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Ruby

Jin He
Jin He
8,123 Points

How to use require to load a external gem in a normal ruby file

Suppose I have create a normal ruby file hello.rb, I want to require activerecord in my file, and use require 'activerecord', but this doesn't work, /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- activerecord (LoadError)

how am I gonna fix that ?

After some Googling, the only possible answer I could come up with is that Ruby is looking in the wrong place for gems, possibly because you're using a newer version. I'm not even remotely sure, sadly.

Maybe Jason Seifer will come along and know the answer, but for now I'll keep looking :)

Good Luck!

1 Answer

Jason Seifer
STAFF
Jason Seifer
Treehouse Guest Teacher

Hi Jin He! I'm going to assume you have activerecord installed as a gem. In that case, you would do the following:

gem 'activerecord'
require 'active_record'

There are some more steps involved with getting active record itself to work but those are the basic steps to take for using a gem.