Cannot update object that was never inserted

self.category.name = self.nameTextField.text;

NSManagedObjectContext *managedObjectContext = [[FTAppDelegate sharedAppDelegate] managedObjectContext];

if(![self.category isInserted])
{
[managedObjectContext insertObject:self.category];
}

NSError *error = nil;
[managedObjectContext save:&error];
if (error) {
NSLog(@"error saving: %@",error);
}

Basically check the object is it has been inserted before, if not, insert it and then save the context.