split updateAttributes into setAttributes and updateAttributes where the latter saves given updates

lib/dao.js

@@ -164,6 +164,11 @@ module.exports = (function() {
 
 
   DAO.prototype.updateAttributes = function(updates) {
+    this.setAttributes(updates)
+    return this.save()
+  }
+
+  DAO.prototype.setAttributes = function(updates) {
     var self = this
 
     var readOnlyAttributes = Utils._.keys(this.__factory.primaryKeys)
@@ -180,8 +185,6 @@ module.exports = (function() {
       )
       updateAllowed && (self[attr] = value)
     })
-
-    return this.save()
   }
 
   DAO.prototype.destroy = function() {