Yes, it is possible to use validation without a table. Simply define
$useTable = false in your model and define the validation rules as if
there was a table. You can then use cakes form helper without any
problems.
This is how you can force validation in your controller (part of my
contact page):
if (!empty($this->data)) {
$this->Contact->set($this->data);
if($this->Contact->validates()) {
//do something
}
} else {
$errors = $this->Contact->invalidFields();
$this->render();
}
Hope that helps,
Markus
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