:

gem 'happened'

And then execute:

$ bundle

Or install it yourself as:

$ gem install happened

Given Order has two columns :paid_at and :payment_failed_at of type :datetime

class Order
  prepend Happened
end

You can now call two helper methods: :paid? and :payment_failed?

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/yoones/happened. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

The gem is available as open source under the terms of the MIT License.

Everyone interacting in the Happened project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.