Set default upload destination

docs/usage.md

@@ -41,6 +41,10 @@ vich_uploader:
 This is the minimal amount of configuration needed in order to describe a
 working mapping.
 
+> [!NOTE]
+> If the `upload_destination` parameter is missing, it this concatenated with
+> the `%kernel.project_dir%/public` prefix and the `uri_prefix`.
+
 ## Step 2: link the upload mapping to an entity
 
 The final step is to create a link between the filesystem and the entity you

src/DependencyInjection/Configuration.php

@@ -103,7 +103,7 @@ private function addMappingsSection(ArrayNodeDefinition $node): void
                     ->prototype('array')
                         ->children()
                             ->scalarNode('uri_prefix')->defaultValue('/uploads')->end()
-                            ->scalarNode('upload_destination')->isRequired()->end()
+                            ->scalarNode('upload_destination')->end()
                             ->arrayNode('namer')
                                 ->addDefaultsIfNotSet()
                                 ->beforeNormalization()

src/DependencyInjection/VichUploaderExtension.php

@@ -39,6 +39,7 @@ public function load(array $configs, ContainerBuilder $container): void
         $config = $this->processConfiguration($configuration, $configs);
 
         $config = $this->fixDbDriverConfig($config);
+        $config = $this->fixUploadDestinationConfig($container, $config);
         $config = $this->createNamerServices($container, $config);
 
         // define a few parameters
@@ -200,6 +201,19 @@ protected function fixDbDriverConfig(array $config): array
         return $config;
     }
 
+    protected function fixUploadDestinationConfig(ContainerBuilder $container, array $config): array
+    {
+        // mapping with no declared upload_destination use the uri_prefix
+        $prefix = $container->getParameter('kernel.project_dir') ?? '';
+        foreach ($config['mappings'] as &$mapping) {
+            if (!\array_key_exists('upload_destination', $mapping)) {
+                $mapping['upload_destination'] = $prefix.'/public/'.$mapping['uri_prefix'];
+            }
+        }
+
+        return $config;
+    }
+
     protected function registerListeners(ContainerBuilder $container, array $config): void
     {
         $servicesMap = [