From 79e44042bc08cf69274008e408cac912ae693afe Mon Sep 17 00:00:00 2001
From: Ivan Tashkinov <ivantashkinov@gmail.com>
Date: Fri, 18 Jan 2019 10:57:42 +0300
Subject: [PATCH] [#477] User trigram index adjustment.

---
 lib/pleroma/user.ex                                 |  2 +-
 .../20190118074940_fix_user_trigram_index.exs       | 13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)
 create mode 100644 priv/repo/migrations/20190118074940_fix_user_trigram_index.exs

diff --git a/lib/pleroma/user.ex b/lib/pleroma/user.ex
index 1d0bf1edf..eb4218ebe 100644
--- a/lib/pleroma/user.ex
+++ b/lib/pleroma/user.ex
@@ -744,7 +744,7 @@ defp trigram_search_subquery(query) do
       select_merge: %{
         search_rank:
           fragment(
-            "similarity(?, ? || ' ' || coalesce(?, ''))",
+            "similarity(?, trim(? || ' ' || coalesce(?, '')))",
             ^query,
             u.nickname,
             u.name
diff --git a/priv/repo/migrations/20190118074940_fix_user_trigram_index.exs b/priv/repo/migrations/20190118074940_fix_user_trigram_index.exs
new file mode 100644
index 000000000..4f7712eb0
--- /dev/null
+++ b/priv/repo/migrations/20190118074940_fix_user_trigram_index.exs
@@ -0,0 +1,13 @@
+defmodule Pleroma.Repo.Migrations.FixUserTrigramIndex do
+  use Ecto.Migration
+
+  def up do
+    drop_if_exists index(:users, [], name: :users_trigram_index)
+    create index(:users, ["(trim(nickname || ' ' || name)) gist_trgm_ops"], name: :users_trigram_index, using: :gist)
+  end
+
+  def down do
+    drop_if_exists index(:users, [], name: :users_trigram_index)
+    create index(:users, ["(nickname || name) gist_trgm_ops"], name: :users_trigram_index, using: :gist)
+  end
+end