From 3fa6807837caf42d4f15bb94f546e95a9c7fcb25 Mon Sep 17 00:00:00 2001
From: BaiJiangJie <bugatti_it@163.com>
Date: Tue, 16 Oct 2018 09:53:30 +0800
Subject: [PATCH] =?UTF-8?q?[Update]=20=E6=B7=BB=E5=8A=A0=EF=BC=88=E5=87=8F?=
 =?UTF-8?q?=E6=B3=95=EF=BC=89=E6=A0=87=E7=AD=BE=E8=BF=87=E6=BB=A4=E5=99=A8?=
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---
 apps/common/templatetags/common_tags.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/apps/common/templatetags/common_tags.py b/apps/common/templatetags/common_tags.py
index 7cafb0460..d77263955 100644
--- a/apps/common/templatetags/common_tags.py
+++ b/apps/common/templatetags/common_tags.py
@@ -106,3 +106,8 @@ def to_dict(data):
 def sort(data):
     print(data)
     return sorted(data)
+
+
+@register.filter
+def subtract(value, arg):
+    return value - arg