From 9b4baab6b6409b13b8c00727ec5ea6ae771350bf Mon Sep 17 00:00:00 2001
From: arielRevo <120393131+arielRevo@users.noreply.github.com>
Date: Thu, 7 Mar 2024 17:24:52 +0100
Subject: [PATCH] Fix nullability issue in construct_fields function (#34)

* Fix nullability issue in construct_fields function

* Update types.py
---
 graphene_django/types.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/graphene_django/types.py b/graphene_django/types.py
index 4565a58..96794de 100644
--- a/graphene_django/types.py
+++ b/graphene_django/types.py
@@ -55,7 +55,9 @@ def construct_fields(
             else:
                 _convert_choices_to_enum = False
 
+        # Make Django field nullable then graphene will generate the graphql field nullable.
         if name != 'id' and not permission_raise_exception:
+            previous = field.null
             field.null = True
 
         converted = convert_django_field_with_choices(
@@ -65,6 +67,10 @@ def construct_fields(
         if isinstance(converted, NonNull) and getattr(converted, '_of_type', None) == Boolean and not permission_raise_exception:
             converted = Boolean(description=field.help_text, required=False)
 
+        # Restore Django field nullability to original value
+        if name != 'id' and not permission_raise_exception:
+            field.null = previous
+
         fields[name] = converted
 
     return fields