node aliased path as views contextual filter

Question

I want to have a view which would output a node title and use a contextual filter the aliased path of a node

/nodefilter?url=/category/path-to-article

I see there no php contextual filters in drupal 8 anymore do I have to write a custom contextual filter or is there another solution ? Any help will be greatly appreciated

Answer 1

First I have created a view that uses contextual filter content ID to filter the results by "node id" and can be called like this

/nodefilter/[NID]

After I made sure the view was working I modified the content ID contextual filter adding default query paramenter named url under WHEN THE FILTER VALUE IS NOT AVAILABLE > Provide default value

then in a custom module used the views api hook_views_pre_view as follows

use Drupal\views\ViewExecutable;
function MODULENAME_views_pre_view(ViewExecutable $view, $display_id, array &$args) {
  if($view->id() == 'view_machine_name'){
    $url = \Drupal::request()->query->get('url');
    $path = \Drupal::service('path.alias_manager')->getPathByAlias($url);
    if(preg_match('/node\/(\d+)/', $path, $matches)) {
      //$node = \Drupal\node\Entity\Node::load($matches[1]);
      //$nid = $matches[1];
      $args[0] = $matches[1];    
    }    
  }
}

Now the view works with NID or the url parameter

/nodefilter/[NID]
/nodefilter/?url=/category/path-to-article