From db88618e2d7d15a3992f8512ad0c3b2ab8824878 Mon Sep 17 00:00:00 2001
From: Ryan Cramer <ryan@processwire.com>
Date: Thu, 17 Aug 2023 10:28:18 -0400
Subject: [PATCH] Fix issue processwire/processwire-issues#1730

Co-authored-by: matjazpotocnik <matjaz.potocnik@um.si>
---
 .../FieldtypeFile/FieldtypeFile.module        | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/wire/modules/Fieldtype/FieldtypeFile/FieldtypeFile.module b/wire/modules/Fieldtype/FieldtypeFile/FieldtypeFile.module
index c7bd05ce..e95294c5 100644
--- a/wire/modules/Fieldtype/FieldtypeFile/FieldtypeFile.module
+++ b/wire/modules/Fieldtype/FieldtypeFile/FieldtypeFile.module
@@ -1328,6 +1328,32 @@ class FieldtypeFile extends FieldtypeMulti implements ConfigurableModule, Fieldt
 		return parent::___deleteField($field); 
 	}
 
+	/**
+	 * Return a cloned copy of $field
+	 *
+	 * @param Field $field
+	 * @return Field cloned copy
+	 *
+	 */
+	public function ___cloneField(Field $field) {
+		$this->wire()->fields->addHookAfter('cloned', function(HookEvent $e) {
+			$e->removeHook(null); // run once only
+			$oldField = $e->arguments(0); /** @var Field $oldField */
+			$newField = $e->arguments(1); /** @var Field $newField */
+			if(!$newField->type instanceof FieldtypeFile) return;
+			$templates = $e->wire()->templates;
+			$oldTpl = $templates->get("field-$oldField|field-x-$oldField");
+			if(!$oldTpl) return; // no custom field-* template present
+			$newTpl = $templates->clone($oldTpl, str_replace("$oldField", "$newField", $oldTpl->name));
+			if($newTpl) {
+				$e->message(sprintf(__('Cloned fields template - %1$s => %2$s'), $oldTpl->name, $newTpl->name));
+			} else {
+				$e->warning(sprintf(__('Error cloning template - %1$s => %2$s'), $oldTpl->name, $newTpl->name));
+			}
+		});
+		return parent::___cloneField($field);
+	}
+	
 	/**
 	 * Default list of file extensions supported by this field, and used as the default by getConfigInputfields()
 	 * method.