Allow EmbeddedRecords error to be applied recursively

packages/ember-data/lib/serializers/embedded-records-mixin.js

@@ -1,5 +1,6 @@
 var get = Ember.get;
 var forEach = Ember.EnumerableUtils.forEach;
+var isArray = Ember.isArray;
 var camelize = Ember.String.camelize;
 
 /**
@@ -345,6 +346,36 @@ var EmbeddedRecordsMixin = Ember.Mixin.create({
     }
   },
 
+  /**
+    Normalize embedded records errors
+    @method normalizeRelationshipErrors
+    @private
+  */
+  normalizeRelationshipErrors: function(typeClass, hash) {
+    if (!this.keyForRelationship) {
+      return;
+    }
+    this._super(typeClass, hash);
+
+    var store = this.get('store');
+    typeClass.eachRelationship(function(key, relationship) {
+      if (!hash || !hash[key] || !this.hasSerializeRecordsOption(key)) {
+        return;
+      }
+
+      var relationshipSerializer = store.serializerFor(relationship.type);
+      if (relationship.kind === 'hasMany' && isArray(hash[key])) {
+        forEach(hash[key], function(hash) {
+          if (hash) {
+            relationshipSerializer.normalizeErrors(relationship.type, hash);
+          }
+        });
+      } else {
+        relationshipSerializer.normalizeErrors(relationship.type, hash[key]);
+      }
+    }, this);
+  },
+
   // checks config for attrs option to embedded (always) - serialize and deserialize
   hasEmbeddedAlwaysOption: function (attr) {
     var option = this.attrsOption(attr);