From 430603ec001b749811502af8eb032a4036eecc25 Mon Sep 17 00:00:00 2001
From: slhx agent <slhx@users.noreply.github.com>
Date: Mon, 22 Jun 2026 22:12:27 +0200
Subject: [PATCH] feat(examples): make v0 todo rename form editable

Turn the v0 todo row rename action into an editable generated form instead of a fixed submit value, and preserve validation/recovery behavior for blank titles. This keeps the beginner exemplar on generated form handles and user-visible recovery instead of hidden demo shortcuts.

req: examples/001

req: canonical_authoring/003
---
 examples/v0/src/main.rs                      | 21 ++++++++++++++++++++
 examples/v0/templates/partials/todo_row.heml |  8 ++++++--
 2 files changed, 27 insertions(+), 2 deletions(-)

diff --git a/examples/v0/src/main.rs b/examples/v0/src/main.rs
index 4f5558c..5b0301b 100644
--- a/examples/v0/src/main.rs
+++ b/examples/v0/src/main.rs
@@ -402,6 +402,13 @@ mod auth_handlers {
 
 fn rename_todo_effect(state: Arc<ExampleState>, form: RenameTodo) -> impl IntoEffect {
     // req: examples/001 req: canonical_authoring/003
+    if form.title.as_str().is_empty() {
+        return Some((
+            todo_row::rename_todo_form.focus("title"),
+            todos::notice.set("Add a title before renaming"),
+        ));
+    }
+
     let mut todos = state.todos.lock().unwrap();
     todos
         .iter_mut()
@@ -710,6 +717,20 @@ mod tests {
         assert!(add.payload_contains("Added Ship v0"));
         assert!(add.resets_form(todos::new_todo));
 
+        let rename_validation = inspect_batch(
+            InteractionRequest::from(form(
+                todo_row::rename_todo,
+                &[("id", "1"), ("title", "   ")],
+            ))
+            .dispatch_async(handlers(state.clone()))
+            .await
+            .unwrap()
+            .batch,
+        );
+        assert_eq!(state.todos.lock().unwrap()[0].title, "Ship v0");
+        assert!(rename_validation.payload_contains("Add a title before renaming"));
+        assert!(rename_validation.updates_text(todos::notice));
+
         let rename = inspect_batch(
             InteractionRequest::from(form(
                 todo_row::rename_todo,
diff --git a/examples/v0/templates/partials/todo_row.heml b/examples/v0/templates/partials/todo_row.heml
index fe3cf18..1d73acb 100644
--- a/examples/v0/templates/partials/todo_row.heml
+++ b/examples/v0/templates/partials/todo_row.heml
@@ -1,8 +1,12 @@
 <li +data-key="self.id">
   <span>{+ self.title +}</span>
-  <form data-hemx-handle="rename_todo">
+  <form data-hemx-handle="rename_todo" data-hemx-form="rename_todo">
     <input type="hidden" name="id" +value="self.id">
-    <button type="submit" name="title" value="Renamed todo">Rename</button>
+    <label>
+      Rename
+      <input name="title" +value="self.title" required="required">
+    </label>
+    <button type="submit">Save</button>
   </form>
   <form data-hemx-handle="delete_todo">
     <button type="submit" name="id" +value="self.id">Delete</button>