From c0f13293f7ba6f25134a01f5857dc7ae5e710129 Mon Sep 17 00:00:00 2001
From: Trenton Holmes <797416+stumpylog@users.noreply.github.com>
Date: Wed, 10 Apr 2024 06:32:42 -0700
Subject: [PATCH] Updates the currency validation to allow an optional negative

---
 src/documents/serialisers.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/documents/serialisers.py b/src/documents/serialisers.py
index f8537726f..26930ccec 100644
--- a/src/documents/serialisers.py
+++ b/src/documents/serialisers.py
@@ -546,7 +546,7 @@ class CustomFieldInstanceSerializer(serializers.ModelSerializer):
                 except Exception:
                     # If that fails, try to validate as a monetary string
                     RegexValidator(
-                        regex=r"^[A-Z][A-Z][A-Z]\d+(\.\d{2,2})$",
+                        regex=r"^[A-Z]{3}-?\d+(\.\d{2,2})$",
                         message="Must be a two-decimal number with optional currency code e.g. GBP123.45",
                     )(data["value"])
             elif field.data_type == CustomField.FieldDataType.STRING: