How to properly Init a custom UITableviewCell?

I am using the following 2 methods to return a custom cell:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    NSString *key = [self keyForIndexPath:indexPath];
    UITableViewCell *cell;

    if ([key isEqualToString:DoneButtonCellKey]) {
        cell = [self [self doneButtonCellForIndexPath:indexPath];
        return cell;
    } else {
        //code to return default cell...
    }
} 

Then:

- (DoneButtonCell *)doneButtonCellForIndexPath: (NSIndexPath *)indexPath {

    DoneButtonCell *cell = [self.tableView dequeueReusableCellWithIdentifier:DoneButtonCellIdentifier forIndexPath:indexPath];
    return cell;

}

What is the correct init method to use with the cell here so I can change some properties of the cell when it is initialized?

EDIT: I found the problem, as the init/awakeFromNib methods were not being called for me. I tracked down the error and it was that I had not changed the "Custom Class" from UITableViewCell to my custom class. Now awakeFromNib AND initWithCoder work as described below.