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* @license GNU General Public License version 2 or later; see LICENSE.txt */ namespace Joomla\CMS\Form\Rule; \defined('JPATH_PLATFORM') or die; use Joomla\CMS\Form\Field\SubformField; use Joomla\CMS\Form\Form; use Joomla\CMS\Form\FormRule; use Joomla\Registry\Registry; /** * Form rule to validate subforms field-wise. * * @since 3.9.7 */ class SubformRule extends FormRule { /** * Method to test given values for a subform.. * * @param \SimpleXMLElement $element The SimpleXMLElement object representing the `
` tag for the form field object. * @param mixed $value The form field value to validate. * @param string $group The field name group control value. This acts as as an array container for the field. * For example if the field has name="foo" and the group value is set to "bar" then the * full field name would end up being "bar[foo]". * @param Registry $input An optional Registry object with the entire data set to validate against the entire form. * @param Form $form The form object for which the field is being tested. * * @return boolean True if the value is valid, false otherwise. * * @since 3.9.7 */ public function test(\SimpleXMLElement $element, $value, $group = null, Registry $input = null, Form $form = null) { // Get the form field object. $field = $form->getField($element['name'], $group); if (!($field instanceof SubformField)) { throw new \UnexpectedValueException(sprintf('%s is no subform field.', $element['name'])); } if ($value === null) { return true; } $subForm = $field->loadSubForm(); // Multiple values: Validate every row. if ($field->multiple) { foreach ($value as $row) { if ($subForm->validate($row) === false) { // Pass the first error that occurred on the subform validation. $errors = $subForm->getErrors(); if (!empty($errors[0])) { return $errors[0]; } return false; } } } // Single value. else { if ($subForm->validate($value) === false) { // Pass the first error that occurred on the subform validation. $errors = $subForm->getErrors(); if (!empty($errors[0])) { return $errors[0]; } return false; } } return true; } }