Merge pull request #95 from dombesz/master

Bug on initializing models with empty number property on postgresql.

lib/abstract-class.js

@@ -606,7 +606,7 @@ AbstractClass.prototype.updateAttributes = function updateAttributes(data, cb) {
     inst.isValid(function (valid) {
         if (!valid) {
             if (cb) {
-                cb(new Error('Validation error'));
+                cb(new Error('Validation error'), inst);
             }
         } else {
             update();

lib/adapters/postgres.js

@@ -164,7 +164,18 @@ PG.prototype.toDatabase = function (prop, val) {
             return this.toDatabase(prop, val[0]) + ' AND ' + this.toDatabase(prop, val[1]);
         }
     }
-    if (prop.type.name === 'Number') return val;
+    if (prop.type.name === 'Number') {
+      if (!val && val!=0) {
+          if( prop.autoIncrement ) {
+              return 'DEFAULT';
+          }
+          else {
+              return 'NULL';
+          }
+      }
+      return val
+    };
+
     if (prop.type.name === 'Date') {
         if (!val) {
             if( prop.autoIncrement ) {