Chef Template Nested Loops - erb

Question

I have a small problem with my chef cookbook, i'm trying todo a nested loop (loop in loop). I have a array with multiple levels and i would like to loop all levels in a chef template. Right now i'm down at the following:
Template:
<% #countries.each do |country| %>
<% #countries[#country].each do |key, val| %>
<Publication <%= #country #key #val %> />
<% end %>
<% end %>
Attribute:
default['countries']['IE'] = {'57'=>'val2','58'=>'val2','61'=>'val','63'=>'val'}
default['countries']['DE'] = {'110'=>'val2','113'=>'val2','115'=>'val2'}
default['countries']['BE'] = {'134'=>'val2','138'=>'val2','139'=>'val2'}
Recipe:
template "conf.xml" do
action :create
variables ({
:countries => node['countries']
})
end
So first i would like too loop the countries level, then loop each level in that array by using the key and val of the array. I hope someone can help me out with this one.
Best,
- Thijs

Answer 1

You can do something like this,
<% #countries.each do |country, country_details| -%>
<% country_details.to_hash.each do |value| -%>
<Publication <%= "#{country} #{value[0]} #{value[1]}" %> />
<% end -%>
<% end -%>
The country_details should ideally be a hash, however, Chef changes that to something called an ImmutableMash which needs to be converted to a Hash.
However, on conversion the value received after iteration is an array instead of a hash so needs to be written in the array format i.e. value[0] and value[1].
The above code returns the following output, not sure if you're looking for this,
<Publication IE 57 val2 />
<Publication IE 58 val2 />
<Publication IE 61 val />
<Publication IE 63 val />
<Publication DE 110 val2 />
<Publication DE 113 val2 />
<Publication DE 115 val2 />
<Publication BE 134 val2 />
<Publication BE 138 val2 />
<Publication BE 139 val2 />