/**
* Validates a field.
*
* @param \FormFieldModel $formField
* @param int $step
*
* @return bool
*/
public function validateField(\FormFieldModel $formField, $step)
{
$class = $GLOBALS['TL_FFL'][$formField->type];
if (!class_exists($class)) {
return true;
}
/** @var \Widget $widget */
$widget = new $class($formField->row());
$widget->required = $formField->mandatory ? true : false;
// Needed for the hook
$form = $this->createDummyForm();
// HOOK: load form field callback
if (isset($GLOBALS['TL_HOOKS']['loadFormField']) && is_array($GLOBALS['TL_HOOKS']['loadFormField'])) {
foreach ($GLOBALS['TL_HOOKS']['loadFormField'] as $callback) {
$objCallback = \System::importStatic($callback[0]);
$widget = $objCallback->{$callback[1]}($widget, $this->getFormId(), $this->formModel->row(), $form);
}
}
// Validation (needs to set POST values because the widget class searches
// only in POST values :-(
// This should only happen if value is not currently submitted and if
// the value is neither submitted in POST nor in the session, we have
// to default it to an empty string so the widget validates for mandatory
// fields
$fakeValidation = false;
if (!isset($_POST[$widget->name])) {
if ($this->isStoredInData($widget->name, $step)) {
$value = $this->fetchFromData($widget->name, $step);
} else {
$value = '';
}
\Input::setPost($formField->name, $value);
$fakeValidation = true;
}
$widget->validate();
// Reset fake validation
if ($fakeValidation) {
\Input::setPost($formField->name, null);
}
// Special hack for upload fields because they delete $_FILES and thus
// multiple validation calls will fail - sigh
if ($widget instanceof \uploadable && isset($_SESSION['FILES'][$widget->name])) {
$_FILES[$widget->name] = $_SESSION['FILES'][$widget->name];
}
// HOOK: validate form field callback
if (isset($GLOBALS['TL_HOOKS']['validateFormField']) && is_array($GLOBALS['TL_HOOKS']['validateFormField'])) {
foreach ($GLOBALS['TL_HOOKS']['validateFormField'] as $callback) {
$objCallback = \System::importStatic($callback[0]);
$widget = $objCallback->{$callback[1]}($widget, $this->getFormId(), $this->formModel->row(), $form);
}
}
return !$widget->hasErrors();
}