Here is a quick code snippet that enables you to add your own custom validation to a CCK node type form.
<?php
function MYMODULE_form_alter($form_id, &$form) {
// create a list of node types that require custom validation
$nodeTypes = array(
'MYNODETYPE1',
'MYNODETYPE2',
);
// check if the form id is a node form, and if it exists in the above array
if (substr($form_id,-10)=='_node_form' && in_array(substr($form_id, 0, strlen($form_id)-10), $nodeTypes)) {
$form['#validate'] = array_merge(array('_MYMODULE_node_form_validate' => array()), $form['#validate']);
}
}
function _MYMODULE_node_form_validate($form_id, $form_values, $form)
{
// DEBUG: use print_r($form_values) to see what has been submitted
// TODO: check for errors here, and use form_set_error() as necessary
// for example:
if ($form_values['MYFIELD'][0]['value'] == 'SOMETHING NAUGHTY') {
form_set_error('MYFIELD', 'MY CUSTOM ERROR MESSAGE');
}
}
?>
Another solution
Another solution would be to use MYMODULE_nodeapi()
function mkfj_nodeapi(&$node, $op, $a3 = NULL, $a4 = NULL) {switch($op) {
//action=validate
case 'validate':
$form = $a3;
switch($node->type) {
//node type=MYTYPE
case 'MYTYPE':
if ( preg_match("BADWORDS", $form["field_name"][0]['value'] ) ) form_set_error("field_name", t("Message"));
//...
break;
}
break;
}
}
Cheers,
Jan
D6 version
Great code, could you help me to release code for drupal 6 version ??
thanks before