Three20: Swipe to delete

Need to implement Swipe to delete in your Three20 project? In order to do so, I added the 3 following methods to my datasource (TTListDataSource subclass):

– (BOOL) tableView: (UITableView *)tableView canEditRowAtIndexPath: (NSIndexPath *)indexPath {
return YES;
}

– (void)tableView:(UITableView *)tableView commitEditingStyle: (UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
[tableView beginUpdates];
if (editingStyle == UITableViewCellEditingStyleDelete) {
// Make sure the row is there to delete
if([_myModel.messages count] >= indexPath.row){
// Get the object to delete
MyObject* myObject = [[_myModel.messages objectAtIndex:indexPath.row] retain];

// Remove the object, in my case this makes an API call
[self removeObjectById: myobject.id];

// Remove the object from the array
[_myModel.messages removeObjectAtIndex:indexPath.row];

// clean up
TT_RELEASE_SAFELY(myObject);
}
// Delete the row from the UITableView
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObjects:indexPath, nil] withRowAnimation:YES];
}
[tableView endUpdates];
}

– (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [_myModel.messages count];
}

Note: before adding the numberOfRowsInSection method, I was getting NSInternalInconsistencyException errors.