dyh_ChtGptDrplMrkDwnLnkFltr

Clarifications: This is about ChatGpt assisted creation of Drupal's 'Markdown Link Filter'
ChatGPT Direction
Folder/file structure

• folder structure: DrupalSiteRoot/modules/modules/custom/PrjctNm/src/Plugin/Filter
• files
  • DrupalSiteRoot/modules/modules/custom/PrjctNm/mrk_dwn_lnk_fltr.info.yml
    • module/project description file

    name: 'mrk_dwn_lnk_fltr'
type: module
description: 'Converts Markdown links to wiki creation links for missing pages.'
core_version_requirement: ^8 || ^9 || ^10
package: Custom
dependencies:
- filter


  • DrupalSiteRoot/modules/modules/custom/PrjctNm/src/Plugin/Filter/mrk_dwn_lnk_fltr.php
    • the code/implementation

    // simple worked version
<?php

    namespace Drupal\mrk_dwn_lnk_fltr\Plugin\Filter;

    use Drupal\filter\FilterProcessResult;
    use Drupal\filter\Plugin\FilterBase;
    use Drupal\Core\Form\FormStateInterface;
    use Drupal\filter\Annotation\Filter;

    /**
    * @Filter(
    * id = "mrk_dwn_lnk_fltr",
    * title = @Translation("MarkDown Link Filter"),
    * description = @Translation("Convert Markdown links to wiki creation links if the node does not exist."),
    * type = Drupal\filter\Plugin\FilterInterface::TYPE_MARKUP_LANGUAGE,
    * )
    */
    class mrk_dwn_lnk_fltr extends FilterBase {

    /**
    * {@inheritdoc}
    */
    public function process($text, $langcode) {
    $result = $text;

    // Regex to match Markdown links: [Text](Title)
    $pattern = '/\[(.*?)\]\((.*?)\)/';

    \Drupal::logger('me')->debug('before user call');
    $user = \Drupal::currentUser();
    \Drupal::logger('me')->debug('after user call');
    \Drupal::logger('me')->notice('Current user: uid=@uid name=@name roles=@roles', [
    '@uid' => $user->id(),
    '@name' => $user->getDisplayName(),
    '@roles' => implode(', ', $user->getRoles()),
    ]);

    $content_type = 'wiki'; // adjust as needed

    $result = 'user|'.$content_type.'|'.$result;

    $result0 = preg_replace_callback($pattern, function($matches) use ($user, $content_type) {
    $link_text = $matches[1];
    $link_target = $matches[2];

    \Drupal::logger('me')->debug('CntntTyp='.$content_type);
    \Drupal::logger('me')->debug('LnkTxt='.$link_text);
    \Drupal::logger('me')->debug('LnkTrgtp='.$link_target);

    // Check if node with title exists
    $query = \Drupal::entityTypeManager()->getStorage('node')->getQuery()
    ->accessCheck(FALSE) // do not check permission
    ->condition('title', $link_target) // query condition
    ->condition('type', $content_type) // :
    ->range(0, 1); // first 0 or 1 record
    $nids = $query->execute(); // obtain node id info
    \Drupal::logger('me')->debug('nids='.var_dump($nids));

    if (!empty($nids)) {
// Node exists, return normal link
return $matches[0];
} else {
// Node does not exist. Check if user can create
$node_access = \Drupal::entityTypeManager()->getStorage('node')->create(['type' => $content_type]);
if ($user->hasPermission('create ' . $content_type . ' content')) {
// Return Markdown link to node/add page + emoji
$create_url = '/node/add/' . $content_type . '?edit[title]=' . urlencode($link_target);
return '[' . $link_text . '](' . $create_url . ') ✨';
}
else {
// Node does not exist, user cannot create: just return normal text
return $link_text;
}
}
}, $text);
\Drupal::logger('me')->debug($result0);
return new FilterProcessResult($result0);
}
}


    • see also C:\_DH\_Prsnl\_Cds\_ClPhp\_DrplRltd\WikiFltr\wikiFltr.php

Enable module

• -Admin -Extend -List -custom -mrk_dwn_lnk_fltr = x
• -Install

Configure

• -Admin -Configuration -Content authoring -Text formats and editors -select format(e.g. Markdown)
• -Enabled filter -MarkDown Link Filter = x
• -set Filter processing order = move 'MarkDown Link Filter' to top
• Save configuration