Model validation rule (checkUnique method got from tempdocs :-) ):
=====
var $validate = array(
'name' => array(
'on'=>'create',
'rule' => array('checkUnique'),
'message' => 'Name is not unique!',
'allowEmpty' => false,
),
=====
$Model->data
========
data[Model][id]=3;
data[Model][name]='A name';
========
When I call Model->validates() in my controller, it fails (name isn't
unique), but Model->save() works fine.
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