PHP code example of fabianmichael / kirby-meta

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

fabianmichael / kirby-meta example snippets

<!doctype html>
<html>
<head>
   snippet('meta') 

class ArticlePage extends Page {
  public function metaDefaults(?string $lang = null): array {
       return [
            'meta_title' => null,
            'meta_canonical_url' => null,
            'meta_description' => null,

            'sitemap_priority' => null,
            'sitemap_changefreq' => null,

            'robots_index' => null,
            'robots_follow' => null,
            'robots_archive' => null,
            'robots_imageindex' => null,
            'robots_snippet' => null,
            'robots_translate' => null,

            'og_title' => null,
            'og_description' => null,
            'og_image' => null,

            '@graph' => [],
            '@social' => [],

            'lastmod' => null, // unix timestamp expected
        ];
    },
}

class LegalPage extends Page {
  public function metaOverrides(?string $lang = null): array
  {
    return [
      'robots_index' => false, // this will disble the robots index setting in the panel and always exclude this page from being indexed.
    ];
  }
}

return [
  'meta.jsonld:after' => function (
    array $json,
    FabianMichael\Meta\PageMeta $meta,
    Kirby\Cms\Page $page
  ) {
    // add breadcrumb to JSON-LD graph
    $items = [];

    $parents = $page->parents();

    if ($parents->count() === 0) {
      return $json;
    }

    $i = 0;

    foreach ($parents->flip() as $parent) {
      $items[] = [
        '@type' => 'ListItem',
        'position' => ++$i,
        'item' => [
          '@id' => $parent->url(),
          'name' => $parent->title()->toString(),
        ],
      ];
    }

    $json['@graph'][] = [
      '@type' => 'BreadcrumbList',
      'itemListElement' => $items,
    ];

    return $json;
  },
];

return [
  'meta.social:after' => function (
    array $social,
    FabianMichael\Meta\PageMeta $meta,
    Kirby\Cms\Page $page
  ) {
    // add first video file of page to OpenGraph markup
    if ($page->hasVideos()) {
      $social[] = [
        'property' => 'og:video',
        'content'  => $page->videos()->first()->url(),
      ];
    }
    return $social;
  },
];

return [
  'hooks' => [
    'meta.sitemap:before' => function (
      Kirby $kirby,
      DOMDocument $doc,
      DOMElement $root
    ) {
      // add namespace for image sitemap
      $root->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:image', 'http://www.google.com/schemas/sitemap-image/1.1');
    },

    'meta.sitemap.url' => function (
      Kirby $kirby,
      Page $page,
      PageMeta $meta,
      DOMDocument $doc,
      DOMElement $url) {

      if ($page->images()->count() === 0) {
        // dynamically exclude page from the sitemap
        return false;
      }

      foreach ($page->images() as $image) {
        // add all images from page to image sitemap.
        $imageEl = $doc->createElement('image:image');
        $imageEl->appendChild($doc->createElement('image:loc', $image->url()));

        if ($image->alt()->isNotEmpty()) {
          $imageEl->appendChild($doc->createElement('image:caption', $image->alt()));
        }

        $url->appendChild($imageEl);
      }
    },

    'meta.sitemap:after' => function (
      Kirby $kirby,
      DOMDocument $doc,
      DOMElement $root
    ) {
      foreach ($root->getElementsByTagName('url') as $url) {
        if ($lastmod = $url->getElementsByTagName('lastmod')[0] ?? null) {
          // remove lastmod date from sitemap entries for some reason …
          $url->removeChild($lastmod);
        }
      }
    },

    'meta.theme.color' => function (
      ?string $color
    ) {
      return '#ff0000';
    }
  ],
];