list() returns no files when fetching from a folder in a Supabase storage bucket

Question

I'm new to flutter and supabase. I am trying to list all files in a specific folder in a bucket.

In this example, namely folder '1'.

Future<List<FileObject>> fetchFilesFromFolder() async {
    return await supabase
    .storage
    .from('public-images')
    .list(path: folderId.toString()); // folderId is '1'
  }

@override
  Widget build(BuildContext context) {
    final objects = fetchFilesFromFolder();
    
    return FutureBuilder<List<FileObject>>(
            future: objects,
            builder: (context, snapshot) {
              if (snapshot.hasData) {
                final files = snapshot.data!;
                print('FOLDER ID');
                print(folderId);
                print('Fetched objects:');
                print(files);
...

The line print(files) prints out an empty list. Why is it not fetching the files?

I'd like to point us that getPublicUrl() works fine in the project, so I assume the Supabase set up should be fine?

final url1 = supabase.storage
                  .from('public-images')
                  .getPublicUrl('1/hackney1.jpeg');

For context, this is the content of the storage: Content of my supabase bucket

I'd really appreciate the help. Thank you!

Answer 1

.list() requires select RLS policy on your bucket even if it's a public bucket.

create policy "Public Access"
on storage.objects for select
using ( bucket_id = 'public-images' );