I was wondering if errors are common for the code below for saving SwiftData data and what would be the best way to handle them (popup, closing the app)?
do {
try modelContext.save()
} catch {
print("error")
}
You shouldn't get errors for such a simple bit of code. The way you've phrased it suggests you are getting errors?
The worst way to handle such errors would be to close your app. You should handle the failures gracefully.
You should find out what the error actually is, and see why it's happening. You'd probably be able to stop them occurring in the first place.
If it's an error you cannot work around then you should probably tell the user that you couldn't save the data, and leave it on the screen so they can try again. Make it as seamless as possible for the user. No one likes a technical error message in an app.