From 8b490b9b94511e85dd37ab655d5ccead71ba6a4e Mon Sep 17 00:00:00 2001
From: syuilo <syuilotan@yahoo.co.jp>
Date: Wed, 5 Sep 2018 16:48:59 +0900
Subject: [PATCH] #2607

---
 src/db/elasticsearch.ts | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/db/elasticsearch.ts b/src/db/elasticsearch.ts
index 4acff4079..ee5769d1d 100644
--- a/src/db/elasticsearch.ts
+++ b/src/db/elasticsearch.ts
@@ -4,6 +4,12 @@ import config from '../config';
 const index = {
 	settings: {
 		analysis: {
+			normalizer: {
+				lowercase_normalizer: {
+					type: 'custom',
+					filter: ['lowercase']
+				}
+			},
 			analyzer: {
 				bigram: {
 					tokenizer: 'bigram_tokenizer'
@@ -24,7 +30,8 @@ const index = {
 				text: {
 					type: 'text',
 					index: true,
-					analyzer: 'bigram'
+					analyzer: 'bigram',
+					normalizer: 'lowercase_normalizer'
 				}
 			}
 		}