Fix for eager loading of parent data in many to one relationship; where the pare…

…nt has a primary key specified.

lib/dao-factory.js

@@ -1075,7 +1075,10 @@ module.exports = (function() {
       if (include.hasOwnProperty('attributes')) {
         var primaryKeys;
         if (include.daoFactory.hasPrimaryKeys) {
-          primaryKeys = include.daoFactory.primaryKeys
+          primaryKeys = []
+          for (var field_name in include.daoFactory.primaryKeys) {
+            primaryKeys.push(field_name)
+          }
         } else {
           primaryKeys = ['id']
         }