From 3caf0ba92313c71d722b30f77c5c1355601fc7c1 Mon Sep 17 00:00:00 2001
From: Eugen Rochko <eugen@zeonfederated.com>
Date: Wed, 27 Sep 2017 04:14:03 +0200
Subject: [PATCH] Fix empty query sent to postgres for custom emojis (#5121)

---
 app/models/custom_emoji.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/app/models/custom_emoji.rb b/app/models/custom_emoji.rb
index aff9f8dfa3f..e80c581553c 100644
--- a/app/models/custom_emoji.rb
+++ b/app/models/custom_emoji.rb
@@ -33,7 +33,11 @@ class CustomEmoji < ApplicationRecord
   class << self
     def from_text(text, domain)
       return [] if text.blank?
-      shortcodes = text.scan(SCAN_RE).map(&:first)
+
+      shortcodes = text.scan(SCAN_RE).map(&:first).uniq
+
+      return [] if shortcodes.empty?
+
       where(shortcode: shortcodes, domain: domain)
     end
   end