I’ve been working through the Flickr tutorial, and it looks like I
installed the Flickr gem with the require xml-simple gem without
problems. But when I got to the point in the demo when it was time to
submit the form, I got an error with the message “uninitialized constant
Flickr”.
I did some poking around at the gem repository, and ran ‘ruby
test_flickr.rb’ to test, and got the message:
./flickr.rb:49:in `require’: no such file to load – xmlsimple
(LoadError). This is of course the place in flickr.rb where “require
‘xmlsimple’” is called. Ran a similar test in a test.rb file that
simply says “require ‘xmlsimple’”, and it chokes in a similar fashion.
The system says I have xml-simple installed (running gem q -l). I’ve
tried uninstalling and reinstalling both xml-simple and flickr,
independendtly and by letting flickr grab xml-simple. I’ve restarted the
server entirely. Things always install without error, and gem always
tells me I’ve got xml-simple installed, but when it comes time to
require xmlsimple, it can’t be found. I’m tearing my hair out.
I’ve got xml-simple 1.0.8, Ruby 1.8.4, RubyGems 0.8.11, running on an
old Suse 8 box. Haven’t had any problems running or installing anything
Ruby-on-Rails related so far.
Final comment - I just installed Ruby/Gems/Rails on my WinXP laptop and
I’m getting the exact same results. Everything seemed to install
without error. I can run a basic app. I install the Flickr gem, which
also grabs xml-simple. The system says they’re installed. Go to run
‘ruby require flickr’ and bam - can’t be found. Gem_path seems to point
to the correct repository.
Is there a version incompatibility somewhere? Both systems (Linux and
Windows) are running Ruby 1.8.4, Gems 1.8, Rails 1.1, flickr gem 1.0.0,
xml-simple 1.0.8 (though I tried to grab the Technorati gem, which
installed, and the system couldn’t find that either.
I was really looking forward to teaching myself RoR with a demo app I
have in mind, but I’m close to giving up.
The gem path seems to be correct. I tried additionally adding a similar
$GEM_HOME to my local environment. I have “export RUBYOPT=rubygems” in
my .profile. Gems install without error and show that they’re installed
on the server. I’m using the mysql gem to connect to the database
without problem. But when I run something at the command line like ‘ruby
require flickr’, I get “No such file or directory – require
(LoadError)”.
Aside from wanting to muck around with the simple Flickr demo, I’d
really like to figure out what’s up with my system so I can use the
extra libraries.
Try running ruby -e “require ‘flickr’” and see if that works. Just
running ruby require flickr will try to execute a script called
require, which obviously isn’t what you’re trying to achieve.