Normalize the schema definition

lib/model-builder.js

@@ -103,6 +103,8 @@ ModelBuilder.prototype.define = function defineClass(className, properties, sett
     properties = properties || {};
     settings = settings || {};
 
+    buildSchema(className, properties);
+
     // every class can receive hash of data as optional param
     var ModelClass = function ModelConstructor(data, schema) {
         if (!(this instanceof ModelConstructor)) {
@@ -416,19 +418,21 @@ function buildSchema(name, properties, associations) {
         var type = getSchemaType(properties[p]);
         if (typeof type === 'string') {
             // console.log('Association: ' + type);
-            associations.push({
-                source: name,
-                target: type,
-                relation: Array.isArray(properties[p]) ? 'hasMany' : 'belongsTo',
-                as: p
-            });
-            delete properties[p];
+            if (Array.isArray(associations)) {
+                associations.push({
+                    source: name,
+                    target: type,
+                    relation: Array.isArray(properties[p]) ? 'hasMany' : 'belongsTo',
+                    as: p
+                });
+                delete properties[p];
+            }
         } else {
             var typeDef = {
                 type: type
             };
             delete properties[p].type;
-            for(var a in properties[p]) {
+            for (var a in properties[p]) {
                 typeDef[a] = properties[p][a];
             }
             properties[p] = typeDef;