From e72541da61b36fc2644c304f1c19161fe31d9ac7 Mon Sep 17 00:00:00 2001
From: Richard Stewart <richardstewart0213@gmail.com>
Date: Wed, 11 Dec 2013 11:53:13 +0100
Subject: [PATCH] [MODEL] Updated the Mongoid example in the README to include
 `as_indexed_json` method

Default Mongoid serialization keeps the `_id` property in the JSON as "BSON Object",
which breaks Elasticsearch.

See:

* https://github.com/elasticsearch/elasticsearch/issues/3517
* https://github.com/rails-api/active_model_serializers/issues/354#issuecomment-26805414
---
 elasticsearch-model/README.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/elasticsearch-model/README.md b/elasticsearch-model/README.md
index 19343e4..4498253 100644
--- a/elasticsearch-model/README.md
+++ b/elasticsearch-model/README.md
@@ -535,6 +535,10 @@ class Article
   attr_accessible :id, :title, :published_at
 
   include Elasticsearch::Model
+
+  def as_indexed_json(options={})
+    as_json(except: [:id, :_id])
+  end
 end
 
 Article.create id: '1', title: 'Quick brown fox'