From c48956be102e9e4776d4d63572926c78b2c8dd8a Mon Sep 17 00:00:00 2001
From: Du Peng <gnepud@gmail.com>
Date: Wed, 19 Oct 2022 11:38:17 +0200
Subject: [PATCH] (bug) unable apply a coupon if this coupon has used by an
 user removed

---
 CHANGELOG.md         | 2 ++
 app/models/coupon.rb | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 003d95d30..8a148ba52 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog Fab-manager
 
+- Fix a bug: unable apply a coupon if this coupon has used by an user removed
+
 ## v5.4.24 2022 October 14
 
 - Fix a bug: unable debit hours of prepaid pack after a reservation of machine
diff --git a/app/models/coupon.rb b/app/models/coupon.rb
index 744ad35ba..ec7ef910d 100644
--- a/app/models/coupon.rb
+++ b/app/models/coupon.rb
@@ -82,7 +82,8 @@ class Coupon < ApplicationRecord
   end
 
   def users
-    invoices.map(&:user)
+    # compact to user removed
+    invoices.map(&:user).compact
   end
 
   def users_ids
@@ -104,5 +105,4 @@ class Coupon < ApplicationRecord
   def delete_gateway_coupon
     PaymentGatewayService.new.delete_coupon(id)
   end
-
 end