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Attachments docs: Point to uses in example #336

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Oct 6, 2025
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Attachments docs: Point to uses in example #336

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9 changes: 0 additions & 9 deletions demos/supabase-todolist/lib/attachments/queue.dart
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Expand Up @@ -53,12 +53,3 @@ Future<Attachment> savePhotoAttachment(
},
);
}

Future<Attachment> deletePhotoAttachment(String fileId) async {
return await attachmentQueue.deleteFile(
attachmentId: fileId,
updateHook: (context, attachment) async {
// Optionally update relationships in the same transaction
},
);
}
5 changes: 5 additions & 0 deletions packages/powersync_core/doc/attachments.md
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Expand Up @@ -43,6 +43,11 @@ The attachments' state is stored in a local-only attachments table.

See the [supabase-todolist](https://github.com/powersync-ja/powersync.dart/tree/main/demos/supabase-todolist) demo for a basic example of attachment syncing.

In particular, relevant snippets from that example are:

- The attachment queue is set up [here](https://github.com/powersync-ja/powersync.dart/blob/98d73e2f157a697786373fef755576505abc74a5/demos/supabase-todolist/lib/attachments/queue.dart#L16-L36), using conditional imports to store attachments in the file system on native platforms and in-memory for web.
- When a new attachment is added, `saveFile` is called [here](https://github.com/powersync-ja/powersync.dart/blob/98d73e2f157a697786373fef755576505abc74a5/demos/supabase-todolist/lib/attachments/queue.dart#L38-L55) and automatically updates references in the main schema to reference the attachment.

### Setup

First, add a table storing local attachment state to your database schema.
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