Chef Ruby loop over attributes in an .erb template file

Question

So this might be a little confusing but bear with me. In short I want to loop over all attributes with a certain key value and then insert them into a template if the values ar

Answer 1

What you probably meant was:

<% node['elasticsearch']['default'].each do |key, value| -%>
    <% unless value.empty? -%>
        <%= key %>=<%= value %>
    <% end %>
<% end %>

When iterating over a Hash, you go over its key-value pairs. So for the first iteration, key will be 'ES_USER', and value will be '' (which is not nil...).

Next you check that the value is not blank?, and print out the key=value line.