3.0 - ORM: Fatal error saving null datetime

[batopa]

To reproduce:

• create a table posts with a DATETIME nullable field publication_date

• in controller try to save null value for that field

  $data['publication_date'] = null;
  $c = TableRegistry::get('Posts');
  $e = $c->newEntity($data);
  $c->save($e);

A fatal error was triggered

Error: Call to a member function format() on a non-object   
File /..../vendor/cakephp/cakephp/src/Database/Type/DateTimeType.php    
Line: 62

Cake\Database\Type\DateTimeType::toDatabase($value, Driver $driver) method doesn't check if $value is null and it tries to use a method on it $value->format($this->_format);

[markstory]

#3411 has been merged.