From b48c434266a6c1458f5c3f0ec3ebcc7bc9009608 Mon Sep 17 00:00:00 2001
From: Se1foo <158568413+Se1foo@users.noreply.github.com>
Date: Sun, 2 Aug 2026 14:33:01 +0100
Subject: [PATCH] Fix: parse unpadded yyyy-mm-dd date input regardless of
 locale (#13501)

---
 .../src/app/utils/ngb-date-parser-formatter.spec.ts | 13 +++++++++++++
 src-ui/src/app/utils/ngb-date-parser-formatter.ts   | 10 +++-------
 2 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/src-ui/src/app/utils/ngb-date-parser-formatter.spec.ts b/src-ui/src/app/utils/ngb-date-parser-formatter.spec.ts
index 10f27d70b..79952c996 100644
--- a/src-ui/src/app/utils/ngb-date-parser-formatter.spec.ts
+++ b/src-ui/src/app/utils/ngb-date-parser-formatter.spec.ts
@@ -57,6 +57,19 @@ describe('LocalizedDateParserFormatter', () => {
     expect(val).toEqual({ day: 4, month: 5, year: 2023 })
   })
 
+  it('should parse yyyy-mm-dd input with unpadded month or day by locale', () => {
+    let val = dateParserFormatter.parse('2023-5-4')
+    expect(val).toEqual({ day: 4, month: 5, year: 2023 })
+
+    settingsService.setLanguage('de-de') // dd.mm.yyyy
+    val = dateParserFormatter.parse('2023-5-4')
+    expect(val).toEqual({ day: 4, month: 5, year: 2023 })
+
+    settingsService.setLanguage('tr-tr') // yyyy-mm-dd
+    val = dateParserFormatter.parse('2023-5-4')
+    expect(val).toEqual({ day: 4, month: 5, year: 2023 })
+  })
+
   it('should parse date struct to string by locale', () => {
     const dateStruct = {
       day: 4,
diff --git a/src-ui/src/app/utils/ngb-date-parser-formatter.ts b/src-ui/src/app/utils/ngb-date-parser-formatter.ts
index 48806a80a..aab5c6734 100644
--- a/src-ui/src/app/utils/ngb-date-parser-formatter.ts
+++ b/src-ui/src/app/utils/ngb-date-parser-formatter.ts
@@ -52,15 +52,11 @@ export class LocalizedDateParserFormatter extends NgbDateParserFormatter {
       let segments = value.split(this.separatorRegExp)
 
       // always accept strict yyyy*mm*dd format even if that's not the input format since we can be certain its not yyyy*dd*mm
-      if (
-        value.length == 10 &&
-        segments.length == 3 &&
-        segments[0].length == 4
-      ) {
+      if (segments.length == 3 && segments[0].length == 4) {
         return inputFormat
           .replace('yyyy', segments[0])
-          .replace('mm', segments[1])
-          .replace('dd', segments[2])
+          .replace('mm', segments[1].padStart(2, '0'))
+          .replace('dd', segments[2].padStart(2, '0'))
       } else {
         // otherwise pad & re-join without separator
         value = segments.map((segment) => segment.padStart(2, '0')).join('')