Rails Engine - Gems dependencies, how to load them into the application?

Question

I\'m doing an engine here, it works alright in stand alone.

When I transform it into a gem, and load it inside another application, I get a lot of undefined errors,

Answer 1

You must add the gem file to both the .gemspec file, and your engine.rb file. In the .gemspec file it would be like: s.add_dependency "kaminari", "0.16.1"

In the engine.rb file at the top add: require "kaminari"

I think you also need to add the gem to the rails engine Gemfile and bundle install, but I'm not certain if you need it there.