如何在CakePHP中手动转义mySQL数据库插入的布尔值？

Question

i'm having the following code:

  /** @var DboSource $db */
  $db = $this->getDataSource();

  var_dump($db->value($open, 'boolean'));
  die;

  $this->query(
    'INSERT INTO foo(`client_id`, `open`, `modified`, `created`) VALUES(:clientId, :open, NOW(), NOW()) ON DUPLICATE KEY UPDATE modified = now();',
    [
      ':clientId' => $db->value($clientId, 'integer'),
      ':open' => $db->value($open, 'boolean')
    ]
  );

$open is a boolean value, the 'open' -column is defined as tinyint(1) . When wrapping $open with $db->value($open, 'boolean') the result is '1' , '0' (see the single quotes).

Unfortunately this output leads to a new record with open = false (as '1' is not properly inserted as true )

If I use $db->boolean($open) as option, everything's working correctly.

But I think, $db->value() should do the same job as well?

Answer 1

Looking at when and how DboSource::value() is being used internally, this is the expected behavior. If it wouldn't do what it does, then values wouldn't get prepared properly for Model::save() operations.

DboSource::value() internally passes the "booleanized" value ( DboSource::boolean($value, true) this already adds quotes) to PDO::quote() , where the value is going to be quoted anyways no matter what, ie 0 , 1 , '0' , '1' , true , or false , it will always return a quoted value, that is '0' , '1' or even '' (for false , which is equal to 0 ).

The problem with your code is, that values passed to the second argument of Model::query() are finally being passed to PDOStatement::execute() ( .../DboSource.php#L458 ), which treats all values as strings and escapes them accordingly, so finally in your query a '1' will end up as '\\'1\\'' , hence the problems.

TL;DR

This seems to be the expected behavior, it's just poorly documented. So when using the second argument of Model::query() , sanitize the values if necessary (ie cast to integers, booleans, strings, etc), but do not escape them, escape them only when you manually insert them in the actual query string ( which should however be avoided whenever possible )!