From 67118cd6c0c850c7aa76abd8617e4dac5fe66538 Mon Sep 17 00:00:00 2001
From: Pascal Martineau <pascal@lewebsimple.ca>
Date: Wed, 24 Sep 2025 08:46:02 -0400
Subject: [PATCH] wip: dynamic preview

---
 .../themes/ccat/includes/vendors/acf.php      | 30 +++++++++++++++++++
 wp-content/themes/ccat/layouts/preview.php    |  1 +
 .../ccat/server/api/acf-preview.post.ts       |  3 ++
 3 files changed, 34 insertions(+)
 create mode 100644 wp-content/themes/ccat/layouts/preview.php
 create mode 100644 wp-content/themes/ccat/server/api/acf-preview.post.ts

diff --git a/wp-content/themes/ccat/includes/vendors/acf.php b/wp-content/themes/ccat/includes/vendors/acf.php
index 51aaacc..7584128 100644
--- a/wp-content/themes/ccat/includes/vendors/acf.php
+++ b/wp-content/themes/ccat/includes/vendors/acf.php
@@ -1,5 +1,35 @@
 <?php
 
+// Override template file path for ACF previews
+add_filter( 'acfe/flexible/render/template', 'ccat_acfe_flexible_render_template', 10, 4 );
+function ccat_acfe_flexible_render_template( $file, $field, $layout, $is_preview ) {
+	if ( ! $is_preview ) {
+		return $file;
+	}
+	// Return relative path - ACF Extended Pro will use acfe_locate_file_path() to find it
+	return 'layouts/preview.php';
+}
+
+// Disable caching for preview requests
+add_action( 'acfe/flexible/render/before_template', 'ccat_disable_cache_for_preview', 1, 3 );
+function ccat_disable_cache_for_preview( $field, $layout, $is_preview ) {
+	if ( ! $is_preview ) {
+		return;
+	}
+
+	// Disable WordPress object cache for this request
+	wp_cache_flush();
+
+	// Send no-cache headers
+	nocache_headers();
+
+	// Disable ACF cache if function exists
+	if ( function_exists( 'acf_get_store' ) ) {
+		acf_get_store( 'fields' )->reset();
+		acf_get_store( 'field-groups' )->reset();
+	}
+}
+
 // Disable ACF / ACFE modules
 add_action( 'acf/init', 'ccat_acf_init' );
 function ccat_acf_init() {
diff --git a/wp-content/themes/ccat/layouts/preview.php b/wp-content/themes/ccat/layouts/preview.php
new file mode 100644
index 0000000..f5ae4bf
--- /dev/null
+++ b/wp-content/themes/ccat/layouts/preview.php
@@ -0,0 +1 @@
+<pre><?php var_dump( get_row( true ) ); ?></pre>
diff --git a/wp-content/themes/ccat/server/api/acf-preview.post.ts b/wp-content/themes/ccat/server/api/acf-preview.post.ts
new file mode 100644
index 0000000..7187eea
--- /dev/null
+++ b/wp-content/themes/ccat/server/api/acf-preview.post.ts
@@ -0,0 +1,3 @@
+export default defineEventHandler(() => {
+  return `<div>TODO: Preview from Nuxt API endpoint</div>`;
+});