public function php($data) { if (!parent::php($data)) { return false; } // Skip unsaved records if (!$this->record || !$this->record->exists()) { return true; } // Skip validation if not required if (empty($data['Required'])) { return; } // Skip validation if no rules $count = EditableCustomRule::get()->filter('ParentID', $this->record->ID)->count(); if ($count == 0) { return true; } // Both required = true and rules > 0 should error $this->validationError('Required_Error', _t("EditableFormFieldValidator.REQUIRED_ERROR", "Form fields cannot be required and have conditional display rules."), 'error'); return false; }