refactor(container): Improve HTML attributes handling in container templates

- Replaced direct usage of container attributes with a dynamically built HTML attributes string for better flexibility.
- Updated content retrieval to ensure consistent use of containerRef for UUID and acceptTypes.

Author: fmontes

instructions/guide.md

@@ -753,7 +753,8 @@ if (!isset($containerRef)) {
 global $pageAsset;
 
 $identifier = $containerRef->identifier ?? null;
-$contentlets = $containerRef->contentlets ?? null
+$uuid = $containerRef->uuid ?? null;
+$contentlets = $containerRef->contentlets ?? null;
 
 // Container attributes for UVE
 $containerAttrs = [
@@ -764,11 +765,16 @@ $containerAttrs = [
     'data-max-contentlets' => $containerRef->maxContentlets ?? 0
 ];
 
+// Build container HTML attributes string
+$containerHtmlAttrs = '';
+foreach ($containerAttrs as $attr => $value) {
+    if ($value !== null && $value !== '') {
+        $containerHtmlAttrs .= ' ' . $attr . '="' . htmlspecialchars($value) . '"';
+    }
+}
 ?>
-<div<?= $containerAttrs ?>>
+<div<?= $containerHtmlAttrs ?>>
     <?php
-    $contentlets = $containerRef->contentlets
-
     if ($contentlets) {
         foreach ($contentlets as $contentlet) {
             // Contentlet attributes for UVE
@@ -782,8 +788,8 @@ $containerAttrs = [
                 'data-dot-container' => json_encode([
                     'identifier' => $identifier,
                     'uuid' => $uuid,
-                    'acceptTypes' => $container->acceptTypes ?? [],
-                    'maxContentlets' => $container->maxContentlets ?? 0,
+                    'acceptTypes' => $containerRef->acceptTypes ?? [],
+                    'maxContentlets' => $containerRef->maxContentlets ?? 0,
                     'variantId' => $containerRef->variantId ?? null
                 ])
             ];