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<?php
/**
* Usage example for HTML_QuickForm, using custom validation rules.
*
* @category HTML
* @package HTML_QuickForm
* @author Alexey Borzov <avb@php.net>
* @version CVS: $Id: rules-custom.php 236645 2007-05-29 19:12:26Z avb $
* @ignore
*/
require_once 'HTML/QuickForm.php';
require_once 'HTML/QuickForm/Rule.php';
/**
* Checks that a numeric value is within range
*
* @package HTML_QuickForm
* @ignore
*/
class RuleNumericRange extends HTML_QuickForm_Rule
{
function validate($value, $options)
{
if (isset($options['min']) && floatval($value) < $options['min']) {
return false;
}
if (isset($options['max']) && floatval($value) > $options['max']) {
return false;
}
return true;
}
function getValidationScript($options = null)
{
$jsCheck = array();
if (isset($options['min'])) {
$jsCheck[] = 'Number({jsVar}) >= ' . $options['min'];
}
if (isset($options['max'])) {
$jsCheck[] = 'Number({jsVar}) <= ' . $options['max'];
}
return array('', "{jsVar} != '' && !(" . implode(' && ', $jsCheck) . ')');
} // end func getValidationScript
}
// In case you are wondering, this checks whether there are too many
// CAPITAL LETTERS in the string
function countUpper($value, $limit = null)
{
if (empty($value)) {
return false;
}
if (!isset($limit)) {
$limit = 0.5;
}
$upper = array_filter(preg_split('//', $value, -1, PREG_SPLIT_NO_EMPTY), 'ctype_upper');
return (count($upper) / strlen($value)) <= $limit;
}
// BC thingie: it expects the first param to be element name
function countUpper_old($name, $value, $limit = null)
{
if (empty($value)) {
return false;
}
if (!isset($limit)) {
$limit = 0.5;
}
$upper = array_filter(preg_split('//', $value, -1, PREG_SPLIT_NO_EMPTY), 'ctype_upper');
return (count($upper) / strlen($value)) <= $limit;
}
$form =& new HTML_QuickForm('custom');
$form->addElement('header', null, 'Custom rule class');
// registering the custom rule class
$form->registerRule('numRange', null, 'RuleNumericRange');
$form->addElement('text', 'rNumber_1_10', 'The number (1-10):');
$form->addRule('rNumber_1_10', 'Enter number from 1 to 10', 'numRange', array('min' => 1, 'max' => 10), 'client');
// adding an instance of the custom rule class without registering
$form->addElement('text', 'rNonnegative', 'Nonnegative number:');
$form->addRule('rNonnegative', 'Enter nonnegative number', new RuleNumericRange(), array('min' => 0), 'client');
// adding a classname of the custom rule class without registering
$form->addElement('text', 'rNonpositive', 'Nonpositive number:');
$form->addRule('rNonpositive', 'Enter nonpositive number', 'RuleNumericRange', array('max' => 0), 'client');
$form->addElement('header', null, 'Using callbacks');
// using callback without registering
$form->addElement('text', 'rUpper_0_5', 'Some (preferrably lowercase) text:');
$form->addRule('rUpper_0_5', 'There are too many CAPITAL LETTERS', 'callback', 'countUpper');
// register with 'callback' type
$form->registerRule('upper', 'callback', 'countUpper');
$form->addElement('text', 'rUpper_0_25', 'Some (mostly lowercase) text:');
$form->addRule('rUpper_0_25', 'There are too many CAPITAL LETTERS', 'upper', 0.25);
// BC feature: register with 'function' type
$form->registerRule('upperOld', 'function', 'countUpper_old');
$form->addElement('text', 'rUpper_0', 'Some lowercase text:');
$form->addRule('rUpper_0', 'There are CAPITAL LETTERS, this is not allowed', 'upperOld', 0);
$form->addElement('submit', null, 'Send');
$form->applyFilter(array('rUpper_0_5', 'rUpper_0_25', 'rUpper_0'), 'trim');
$form->applyFilter(array('rNumber_1_10', 'rNonnegative', 'rNonpositive'), 'floatval');
$form->validate();
$form->display();
?>
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