nodereference_autocomplete_validate($element, &$form_state)
contributions/cck/modules/nodereference/nodereference.module, line 609
Validate an autocomplete element.
Remove the wrapper layer and set the right element's value. This will move the nested value at 'field-name-0-nid-nid' back to its original location, 'field-name-0-nid'.
<?php
function nodereference_autocomplete_validate($element, &$form_state) {
$field_name = $element['#field_name'];
$type_name = $element['#type_name'];
$field = content_fields($field_name, $type_name);
$field_key = $element['#columns'][0];
$delta = $element['#delta'];
$value = $element['#value'][$field_key];
$nid = NULL;
if (!empty($value)) {
preg_match('/^(?:\s*|(.*) )?\[\s*nid\s*:\s*(\d+)\s*\]$/', $value, $matches);
if (!empty($matches)) {
// Explicit [nid:n].
list(, $title, $nid) = $matches;
if (!empty($title) && ($n = node_load($nid)) && $title != $n->title) {
form_error($element[$field_key], t('%name: title mismatch. Please check your selection.', array('%name' => t($field['widget']['label']))));
}
}
else {
// No explicit nid.
$nids = _nodereference_potential_references($field, $value, TRUE);
if (empty($nids)) {
form_error($element[$field_key], t('%name: found no valid post with that title.', array('%name' => t($field['widget']['label']))));
}
else {
// TODO:
// the best thing would be to present the user with an additional form,
// allowing the user to choose between valid candidates with the same title
// ATM, we pick the first matching candidate...
$nid = array_shift(array_keys($nids));
}
}
}
form_set_value($element, $nid, $form_state);
return $element;
}
?>