How can I merge two Doctrine records without null values overwriting existing values?

I have an array of default values that I'd like to merge with a Doctrine record. I tried using Doctrine's merge method but it's overwriting existing values with the merge array, even if th开发者_StackOverflow社区e merge array contains null values. I'd like to merge in a way that only null or empty values are replaced with existing default values.

Try this:

    $yourRecord = new YourRecordModel();
    $yourRecord->assignIdentifier(123); // ID of the record to update
    foreach ($yourArray as $key=>$value)
    {
        if (!empty($value))
        {
            $yourRecord[$key] = $value;
        }
    }
    $yourRecord->save();