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<?php |
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declare(strict_types=1); |
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/* |
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* This file is part of the Sonata Project package. |
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* |
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* (c) Thomas Rabaix <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Sonata\SeoBundle\Twig\Extension; |
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use Sonata\SeoBundle\Seo\SeoPageInterface; |
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use Twig\Extension\AbstractExtension; |
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use Twig\TwigFunction; |
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final class SeoExtension extends AbstractExtension |
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{ |
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/** |
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* @var SeoPageInterface |
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*/ |
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protected $page; |
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/** |
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* @var string |
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*/ |
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protected $encoding; |
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/** |
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* @param string $encoding |
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*/ |
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public function __construct(SeoPageInterface $page, $encoding) |
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{ |
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$this->page = $page; |
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$this->encoding = $encoding; |
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} |
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public function getFunctions() |
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{ |
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return [ |
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new TwigFunction('sonata_seo_title', [$this, 'getTitle'], ['is_safe' => ['html']]), |
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new TwigFunction('sonata_seo_metadatas', [$this, 'getMetadatas'], ['is_safe' => ['html']]), |
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new TwigFunction('sonata_seo_html_attributes', [$this, 'getHtmlAttributes'], ['is_safe' => ['html']]), |
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new TwigFunction('sonata_seo_head_attributes', [$this, 'getHeadAttributes'], ['is_safe' => ['html']]), |
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new TwigFunction('sonata_seo_link_canonical', [$this, 'getLinkCanonical'], ['is_safe' => ['html']]), |
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new TwigFunction('sonata_seo_lang_alternates', [$this, 'getLangAlternates'], ['is_safe' => ['html']]), |
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new TwigFunction('sonata_seo_oembed_links', [$this, 'getOembedLinks'], ['is_safe' => ['html']]), |
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]; |
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} |
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public function getName() |
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{ |
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return 'sonata_seo'; |
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} |
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/** |
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* @return string |
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*/ |
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public function getTitle() |
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{ |
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return sprintf('<title>%s</title>', strip_tags($this->page->getTitle())); |
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} |
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/** |
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* @return string |
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*/ |
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public function getMetadatas() |
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{ |
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$html = ''; |
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foreach ($this->page->getMetas() as $type => $metas) { |
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foreach ((array) $metas as $name => $meta) { |
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list($content, $extras) = $meta; |
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if (!empty($content)) { |
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$html .= sprintf( |
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"<meta %s=\"%s\" content=\"%s\" />\n", |
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$type, |
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$this->normalize($name), |
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$this->normalize($content) |
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); |
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} else { |
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$html .= sprintf( |
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"<meta %s=\"%s\" />\n", |
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$type, |
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$this->normalize($name) |
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); |
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} |
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} |
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} |
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return $html; |
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} |
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/** |
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* @return string |
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*/ |
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public function getHtmlAttributes() |
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{ |
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$attributes = ''; |
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foreach ($this->page->getHtmlAttributes() as $name => $value) { |
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$attributes .= sprintf('%s="%s" ', $name, $value); |
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} |
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return rtrim($attributes); |
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} |
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/** |
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* @return string |
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*/ |
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public function getHeadAttributes() |
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{ |
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$attributes = ''; |
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foreach ($this->page->getHeadAttributes() as $name => $value) { |
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$attributes .= sprintf('%s="%s" ', $name, $value); |
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} |
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return rtrim($attributes); |
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} |
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/** |
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* @return string |
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*/ |
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public function getLinkCanonical() |
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{ |
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if ($this->page->getLinkCanonical()) { |
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return sprintf("<link rel=\"canonical\" href=\"%s\"/>\n", $this->page->getLinkCanonical()); |
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} |
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} |
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/** |
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* @return string |
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*/ |
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public function getLangAlternates() |
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{ |
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$html = ''; |
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foreach ($this->page->getLangAlternates() as $href => $hrefLang) { |
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$html .= sprintf("<link rel=\"alternate\" href=\"%s\" hreflang=\"%s\"/>\n", $href, $hrefLang); |
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} |
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return $html; |
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} |
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/** |
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* @return string |
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*/ |
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public function getOembedLinks() |
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{ |
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$html = ''; |
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foreach ($this->page->getOEmbedLinks() as $title => $link) { |
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$html .= sprintf("<link rel=\"alternate\" type=\"application/json+oembed\" href=\"%s\" title=\"%s\" />\n", $link, $title); |
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} |
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return $html; |
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} |
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/** |
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* @param string $string |
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* |
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* @return mixed |
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*/ |
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private function normalize($string) |
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{ |
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return htmlentities(strip_tags((string) $string), ENT_COMPAT, $this->encoding); |
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} |
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} |
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sonata-project /
SonataSeoBundle
This checks looks for assignemnts to variables using the
list(...)function, where not all assigned variables are subsequently used.Consider the following code example.
Only the variables
$aand$care used. There was no need to assign$b.Instead, the list call could have been.