lib/puppet/parser/relationship.rb in puppet-2.7.19 vs lib/puppet/parser/relationship.rb in puppet-2.7.20.rc1

@@ -52,9 +52,11 @@
     end
     unless target_resource = catalog.resource(target)
       raise ArgumentError, "Could not find resource '#{target}' for relationship from '#{source}'"
     end
     Puppet.debug "Adding relationship from #{source} to #{target} with '#{param_name}'"
-    source_resource[param_name] ||= []
+    if source_resource[param_name].class != Array
+      source_resource[param_name] = [source_resource[param_name]].compact
+    end
     source_resource[param_name] << target
   end
 end