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Allow modules to alter metatags #18

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Allow modules to alter metatags #18

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17 changes: 12 additions & 5 deletions src/Plugin/GraphQL/Fields/Entity/EntityMetatags.php
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@

namespace Drupal\graphql_metatag\Plugin\GraphQL\Fields\Entity;

use Drupal\Component\Utility\NestedArray;
use Drupal\Core\DependencyInjection\DependencySerializationTrait;
use Drupal\Core\Entity\ContentEntityInterface;
use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
Expand Down Expand Up @@ -68,11 +69,17 @@ public function __construct(
*/
protected function resolveValues($value, array $args, ResolveContext $context, ResolveInfo $info) {
if ($value instanceof ContentEntityInterface) {
$tags = $this->metatagManager->tagsFromEntityWithDefaults($value);
$elements = $this->metatagManager->generateRawElements($tags, $value);

foreach ($elements as $element) {
yield $element;
$tags = metatag_get_tags_from_route($value);
// Trigger hook_metatags_attachments_alter().
// Allow modules to rendered metatags prior to attaching.
\Drupal::service('module_handler')->alter('metatags_attachments', $tags);
$tags = NestedArray::getValue($tags, ['#attached', 'html_head']) ?: [];
$tags = array_filter($tags, function ($tag) {
return is_array($tag) && in_array(NestedArray::getValue($tag, [0, '#tag']), ['meta', 'link']);
});
$tags = array_map('reset', $tags);
foreach ($tags as $tag) {
yield $tag;
}
}
}
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5 changes: 4 additions & 1 deletion src/Plugin/GraphQL/Fields/InternalUrl/Metatags.php
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Expand Up @@ -71,8 +71,11 @@ protected function resolveValues($value, array $args, ResolveContext $context, R
if ($value instanceof Url) {
$resolve = $this->subRequestBuffer->add($value, function () {
$tags = metatag_get_tags_from_route();
// Trigger hook_metatags_attachments_alter().
// Allow modules to rendered metatags prior to attaching.
\Drupal::service('module_handler')->alter('metatags_attachments', $tags);
$tags = NestedArray::getValue($tags, ['#attached', 'html_head']) ?: [];
$tags = array_filter($tags, function($tag) {
$tags = array_filter($tags, function ($tag) {
return is_array($tag) && in_array(NestedArray::getValue($tag, [0, '#tag']), ['meta', 'link']);
});

Expand Down