Handle array values in join_keys_to_values function

1 files changed, 12 insertions, 3 deletions

diff --git a/lib/puppet/parser/functions/join_keys_to_values.rb b/lib/puppet/parser/functions/join_keys_to_values.rb
index e9924fe..e3baf9f 100644
--- a/lib/puppet/parser/functions/join_keys_to_values.rb
+++ b/lib/puppet/parser/functions/join_keys_to_values.rb
@@ -5,7 +5,8 @@
 module Puppet::Parser::Functions
   newfunction(:join_keys_to_values, :type => :rvalue, :doc => <<-EOS
 This function joins each key of a hash to that key's corresponding value with a
-separator. Keys and values are cast to strings. The return value is an array in
+separator. Keys are cast to strings. If values are arrays, multiple keys
+are added for each element. The return value is an array in
 which each element is one joined key/value pair.
 
 *Examples:*
@@ -13,6 +14,10 @@ which each element is one joined key/value pair.
     join_keys_to_values({'a'=>1,'b'=>2}, " is ")
 
 Would result in: ["a is 1","b is 2"]
+
+    join_keys_to_values({'a'=>1,'b'=>[2,3]}, " is ")
+
+Would result in: ["a is 1","b is 2","b is 3"]
     EOS
   ) do |arguments|
 
@@ -38,8 +43,12 @@ Would result in: ["a is 1","b is 2"]
 
     # Join the keys to their values.
     hash.map do |k,v|
-      String(k) + separator + String(v)
-    end
+      if v.is_a?(Array)
+        v.map { |va| String(k) + separator + String(va) }
+      else
+        String(k) + separator + String(v)
+      end
+    end.flatten
 
   end
 end