HTML_QuickForm::addRule()
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HTML_QuickForm::addRule()

HTML_QuickForm::addRule() – Adds a validation rule for the given field

Synopsis

require_once 'HTML/QuickForm.php';

void HTML_QuickForm::addRule ( mixed $element , string $message , string $type , string $format = '' , string $validation = 'server' , boolean $reset = false , boolean $force = false )

Description

If the element is in fact a group, it will be considered as a whole, an array of group elements' values will be passed to validation function. To validate grouped elements as separate entities, use addGroupRule().

Parameter

mixed $element

Form element name(s). Currently the only builtin rule that expects and correctly handles an array here is compare:


<?php
$form->addElement('password', 'cmpPasswd', 'Password:');
$form->addElement('password', 'cmpRepeat', 'Repeat password:');
$form->addRule(array('cmpPasswd', 'cmpRepeat'), 'The passwords do not match', 'compare', null, 'client');
?>

All other builtin rules will only handle a single element name. callback rules can also handle an array here, but the callback function you provide will obviously need to properly handle an array of values.

string $message: Message to display for invalid data

string $type: Rule type, use getRegisteredRules() to get types. You can also pass a classname for a descendant of HTML_QuickForm_Rule or an instance of such class.

string $format: (optional) Required for extra rule data

string $validation: (optional) Where to perform validation: "server", "client"

boolean $reset: For client-side validation: reset the form element to its original value if there is an error?

boolean $force: Force the rule to be applied, even if the target form element does not exist

Throws

Possible PEAR_Error values
Error code	Error message	Reason	Solution
QUICKFORM_NONEXIST_ELEMENT	Element '`$element`' does not exist in HTML_QuickForm::addRule()	Tried to add a rule for a non-existant element	Check the element's name spelling or use `$force` to suppress the error.
QUICKFORM_INVALID_RULE	Rule '`$type`' is not registered in HTML_QuickForm::addRule()	Rule is not known to QuickForm	Check rule type spelling or use HTML_QuickForm::registerRule().

Note

since 1.0

This function can not be called statically.

Prev	Validation and filters	Next
Introduction - validation and filters	PEAR Manual	HTML_QuickForm::addGroupRule()