fix(dav): Use IUser::getDisplayName directly

apps/dav/lib/Controller/OutOfOfficeController.php

@@ -107,7 +107,6 @@ public function getOutOfOffice(string $userId): DataResponse {
 	 * @param string $status Short text that is set as user status during the absence
 	 * @param string $message Longer multiline message that is shown to others during the absence
 	 * @param ?string $replacementUserId User id of the replacement user
-	 * @param ?string $replacementUserDisplayName Display name of the replacement user
 	 * @return DataResponse<Http::STATUS_OK, DAVOutOfOfficeData, array{}>|DataResponse<Http::STATUS_BAD_REQUEST, array{error: 'firstDay'|'statusLength'}, array{}>|DataResponse<Http::STATUS_UNAUTHORIZED, null, array{}>|DataResponse<Http::STATUS_NOT_FOUND, null, array{}>
 	 *
 	 * 200: Absence data
@@ -122,8 +121,6 @@ public function setOutOfOffice(
 		string $status,
 		string $message,
 		?string $replacementUserId,
-		?string $replacementUserDisplayName,
-
 	): DataResponse {
 		$user = $this->userSession?->getUser();
 		if ($user === null) {
@@ -133,6 +130,7 @@ public function setOutOfOffice(
 			return new DataResponse(['error' => 'statusLength'], Http::STATUS_BAD_REQUEST);
 		}
 
+		$replacementUser = null;
 		if ($replacementUserId !== null) {
 			$replacementUser = $this->userManager->get($replacementUserId);
 			if ($replacementUser === null) {
@@ -153,7 +151,7 @@ public function setOutOfOffice(
 			$status,
 			$message,
 			$replacementUserId,
-			$replacementUserDisplayName
+			$replacementUser?->getDisplayName()
 		);
 		$this->coordinator->clearCache($user->getUID());
 

apps/dav/openapi.json

@@ -730,11 +730,6 @@
                                         "type": "string",
                                         "nullable": true,
                                         "description": "User id of the replacement user"
-                                    },
-                                    "replacementUserDisplayName": {
-                                        "type": "string",
-                                        "nullable": true,
-                                        "description": "Display name of the replacement user"
                                     }
                                 }
                             }

apps/dav/src/components/AbsenceForm.vue

@@ -219,8 +219,7 @@
 					lastDay: formatDateAsYMD(this.lastDay),
 					status: this.status,
 					message: this.message,
-					replacementUserId: this.replacementUser?.user ?? null,
-					replacementUserDisplayName: this.replacementUser?.displayName ?? null,
+					replacementUserId: this.replacementUser?.user ?? null
 				})
 				showSuccess(this.$t('dav', 'Absence saved'))
 			} catch (error) {