From 97f88d5eeb21fde001d7c6d6930e7d12391dc241 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Fromme?= <fromme@dreipunktnull.com>
Date: Wed, 20 May 2026 14:55:41 +0200
Subject: [PATCH] fix: accept response code 422 in htmx as 'should swap'

---
 assets/app.js | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/assets/app.js b/assets/app.js
index 6ced00b..36c5a9f 100644
--- a/assets/app.js
+++ b/assets/app.js
@@ -13,3 +13,12 @@ htmx.config.allowScriptTags = false
 htmx.config.withCredentials = true
 htmx.config.selfRequestsOnly = false
 htmx.config.timeout = 50000 // 50 seconds - slightly higher than backend timeout (45s)
+
+document.body.addEventListener('htmx:beforeSwap', (event) => {
+    // Symfony renders invalid forms with 422; let HTMX swap those responses so inline
+    // validation errors are actually shown to the user.
+    if (event.detail?.xhr?.status === 422) {
+        event.detail.shouldSwap = true
+        event.detail.isError = false
+    }
+})