Require Nokogiri? No such file to load

Question

I'm trying to get started with using Nokogiri. I ran the command

gem install nokogiri

as an administrator in Windows 7 (64-Bit). The console said "successfully installed" and "1 gem installed".

When I type in

gem list --local OR gem q --local

I see Nokogiri on the list of "Local Gems".

However, when I try to use it via the require statement (in NetBeans), I get an error that there is "no such file to load".

What am I doing wrong? I'm not a Ruby professional. This is also the first gem I've installed. Please dumb it down for me.

Netbeans comes with built in ruby - jRuby. Wich version is used in project's properties - yours or built-in? — Viacheslav Molokov, Mar 31 '11 at 06:37
Yes Viacheslav, you are correct! I was using JRuby by accident. I have corrected the problem. Thank you! — Derek, Mar 31 '11 at 06:38

score 20 · Answer 1 · answered Mar 31 '11 at 06:30

20

With Ruby 1.8, you have to require 'rubygems' before requiring any libraries installed as gems. With Ruby 1.9, that is not necessary anymore.

require 'rubygems'
require 'nokogiri'
...

answered Mar 31 '11 at 06:30

Martin Vidner

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Thanks for the tip. I have tried using your suggestion, and it does not work. However, I do have Ruby 1.9 anyway. – Derek Mar 31 '11 at 06:33
Oh, I have figured out the problem! NetBeans was using JRuby 1.5 instead of 1.9. Thank you for pointing out versions, or I would not have checked this! – Derek Mar 31 '11 at 06:37

score 10 · Answer 2 · edited Dec 13 '11 at 23:58

10

I realize this post is pretty old, but others may stumble here with the same problem, as I did. Novices like me may not realize that

require 'rubygems'

must precede

require 'nokogiri'

At least, based on another URL post that gave me the idea, the addition of that line solved the problem for me with nokogiri.

edited Dec 13 '11 at 23:58

Wayne

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answered Oct 28 '11 at 14:42

Sid

101
1
2

score 4 · Accepted Answer · answered Mar 31 '11 at 06:53

4

Netbeans comes with built-in jRuby.

You can specify or check wich version of ruby currently used in your project in project's properties (higlighted section).

enter image description here

answered Mar 31 '11 at 06:53

Viacheslav Molokov

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A picture is worth a thousand words. Thanks, Viacheslav! – Derek Mar 31 '11 at 07:05

James McGuigan · Answer 4 · 2014-01-10T07:59:12.910

I was struggling with this one for a while, having upgraded to ruby 2.0.

The fix was to install nokigiri using apt-get

apt-get install ruby-nokogiri

As a side note dependencies can be seen using

$ gem dependency nokogiri

Gem nokogiri-1.6.1
  hoe (~> 3.7, development)
  hoe-bundler (>= 1.1, development)
  hoe-debugging (>= 1.0.3, development)
  hoe-gemspec (>= 1.0, development)
  hoe-git (>= 1.4, development)
  mini_portile (~> 0.5.0)
  minitest (~> 2.2.2, development)
  racc (>= 1.4.6, development)
  rake (>= 0.9, development)
  rake-compiler (~> 0.8.0, development)
  rdoc (~> 4.0, development)
  rexical (>= 1.0.5, development)

Require Nokogiri? No such file to load

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