From b56c153125b4523bbf7222ff1035d292bbcdc889 Mon Sep 17 00:00:00 2001
From: Dan Stillman <dstillman@zotero.org>
Date: Fri, 26 Jun 2026 11:04:31 -0400
Subject: [PATCH] Fix Attachment Last Read search condition by matching at
 attachment level

Addresses #5978
---
 .../zotero/xpcom/data/searchConditions.js       |  3 ++-
 test/tests/searchTest.js                        | 17 +++++++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/chrome/content/zotero/xpcom/data/searchConditions.js b/chrome/content/zotero/xpcom/data/searchConditions.js
index 692b9bf0cd..d969eac60f 100644
--- a/chrome/content/zotero/xpcom/data/searchConditions.js
+++ b/chrome/content/zotero/xpcom/data/searchConditions.js
@@ -345,7 +345,8 @@ Zotero.SearchConditions = new function () {
 					isInTheLast: true
 				},
 				table: 'itemAttachments',
-				field: 'lastRead'
+				field: 'lastRead',
+				level: 'attachment'
 			},
 
 			// Deprecated
diff --git a/test/tests/searchTest.js b/test/tests/searchTest.js
index c6df6fe532..d4c4f83491 100644
--- a/test/tests/searchTest.js
+++ b/test/tests/searchTest.js
@@ -834,6 +834,23 @@ describe("Zotero.Search", function () {
 				});
 			});
 			
+			describe("lastRead", function () {
+				it("should roll a child attachment's last-read date up to its top-level item", async function () {
+					var item = await createDataObject('item', { title: 'zlastread' });
+					var attachment = await importPDFAttachment(item);
+					attachment.attachmentLastRead = Math.round(Date.now() / 1000);
+					await attachment.saveTx();
+
+					var s = new Zotero.Search();
+					s.libraryID = userLibraryID;
+					s.addCondition('resultLevel', 'item');
+					s.addCondition('lastRead', 'isInTheLast', '1 days');
+					assert.sameMembers(await s.search(), [item.id]);
+
+					await item.eraseTx();
+				});
+			});
+
 			describe("fulltextContent", function () {
 				it("should find text in HTML files", async function () {
 					var s = new Zotero.Search();