From: Walton Hoops <me@...>
Date: 2010-12-14T03:23:30+09:00
Subject: Re: require - not loading gem

On 12/13/2010 5:55 AM, paul h wrote:
> Hi,
>
> I have installed the spreadsheet gem to read and write MS Excel files.
>
> I have a problem in that when I run the app from the command line I
> get the error: unable to load spreadsheet
>
> However, when I run my Cuke features and RSpec tests, the gem is
> loaded up fine, and xls files are read and written as intended - it is
> only a problem when I run the app directly from the command line.
>
> I presume this is a problem with my ruby installation, or environment.
> I have looked through the Pickaxe book ref Environment, but culdn't
> find anything to help - and I can't find anything on the site for the
> gem in respect of any support, so if someone could point me in the
> right direction, I'd be eternally grateful.
>
> Ubuntu 10.04
> Ruby 1.8.7

You must manually require rubygems in 1.8.x.  In 1.9.x this is no longer 
necessary.  Either add require 'rubygems' before require 'spreadsheet' 
or run the program with ruby -r rubygems.

I suspect the reason it works from rspec/cucumber is because there are 
themselves gems and must require rubygems to operate.

> App structure:
>
> [application root folder]
>      [bin]
>          application (chmod +x)
>      [lib]
>          application.rb (all require statements in here)
>          [application]
>              ...
>              modules
>          [features]
>              ...
>              cuke feature files
>          [spec]
>              ...
>              RSpec spec files
>
> If anyone can help I'd appreciate it. At the moment, I can only run
> the app via Cucumber or RSpec, and I need to run it directly from the
> command line.
>
> Thanks
>
> Paul
>