app/assets/javascripts/backbone-nested-attributes/model.js in backbone-nested-attributes-0.2.3 vs app/assets/javascripts/backbone-nested-attributes/model.js in backbone-nested-attributes-0.3.0

@@ -33,26 +33,38 @@
   }
 
   function setNestedAttributeFor(model, relation, attributes) {
     var key           = relation.key,
         value         = attributes[key],
+        deletedValue  = attributes['deleted_' + key],
         currentValue  = model.get(key),
         nested        = currentValue || createNestedAttributeCollection(relation)
 
-    value = value instanceof Backbone.Collection ? value.slice() : value
+    value = valueOrSliceCollection(value)
 
     configureEventBubbling(model, nested, relation)
 
     if (value) {
       nested.set(value)
     }
 
+    if (deletedValue) {
+      delete attributes['deleted_' + key]
+
+      deletedValue = valueOrSliceCollection(deletedValue)
+      nested.deletedModels.set(deletedValue)
+    }
+
     attributes[key] = nested
 
     return attributes
   }
 
+  function valueOrSliceCollection(value) {
+    return value instanceof Backbone.Collection ? value.slice() : value
+  }
+
   function clearDeletedModelsFor(model) {
     _(model.relations).each(function (relation) {
       var collection = model.get(relation.key)
 
       collection.each(function (nestedModel) {
@@ -99,16 +111,24 @@
           value   = json[key],
           deleted = [],
           jsonValue
 
       if (value) {
-        if (options && options.nested) {
-          delete json[key]
-          key = key + '_attributes'
+        if (options) {
+          if (options.withDeleted) {
+            if (value.deletedModels) {
+              json['deleted_' + key] = value.deletedModels.toJSON(options)
+            }
+          }
 
-          if (value.deletedModels) {
-            deleted = value.deletedModels.toJSON(options)
+          if (options.nested) {
+            if (value.deletedModels) {
+              deleted = value.deletedModels.toJSON(options)
+            }
+
+            delete json[key]
+            key = key + '_attributes'
           }
         }
 
         jsonValue = value.toJSON(options)
 
@@ -128,18 +148,19 @@
         collection     = new CollectionType
 
     collection.model = _(relation).result('relatedModel') || collection.model
 
     collection.deletedModels = new Backbone.Collection
-    collection.on('remove', nestedModelRemoved, collection)
+    collection.deletedModels.model = collection.model
+    collection.on('remove', nestedModelRemoved)
 
     return collection
   }
 
-  function nestedModelRemoved(model) {
+  function nestedModelRemoved(model, collection) {
     if (!model.isNew()) {
       model.set({ _destroy: true })
-      this.deletedModels.add(model) // this refers to the collection
+      collection.deletedModels.add(model)
     }
   }
 
   function attributesFor(key, value, options) {
     var attributes
\ No newline at end of file