Container-agnostic constructor injection mixin
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spec Set dependency ivars before call to super in generated #initialize Mar 26, 2018
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dry-auto_inject Join the chat at

Gem Version Build Status Code Climate Test Coverage Inline docs No monkey-patches

A simple extension which allows you to automatically inject dependencies to your object constructors from a configured container.

It does 3 things:

  • Defines a constructor which accepts dependencies
  • Defines attribute readers for dependencies
  • Injects dependencies automatically to the constructor with overridden .new


Add this line to your application's Gemfile:

gem 'dry-auto_inject'

And then execute:

$ bundle

Or install it yourself as:

$ gem install dry-auto_inject



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


Bug reports and pull requests are welcome on GitHub at