How to run a ruby script within bundler context?

Question

I have a Ruby script called foo.rb, and I want to run it within the context of the bundler environment. How?

bundle exec foo.rb doesn\'t work, because exec

Answer 1

For instance, I wanted to use the same version of Rubocop as my Rails app and not the latest system one, so doing this in a script:

require 'bundler'
Bundler.require

# ...

Allowed me to use my app's version of rubocop.