Take care when using CakePHP Model methods

Fixed a subtle bug in our code recently:

$options = array(); // method params
$this->Foo->id = 'bar';
$this->Foo->baz($options);

Setting ->id is fairly handy, but unexpected results occur when used in conjunction with ->find() and ->del(); e.g.,

$options = array('contain' => array());
$this->Foo->id = 'bar';
$this->Foo->find('first', $options)); // BUG

Now for ->del():

$this->Foo->id = 'bar';
$this->Foo->del(); // BUG

This is especially bad behavior when deleting a record, so take care to inspect the query log – we use Oracle 11g Release 2 here.