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