compound_viewer.module

<?php

/**
 * @file
 * Contains compound_viewer.module.
 */

use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\views\Views;

/**
 * Implements hook_help().
 */
function compound_viewer_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    // Main module help for the compound_viewer module.
    case 'help.page.compound_viewer':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Compound Viewer Utils') . '</p>';
      return $output;

    default:
  }
}

/**
 * Implements hook_views_pre_view().
 */
function compound_viewer_views_pre_view($view, string $display_id, array $args) {

  // If the playlist media view is being rendered
  if (($view->id() === 'playlist_item_media') && ($display_id === 'block_1')) {

    // Get the current node
    $node = \Drupal::routeMatch()->getParameter('node');
    $nid = $node->id();

    // Get the compound view
    $view_children = Views::getView('compound_object_members');
    $view_children->setDisplay('block_1');
    $view_children->setArguments([$nid]);
    $view_children->execute();

    $view_result = $view_children->result;

    // Get the first member node id of the compound object
    $node_id = "";
    if (!empty($view_result)) {
      foreach ($view_result as $row) {
        $node_id = $row->nid;
        break;
      }
    }

    // Set the default node when first going to the compound object
    $exposed_input = $view->getExposedInput();
    $current_uri = \Drupal::request()->getRequestUri();

    if (!str_contains($current_uri, 'compound_member_node_id')) {
      $exposed_input['compound_member_node_id'] = $node_id;
      $view->setExposedInput($exposed_input);
    }

    $view->element['#attached']['library'][] = 'compound_viewer/compound_viewer.exposed_filter';

  }
}