PATCH is the better verb for changing file metadata

api/v1/api.go

@@ -98,7 +98,7 @@ func InstallHandler(r *mux.Router, st *store.Store, im *importer.Importer, infoL
 
 	fileHandler := make(handlers.MethodHandler)
 	fileHandler["GET"] = api.ReadFileOfGroup()
-	fileHandler["PUT"] = api.UpdateFileOfGroup()
+	fileHandler["PATCH"] = api.PatchFileOfGroup()
 	fileHandler["DELETE"] = api.DeleteFileOfGroup()
 	r.Handle("/groups/{group-id}/files/{file-id}", fileHandler)
 

api/v1/api_files.go

@@ -61,7 +61,7 @@ func (api *API) ReadFileOfGroup() http.Handler {
 	})
 }
 
-func (api *API) UpdateFileOfGroup() http.Handler {
+func (api *API) PatchFileOfGroup() http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		vars := mux.Vars(r)
 		id, err := idFromString(vars["file-id"])