Use Ruby Class In A Different Directory

Question

I have written a few ruby classes. However, when trying to access one from another directory I am getting the following error:

uninitialized constant Main::AppVersion

This is what the directory structure looks like:

home --> a --> app_version.rb
home --> b --> c --> lib --> main.rb (and other classes)

Everything within "lib" can see each other. However, when trying to access app_version, it fails. I added the path to app version (home/a) to the $LOAD_PATH. So it should be available from there. I have also tried "requiring" my other class, but when I do that I get the following error:

LoadError: no such file to load -- AppVersion

Any idea on what I could be doing wrong here would be highly appreciated. Thanks!

Answer 1

Can try using require_relative:

require_relative '../../../a/app_version'

Answer 2

You error is:

LoadError: no such file to load -- AppVersion

So require is looking for a file AppVersion.rb. And you said the file name is app_version.rb. Try to load it with:

require 'app_version'

after setting up the $LOAD_PATH.

Answer 3

When you define Main::AppVersion class it's supposed to reside in main folder (i.e. main/app_version.rb)

So it doesn't depend on $LOAD_PATH.

Answer 4

You will have to require the file.

LoadError: no such file to load -- AppVersion

Do you require "app_version" ? Or require "AppVersion"? (first one is correct, and consider to require_relative)

Another option is to run ruby and give the include path like

ruby -Ia -Ib/c/lib b/c/lib/main.rb

.