From ef69a238681969531ebba5ceb69c6376d0f25c02 Mon Sep 17 00:00:00 2001
From: Corentin Kerisit <corentin.kerisit@gmail.com>
Date: Mon, 7 Mar 2016 18:53:34 +0100
Subject: [PATCH] Adds source filtering for SearchDsl

This is different from the Fields methods as ElasticSearch will return a _source with only the fields specified.
---
 lib/searchsearch.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/searchsearch.go b/lib/searchsearch.go
index c921ae5a..c7efd7f3 100644
--- a/lib/searchsearch.go
+++ b/lib/searchsearch.go
@@ -124,6 +124,10 @@ func (s *SearchDsl) Source(returnSource bool) *SearchDsl {
 	return s
 }
 
+func (s *SearchDsl) SourceFields(fields ...string) *SearchDsl {
+	s.args["_source"] = fields
+	return s
+}
 // Facet passes a Query expression to this search
 //
 //		qry := Search("github").Size("0").Facet(