app/assets/javascripts/backbone-nested-attributes/model.js in backbone-nested-attributes-0.4.2 vs app/assets/javascripts/backbone-nested-attributes/model.js in backbone-nested-attributes-0.4.3

@@ -1,11 +1,9 @@
 (function(Backbone, _) {
   var BackboneModelPrototype = Backbone.Model.prototype
 
-  function setNestedAttributes(model, key, value, options) {
-    var attributes = attributesFor(key, value, options)
-
+  function setNestedAttributes(model, attributes) {
     if (attributes) {
       _(model.relations).each(function (relation) {
         if (relation.type == 'one') {
           setHasOneNestedAttributeFor(model, relation, attributes)
         } else {
@@ -183,11 +181,22 @@
     return attributes
   }
 
   Backbone.NestedAttributesModel = Backbone.Model.extend({
     set: function (key, value, options) {
-      var attributes = setNestedAttributes(this, key, value, options)
-      return BackboneModelPrototype.set.call(this, attributes, options)
+      var attributes
+
+      // Duplicate backbone's behavior to allow separate key/value parameters,
+      // instead of a single 'attributes' object.
+      if (_.isObject(key) || key == null) {
+        attributes = key
+        options = value
+      } else {
+        attributes = {}
+        attributes[key] = value
+      }
+
+      return BackboneModelPrototype.set.call(this, setNestedAttributes(this, attributes), options)
     },
 
     toJSON: function (options) {
       return nestedToJson(BackboneModelPrototype.toJSON.apply(this, arguments), this.relations, options)
     },