From 48d6c9bb8f82a557c460e10b281dc68f40b7152c Mon Sep 17 00:00:00 2001
From: Anton Krytskyi <ant.krytskyi@gmail.com>
Date: Mon, 10 Nov 2025 16:59:04 +0200
Subject: [PATCH] add filtering by email for users

---
 api/users/serializers.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/api/users/serializers.py b/api/users/serializers.py
index 301985ac744..e3fa4d723e8 100644
--- a/api/users/serializers.py
+++ b/api/users/serializers.py
@@ -71,6 +71,7 @@ class UserSerializer(JSONAPISerializer):
         'middle_names',
         'family_name',
         'id',
+        'username',
     ])
     writeable_method_fields = frozenset([
         'accepted_terms_of_service',
@@ -98,6 +99,10 @@ class UserSerializer(JSONAPISerializer):
     can_view_reviews = ShowIfCurrentUser(ser.SerializerMethodField(help_text='Whether the current user has the `view_submissions` permission to ANY reviews provider.'))
     accepted_terms_of_service = ShowIfCurrentUser(ser.SerializerMethodField())
 
+    # Expose a username field for filtering only. It maps to the OSFUser.username.
+    # Marked write_only so it does not appear in responses.
+    username = ser.CharField(write_only=True, required=False)
+
     links = HideIfDisabled(
         LinksField(
             {