Thanks so much.  This has been a real help to me.

Jon


>>
> Not for this application, it is not using Bundler (you can tell a Ruby
> program is using Bundler because it will have a file at the root of the app
> named Gemfile). The easiest thing to do is probably to guess at what version
> of ActiveRecord it needs and install that. If you find yourself doing this a
> lot, then it is probably worth it to add Bundler to the project. I'd try
> matching the date of the article up against versions at
> https://rubygems.org/gems/activerecord/versions then install that particular
> version of ActiveRecord with `$ gem install activerecord -v x.x.x` If you
> have newer versions of ActiveRecord installed, then you may need to add `gem
> 'activerecord', '=x.x.x'` to the code to force it to load the version you
> want (if this process is as eyebrow raising to you as it is to me, then you
> see why Bundler was created).
>