Core Data NSPredicate not working

Question

Please help me there is no any specific error, run time stop

there is screenshot

func fachDataById(entityName: String, colummName: String, value: Int) -> Bool {
    let appDeleget = UIApplication.sharedApplication().delegate as! AppDelegate
    let manegeContext = appDeleget.managedObjectContext
    let fetchRequist = NSFetchRequest(entityName: entityName)
    print("ok fetchRequist")
    fetchRequist.predicate = NSPredicate(format: "%K == %@", colummName, value)

    do{
        let results = try manegeContext.executeFetchRequest(fetchRequist)
        print(results)
        return true
    }
    catch{
        print("Error")
        return false
    }
}

Try insert some breakpoints and inspect your fields to see if they are what you expect them to be. — henrikstroem, Jun 11 '16 at 14:52
Does colummName and value are expected values that you are using them in your coredata table? — Husein Behboudi Rad, Jun 11 '16 at 15:12
Did you debug this? Did you check the variables value? Are they valid? — Husein Behboudi Rad, Jun 11 '16 at 15:26
You cannot use %@ for Int values. See [this answer](http://stackoverflow.com/a/28622582/3985749). — pbasdf, Jun 11 '16 at 16:21

score 2 · Accepted Answer · answered Jun 11 '16 at 16:29

2

The problem is %@ format for value:Int , cast it to value as NSObject or AnyObject like following:

NSPredicate(format: "%K == %@", colummName, value as NSObject)

answered Jun 11 '16 at 16:29

PANKAJ VERMA

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Core Data NSPredicate not working

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