undefined method `xpath' for LibXML::XML

[seankibler]

Using Ruby 1.9.1
Using libxml-ruby 2.0.9

weather = NOAA.current_conditions_at_station("KCAK")
weather.weather_description

NoMethodError: undefined method `xpath' for #<LibXML::XML::Document:0x00000107379418>
    from /Users/skibler/Projects/newscloudcms/.bundle/ruby/1.9.1/gems/noaa-0.2.4/lib/noaa/current_conditions.rb:177:in `text_from_node'
    from /Users/skibler/Projects/newscloudcms/.bundle/ruby/1.9.1/gems/noaa-0.2.4/lib/noaa/current_conditions.rb:30:in `weather_description'
    from (irb):6
    from /Users/skibler/Projects/newscloudcms/.bundle/ruby/1.9.1/gems/railties-3.0.3/lib/rails/commands/console.rb:44:in `start'
    from /Users/skibler/Projects/newscloudcms/.bundle/ruby/1.9.1/gems/railties-3.0.3/lib/rails/commands/console.rb:8:in `start'
    from /Users/skibler/Projects/newscloudcms/.bundle/ruby/1.9.1/gems/railties-3.0.3/lib/rails/commands.rb:23:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

[jreidthompson]

$ ruby -v
ruby 1.8.7 (2011-02-18 patchlevel 334) [x86_64-linux]

$ ~/bin/oxfordWeatherAll.rb
/usr/local/lib64/ruby/gems/1.8/gems/noaa-0.2.4/lib/noaa/current_conditions.rb:177:in text_from_node': undefined methodxpath' for #LibXML::XML::Document:0x7f0026190de8 (NoMethodError)
from /usr/local/lib64/ruby/gems/1.8/gems/noaa-0.2.4/lib/noaa/current_conditions.rb:23:in `observed_at'
from /home/rthompso/bin/oxfordWeatherAll.rb:19

[jreidthompson]

$ gem list --local

*** LOCAL GEMS ***

andre-geokit (1.5.0)
atk (0.19.4)
cairo (1.10.0)
color (1.4.1)
columnize (0.3.4)
daemons (1.1.3)
echoe (4.3.1)
fastthread (1.0.7)
gdkpixbuf2 (0.19.4)
geokit (1.6.0)
gettext (2.1.0)
glib2 (0.19.4)
gnome2 (0.19.4)
gnomecanvas2 (0.19.4)
gruff (0.3.6)
gtk2 (0.19.4)
highline (1.6.1)
hoe (2.8.0)
httparty (0.8.1)
httpclient (2.2.1)
jeremymcanally-context (0.5.5)
jeremymcanally-matchy (0.1.0)
json (1.4.6)
libart2 (0.19.4)
libglade2 (0.19.4)
libxml-ruby (2.2.2)
linecache (0.46)
locale (2.0.5)
multi_json (1.0.3)
multi_xml (0.4.1)
net-http-digest_auth (1.1.1)
net-http-persistent (2.1)
net-scp (1.0.4)
net-sftp (2.0.5)
net-ssh (2.1.3)
noaa (0.2.4)
nokogiri (1.5.0)
outoftime-noaa (0.2.2)
pango (0.19.4)
pdf-writer (1.1.8)
rake (0.8.7)
rake-compiler (0.7.5)
rbx-require-relative (0.0.5)
rmagick (2.13.0)
ruby-debug (0.10.4)
ruby-debug-base (0.10.4)
ruby-net-ldap (0.0.4)
ruby-prof (0.10.7)
rubyforge (2.0.4)
rubygems-update (1.8.10 ruby)
RubyInline (3.8.6)
sqlite3-ruby (1.3.2)
syntax (1.0.0)
transaction-simple (1.4.0)
xml-simple (1.1.0)
ZenTest (4.4.2)

[jreidthompson]

fixed for my purposed by changing line 177 of current_conditions.rb from
#@doc.xpath("/current_observation/#{element_name}[1]/child::text()").first.to_s
to
@doc.find("/current_observation/#{element_name}[1]/child::text()").first.to_s

/usr/local/lib64/ruby/gems/1.8/gems/noaa-0.2.4/lib/noaa/current_conditions.rb:177:in text_from_node': undefined methodxpath' for #LibXML::XML::Document:0x7fe21411e8f8 (NoMethodError

[jreidthompson]

it appears that current_conditions.rb line 177
def text_from_node(element_name)
@doc.xpath("/current_observation/#{element_name}[1]/child::text()").first.to_s
end
should now read as
def text_from_node(element_name)
@doc.find("/current_observation/#{element_name}[1]/child::text()").first.to_s
end