[chef] node attribute is there, but getting NoMethodError

hi. i can't figure out what's going wrong here. i'm hoping it's
something silly that i'm overlooking. my yumrepo recipe to distribute
a repo file errors out with NoMethodError. within the yum_repository
block, it tries to act on an attribute that should be there, but it's
failing.

can anyone help me figure out what's going wrong? details below.

thanks!
kallen


chef-server: ubuntu, 0.10.8-1
chef-client: centos, 0.10.8-3 (full stack)

the relevant block in the recipe:

 16 yum_repository "moog_os_baseline" do
 17   description "CentOS updates controlled by Moog, baseline"
 18   url node['repo']['moog_os_baseline']['url']
 19   action :add
 20   if not node['repo']['moog_os_baseline']
 21   #if node['repo']['moog_os_baseline'] == "false"
 22     Chef::Log.debug("HIGGS-BOSON: disabling repo moog_os_baseline")
 23     enabled 0
 24   else
 25     Chef::Log.debug("HIGGS-BOSON: enabling repo moog_os_baseline")
 26   end
 27 end


the line in yumrepo/attributes/moog-os-updates-centos.rb that sets the attr:

default['repo']['moog_os_baseline']['url'] = 
"http://mrepo.dev.moog.com/mrepo/#{node['platform']}#{node['platform_version'].split('.')[0]}-$basearch/RPMS.updates_baseline/"


the error during chef-client run:

[Wed, 04 Apr 2012 17:46:43 +0000] DEBUG: Found recipe moog-os-updates-centos 
in cookbook yumrepo
[Wed, 04 Apr 2012 17:46:43 +0000] ERROR: Running exception handlers
[Wed, 04 Apr 2012 17:46:43 +0000] FATAL: Saving node information to 
/var/cache/chef/failed-run-data.json
[Wed, 04 Apr 2012 17:46:43 +0000] ERROR: Exception handlers complete
[Wed, 04 Apr 2012 17:46:43 +0000] DEBUG: Re-raising exception: NoMethodError 
- undefined method `[]' for false:FalseClass
/var/cache/chef/cookbooks/yumrepo/recipes/moog-os-updates-centos.rb:18:in 
`block in from_file'
  
/opt/opscode/embedded/lib/ruby/gems/1.9.1/gems/chef-0.10.8/lib/chef/mixin/recipe_definition_dsl_core.rb:69:in
 `instance_eval'
  
/opt/opscode/embedded/lib/ruby/gems/1.9.1/gems/chef-0.10.8/lib/chef/mixin/recipe_definition_dsl_core.rb:69:in
 `method_missing'
  /var/cache/chef/cookbooks/yumrepo/recipes/moog-os-updates-centos.rb:16:in 
`from_file'



a view of the node attribute ... it's there, right? it's set as a default
attr.

[chef-repo]$ knife node show test-kallen.dev.moog.com -Fj -l | grep -A 1 
moog_os_baseline
      "moog_os_baseline": {
        "url": 
"http://mrepo.dev.moog.com/mrepo/centos5-$basearch/RPMS.updates_baseline/";
--
      "moog_os_baseline": false,
      "moog_os_test": true,