/**
* If current form was submitted, validate and save it
*
* Note: This callback can abort script execution if save does redirect
*
* @return bool|null
* @internal
*/
public function _validate_and_save()
{
if ($this->validate_and_save_called) {
trigger_error(__METHOD__ . ' already called', E_USER_WARNING);
return null;
} else {
$this->validate_and_save_called = true;
}
if (!$this->is_submitted()) {
return null;
}
$this->validate();
if ($this->is_ajax()) {
$json_data = array();
if ($this->is_valid()) {
$json_data['save_data'] = $this->save();
} else {
$json_data['errors'] = $this->get_errors();
}
$flash_messages = array();
foreach (FW_Flash_Messages::_get_messages(true) as $type => $messages) {
$flash_messages[$type] = array();
foreach ($messages as $id => $message_data) {
$flash_messages[$type][$id] = $message_data['message'];
}
}
$json_data['flash_messages'] = $flash_messages;
/**
* Important!
* We can't send form html in response:
*
* ob_start();
* $this->render();
* $json_data['html'] = ob_get_clean();
*
* because the render() method is not called within this class
* but by the code that created and owns the $form,
* and it's usually called with some custom data $this->render(array(...))
* that it's impossible to know here which data is that.
* If we will call $this->render(); without data, this may throw errors because
* the render callback may expect some custom data.
* Also it may be called or not, depending on the owner code inner logic.
*
* The only way to get the latest form html on ajax submit
* is to make a new ajax GET to current page and extract form html from the response.
*/
if ($this->is_valid()) {
wp_send_json_success($json_data);
} else {
wp_send_json_error($json_data);
}
} else {
if (!$this->is_valid()) {
return false;
}
$this->save();
}
return true;
}
