From: Magnus Hagander <magnus@hagander.net>
Date: Tue, 20 Aug 2024 08:33:16 +0000 (+0200)
Subject: Add a template tag to access an array by index
X-Git-Url: http://git.postgresql.org/gitweb/static/gitweb.js?a=commitdiff_plain;h=43f5f188f26a23555a3030c952d7f287e4f6ca55;p=pgeu-system.git

Add a template tag to access an array by index

For some reason, django won't let us do that from a template, so we have
to add our own.
---

diff --git a/postgresqleu/confreg/templatetags/miscutil.py b/postgresqleu/confreg/templatetags/miscutil.py
index 8711ed27..9c4f16fa 100644
--- a/postgresqleu/confreg/templatetags/miscutil.py
+++ b/postgresqleu/confreg/templatetags/miscutil.py
@@ -29,3 +29,12 @@ def jsonstruct(value):
 @register.filter(name='subtract')
 def subtract(value, arg):
     return value - arg
+
+
+@register.simple_tag(name='arrayindex')
+def arayindex(value, arg, mod=None):
+    if mod:
+        arg = arg + mod
+    if arg < len(value):
+        return value[arg]
+    return ''