How do I use a Ruby gem on my Rails site?

Question

I'm working on a Rails web site (https://github.com/jhsu802701/dvi) called Doppler Value Investing that uses my very first Ruby gem (dvi_scraper, source code at https://github.com/jhsu802701/dvi_scraper). dvi_scraper downloads and processes financial statements from publicly traded companies, and dvi shows the results. The results are saved in a Postgres database and in a *.csv file.

I added dvi_scraper to the Gemfile for my Rails app, and I used "bundle install" to install it. However, the scripts and files from dvi_scraper DO NOT show up in the dvi directory where I'm working on my Rails site. Instead, they're all at /home/(my username)/.rvm/gems/ruby-2.0.0-p195/gems/dvi_scraper-0.0.0 . And the Dvi_scraper.dopeler command doesn't work in my dvi app.

What do I need to do to get the files from dvi_scraper to show up in my dvi app? As you might guess, I don't really understand how RubyGems and Gemfile work even though I've used them.

do you check out running `bundle exec YOURBINARY`? do you use rvm or rbenv? — phoet, Jun 19 '13 at 21:59
Your gems are downloading to the correct place. Why do you need them in your Rails path? — Matt Huggins, Jun 19 '13 at 22:33
Are you trying to have files in a proper place (from your gem) inside your rails app? (and if so, why?) — Jesse Wolgamott, Jun 19 '13 at 22:48

score 0 · Answer 1 · answered Jun 20 '13 at 00:51

0

This is the expected behavior. The gem files are automatically included (typically) when added via the Gemfile.

From the console

rails console

Try running

require_or_load 'dvi_scraper'

This should return true if the gem is properly installed

answered Jun 20 '13 at 00:51

brewp

172
3

How do I use a Ruby gem on my Rails site?

1 Answers1