function acf_validate_value($value, $field, $input)
{
// vars
$valid = true;
$message = sprintf(__('%s value is required', 'acf'), $field['label']);
// valid
if ($field['required']) {
// valid is set to false if the value is empty, but allow 0 as a valid value
if (empty($value) && !is_numeric($value)) {
$valid = false;
}
}
// filter for 3rd party customization
$valid = apply_filters("acf/validate_value", $valid, $value, $field, $input);
$valid = apply_filters("acf/validate_value/type={$field['type']}", $valid, $value, $field, $input);
$valid = apply_filters("acf/validate_value/name={$field['name']}", $valid, $value, $field, $input);
$valid = apply_filters("acf/validate_value/key={$field['key']}", $valid, $value, $field, $input);
// allow $valid to be a custom error message
if (!empty($valid) && is_string($valid)) {
$message = $valid;
$valid = false;
}
if (!$valid) {
acf_add_validation_error($input, $message);
return false;
}
// return
return true;
}
function validate_save_post()
{
// register field if isset in $_POST
foreach ($this->fields as $k => $field) {
// bail early if no in $_POST
if (!isset($_POST['acf'][$k])) {
continue;
}
// register
acf_add_local_field($field);
}
// honeypot
if (!empty($_POST['acf']['_validate_email'])) {
acf_add_validation_error('', __('Spam Detected', 'acf'));
}
}
function _validate_save_post()
{
// save post_title
if (isset($_POST['acf']['_post_title'])) {
// get field
$field = acf_get_valid_field(array('name' => '_post_title', 'label' => 'Title', 'type' => 'text', 'required' => true));
// validate
acf_validate_value($_POST['acf']['_post_title'], $field, "acf[_post_title]");
}
// honeypot
if (!empty($_POST['acf']['_validate_email'])) {
acf_add_validation_error('', __('Spam Detected', 'acf'));
}
}
function _acf_form_validate_save_post()
{
// honeypot
if (!empty($_POST['acf']['_validate_email'])) {
acf_add_validation_error('', __('Spam Detected', 'acf'));
}
}
