-- SiCo007 <[EMAIL PROTECTED]> wrote
(on Tuesday, 19 February 2008, 05:17 AM -0800):
> I would like to add this ability to non Zend Form validators and am
> interested how Zend_Form goes about passing the context to the validators.
Very easy: it simply passes the value being tested as $value, and then
the full array of values being validated by the form as $context.
In Zend_Form::isValid() (and isValidPartial()), we iterate over the
various elements and sub forms, and call:
$item->isValid($value, $data)
Then, within Zend_Form_Element, we loop over each validator, and simply
call:
$validator->isValid($value, $data)
Zend_Validate_Interface defines isValid($value), but PHP allows you to
specify *additional* arguments in concrete implementations, which is why
this is possible in Zend_Form.
> Have you subclassed Zend_Filter_Input or is there another method?
Zend_Filter_Input is not used by Zend_Form; Zend_Form uses
Zend_Validate_* and Zend_Filter_* directly.
ZFI is for evaluating many elements at once, while Zend_Form places the
actual validation and filter chains with the *individual* elements --
which allows for re-use of elements in different forms. As such, the
design of ZFI does not really suit Zend_Form, though they share some
similar capabilities.
> Or has Zend_Filter_Input been changed in 1.5?
The only changes to ZFI that I'm aware of are:
* Now uses Zend_Loader_PluginLoader for loading validators and filters
(which allows developers to create their own implementations of
standard validators and filters)
* Addition of I18N capabilities (via Zend_Validate_Abstract)
--
Matthew Weier O'Phinney
PHP Developer | [EMAIL PROTECTED]
Zend - The PHP Company | http://www.zend.com/
