Detect when a database was added

[tobiasBora]

As of today, it is documented here https://dexie.org/docs/Dexie/Dexie.getDatabaseNames() that it is impossible in Dexie 3 and 4 to listen for the creation/deletion of databases. I'd love to have an observable like:

let names = PlanotoFileDexie.getDatabaseNamesObs();
$: files = databaseNames.map(name => ({uuid: name,
                                       file: liveQuery(() => new PlanotoFileDexie(name).fileInfo.get(0))}));

to be able to list all databases (I use them to store files basically).

[dfahlander]

You can get an observable and all if you could change your model to let a file be represented by a row in a single db instead. (And you'd get better performance).

[tobiasBora]

Yes, my main issue so far is that this creates a repetition: I want fileInfo to stay in the database as I will export/save/… and I want fileInfo to also be exported with the database. Also I don't want to duplicate fileInfo inside a separate database as it does not comply with DRY, leading to easy inconsistencies. Anyway, for now I don't plan to have such a huge number of files that it is a performance problem. For now, what I did is using a writable([]) populated by getDatabaseNamesObs that I update each time I create a new file. This seems to work well enough for now, but this will not update if a file is created in another tab for instance… but not too hard to fix I guess.