CODEWITHSUNDEEP
iosswiftobjectcore-data
Bogdan Bogdanov
Bogdan Bogdanov

Reputation: 992

Core Data Delete Objects with the same name

//taken from Core Data    
var items:NSMutableArray = ["Item 1","Item 2","Item 1","Item 3"]

    func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
         if(editingStyle == .Delete){
            let itemName = items.objectAtIndex(indexPath.row) as String
            //delete all rows in core data with this item name
         }
    }

How to delete all rows in Core Data which have field name "itemName" ?

Upvotes: 0

Views: 3571

Answers (2)

vihar sheladia
vihar sheladia

Reputation: 54

try this

  if let index = find(items, items.objectAtIndex(indexPath.row))

              {
                 items.removeAtIndex(index)

              }

Upvotes: 1

zisoft
zisoft

Reputation: 23078

Create an NSFetchRequest and set an NSPredicate with your item name. Executing this fetch request gives you an array of all NSManagedObjects with that predicate.

Then iterate over that array and call the NSManagedObjectContext's method deleteObject(object)

let fetchRequest = NSFetchRequest(entityName: "yourEntityName")
fetchRequest.includesSubentities = false
fetchRequest.returnsObjectsAsFaults = false

fetchRequest.predicate = NSPredicate(format:"name == '\(itemName)'")

var error: NSError?

// moc is your NSManagedObjectContext here
items = moc.executeFetchRequest(fetchRequest, error: &error)!

for item in items {
    moc.deleteObject(item)
}

Upvotes: 2

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