Barcode-generator -matsimitsu - NoMethodError

I’m using Matsimitsu’s Barcode Generator:

and have installed: gbarcode (0.98.16), rmagick (2.12.2) and have
installed the files to: Vendor/Plugins/ directory and successfully ran
the rake barcode_setup command to create the public/images/barcodes
dir.

I Tried using the sample code: <%= barcode ‘FJJ4JD’%> in one of my
html.erb files, with the returned message:


NoMethodError in Inventories#show
undefined method `barcode’ for #ActionView::Base:0x105bb8838
Extracted source (around line #41):

38: <%=h @inventory.campus %>
39:


40:
41: <%= barcode ‘TEST1234’%>
42:
43:
44: <%= link_to ‘Edit’, edit_inventory_path(@inventory) %> |
RAILS_ROOT: /Users/justinz/barcode

Application Trace | Framework Trace | Full Trace
app/views/inventories/show.html.erb:41:in
_run_erb_47app47views47inventories47show46html46erb' app/controllers/inventories_controller.rb:26:inshow’


Did I install this incorrectly? Am I using this incorrectly?

Any help would be GREATLY Appreciated

Thank you in advance Google Ruby on Rails Talk Folks!

JZ