Sorting SwiftData module records based on recent update

Question

Ammar S. Mitoori OP

Created Aug ’24

Replies 3

Boosts 0

Participants 2

Hi,

I know how to sort SwiftData records based on one of its properties such as name, but how to sort based on recent updated records ? like in Apple Notes App ?

Kind Regards

Answered by DTS Engineer in 798468022

SwiftData doesn't provide the modified date for your objects, and so you need to add and maintain your own attribute to record the modified date of your objects, and use the attribute to sort.

Best,
——
Ziqiao Chen
 Worldwide Developer Relations.

Boost

Answer 1

DTS Engineer OP

Apple

Aug ’24

Recommended

SwiftData doesn't provide the modified date for your objects, and so you need to add and maintain your own attribute to record the modified date of your objects, and use the attribute to sort.

Best,
——
Ziqiao Chen
 Worldwide Developer Relations.

1

Answer 2

Ammar S. Mitoori OP

Aug ’24

Thanks allot, so is there any API or observation method to get notified when some record is changed or that should be done manually as well ?

Kind Regards

0

Answer 3

DTS Engineer OP

Apple

Aug ’24

SwiftData provides didSave for you to get notified when the model context is saved. The doc says that the notification’s userInfo dictionary contains the persistent identifiers of any inserted, updated, or deleted models.

However, didSave doesn't work yet as of today, and so you might consider using the Core Data notification (.NSManagedObjectContextDidSave) instead.

Best,
——
Ziqiao Chen
 Worldwide Developer Relations.

1