ruby - How to reference a file from inside of a gem

Question

What's the correct way to find the absolute path to a file from within a gem? In other words, let's say I'm in gem_install_path/mygem/lib/mygem.rb, and I want the path to gem_install_path/mygem/foo/. What's the correct way to get that?

Answer 1

It is not clear which path you want, but probably one of the following will give you what you want:

Gem.loaded_specs["mygem"].base_dir
Gem.loaded_specs["mygem"].full_gem_path
Gem.loaded_specs["mygem"].gem_dir
Gem.loaded_specs["mygem"].gems_dir