feat: Support deleting metadata from WebDAVartonge/feat/allow_deleting_metadata

The `$value` will be `null` if the update is wrapped inside a `<d:remove>...</d:remove>` block.

Signed-off-by: Louis Chemineau <louis@chmn.me>

1 files changed, 6 insertions, 0 deletions

diff --git a/apps/dav/lib/Connector/Sabre/FilesPlugin.php b/apps/dav/lib/Connector/Sabre/FilesPlugin.php
index dff71cbfaaf..ec84486b556 100644
--- a/apps/dav/lib/Connector/Sabre/FilesPlugin.php
+++ b/apps/dav/lib/Connector/Sabre/FilesPlugin.php
@@ -599,6 +599,12 @@ class FilesPlugin extends ServerPlugin {
 						throw new FilesMetadataException('you do not have enough rights to update \'' . $metadataKey . '\' on this node');
 					}
 
+					if ($value === null) {
+						$metadata->unset($metadataKey);
+						$filesMetadataManager->saveMetadata($metadata);
+						return true;
+					}
+
 					// If the metadata is unknown, it defaults to string.
 					try {
 						$type = $knownMetadata->getType($metadataKey);