cast of default column value CURRENT_TIMESTAMP in MysqlAdatper throws exception

[bladenkerst]

When declaring a model for a table with a CURRENT_TIMESTAMP set as the default value, the MysqlAdapter throws an exception. Ideally one would not use CURRENT_TIMESTAMP on a database while using the ActiveRecord pattern but we all have the fun of working with legacy databases, especially since this is very new to PHP.

The Exception is thrown from DateTime::__construct =>
>> $a = new DateTime('CURRENT_TIMESTAMP');
Exception (code: 0) got thrown
exception 'Exception' with message 'DateTime::__construct(): Failed to parse time string (CURRENT_TIMESTAMP) at position 0 (C): The timezone could not be found in the database' in...

Possible Fix (mimics Rails which just returns nil on a bad time parse):

case self::DATETIME:
case self::DATE:
  try {
    return ($value instanceof \DateTime) ? $value : new \DateTime($value);
  } catch(\Exception $e) {
    return null;
  }

[kla]

I've applied this fix. thanks!