Allow preValidate to work with dependent properties

thedersen · Jul 29, 2014 · f095b48 · f095b48
1 parent 08d01da
commit f095b48
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/src/backbone-validation.js b/src/backbone-validation.js
@@ -183,13 +183,18 @@ Backbone.Validation = (function(_){
               error;
 
           if(_.isObject(attr)){
-            _.each(attr, function(value, key) {
+              var oldAttr = this.attributes;
+              _.extend(this.attributes, attr);
+
+              _.each(attr, function(value, key) {
               error = self.preValidate(key, value);
               if(error){
                 result[key] = error;
               }
             });
 
+            this.attributes = oldAttr;
+
             return _.isEmpty(result) ? undefined : result;
           }
           else {