Sulu\Component\Content\Metadata\Loader\XmlLegacyLoader::loadTemplateAttributes PHP Method

    private function loadTemplateAttributes($resource, \DOMXPath $xpath, $type)
    {
        if ($type === 'page' || $type === 'home') {
            $result = ['key' => $this->getValueFromXPath('/x:template/x:key', $xpath), 'view' => $this->getValueFromXPath('/x:template/x:view', $xpath), 'controller' => $this->getValueFromXPath('/x:template/x:controller', $xpath), 'internal' => $this->getValueFromXPath('/x:template/x:internal', $xpath), 'cacheLifetime' => $this->loadCacheLifetime('/x:template/x:cacheLifetime', $xpath), 'tags' => $this->loadStructureTags('/x:template/x:tag', $xpath), 'meta' => $this->loadMeta('/x:template/x:meta/x:*', $xpath)];
            $result = array_filter($result, function ($value) {
                return $value !== null;
            });
            foreach (['key', 'view', 'controller', 'cacheLifetime'] as $requiredProperty) {
                if (!isset($result[$requiredProperty])) {
                    throw new InvalidXmlException($type, sprintf('Property "%s" is required in XML template file "%s"', $requiredProperty, $resource));
                }
            }
        } else {
            $result = ['key' => $this->getValueFromXPath('/x:template/x:key', $xpath), 'view' => $this->getValueFromXPath('/x:template/x:view', $xpath), 'controller' => $this->getValueFromXPath('/x:template/x:controller', $xpath), 'cacheLifetime' => $this->loadCacheLifetime('/x:template/x:cacheLifetime', $xpath), 'tags' => $this->loadStructureTags('/x:template/x:tag', $xpath), 'meta' => $this->loadMeta('/x:template/x:meta/x:*', $xpath)];
            $result = array_filter($result);
            if (count($result) < 1) {
                throw new InvalidXmlException($result['key']);
            }
        }
        return $result;
    }