I have a CoreData entity that has an attribute called dateLastUsed and I store a Date() in it and anytime this hymn is sung I update that date to the Date() its being used.

I am trying to figure out filter on that. My view has a segmented control with items for 30,60,90 days and 6 months and 1 year. I need help figuring out how to use @FetchRequest with a predicate to say give me all the hymns that have been sung in the last 30,60,90 days etc also 6 month and 1 year.

This is what I wrote but i'm not sure if this is correct.

@FetchRequest(entity: HymnData.entity(), sortDescriptors: [
        NSSortDescriptor(keyPath: \HymnData.hymnName, ascending: true)
        ],
        predicate: NSPredicate(format: "dateLastUsed < %@", 30)
    ) private var hymnData: FetchedResults<HymnData>

Any help here would be great

Mark

Thank you this worked. Thanks for explanation on how the date is stored.

Mark

Is there a way to see if a date entered into core data is equal to todays date (exlcuding hours, minutes seconds ...) with predicate during Fetch Request.

Whenever I search online, it shows me how you would've done it with swift 2 or 3 but that code doesn't work with Swift 5. I am a beginner and I simply want to know how core data and fetch requests work. Also, is there a place that explains how dates in swift work cos they are so confusing and complicated.

Thanks, Rohan