user-defined custom validation php javascript js
user-defined (custom) validation
Though the best way to define custom validation types is to simply extend Clonefish using your own validator class (feel free to explore the validators for examples!), a simple 'drop in' validator is also available in Clonefish. This one is used to get an element validated using JS or PHP expressions, which is a very quick and easy solution actually.
- You can define a PHP and a JS expression or both, where can use placeholders like
<FORM.fieldname>as shortcuts to elements. - In the PHP expression you can also access
$this->formwhich is the Clonefish object or$this->elementwhich is the element holding the custom validator. - Please note that you can only use one error message for each validator (when you create an own validator class, you can return any error message depending on the type of problems encountered)
<?php
$config = Array(
'element' => Array(
'type' => 'inputFile',
// ...further element settings here...
'validation' => Array(
Array(
'type' => 'custom',
'php' => 'strlen( <FORM.fieldname> ) > 0', // php expression
'js' => '<FORM.fieldname>.length > 0', // javascript expression
'help' => 'Help message value for this validator only'
)
)
)
);
?>
Live examples:
form validation for developers!
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