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Using Drupal 8/9. When trying to view previous revisions I am getting the following error:

Error: Call to a member function getType() on string in clc_d8_theme_theme_suggestions_page_alter() (line 13 of /var/www/html/wrc/web/themes/clc_d8_theme/clc_d8_theme.theme)

It refers to this code:

function clc_d8_theme_theme_suggestions_page_alter(array &$suggestions, array $variables) { // Add content type suggestions. if ($node = \Drupal::request()->attributes->get('node')) { array_splice($suggestions, 1, 0, 'page__node__' . $node->getType()); <-- error at this line } }

I need the type suggestions for my theme. How do I fix this? I thought the check on the node would be enough to avoid issues.

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1 Answer 1

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"$node" can vary a bit by context, but here are some ways to set $node:

$routeName = \Drupal::routeMatch()->getRouteName(); $node = NULL; // $variables['node']. if (isset($variables['node'])) { $node = $variables['node']; if (is_numeric($variables['node'])) { $node = \Drupal::entityTypeManager()->getStorage('node')->load($variables['node']); } } // $variables['row']. if (isset($variables['row']) && !empty($variables['row']->nid)) { $node = \Drupal::entityTypeManager()->getStorage('node')->load($variables['row']->nid); } // $routeName === 'entity.node.canonical'. if ($routeName === 'entity.node.canonical') { $node = \Drupal::routeMatch()->getParameter('node'); } // $routeName === 'entity.node.revision'. if ($routeName === 'entity.node.revision') { $revisionId = \Drupal::routeMatch()->getParameter('node_revision')->getRevisionId(); $node = node_revision_load($revisionId); } // $routeName === 'entity.node.preview'. if ($routeName === 'entity.node.preview') { $node = \Drupal::routeMatch()->getParameter('node_preview'); } if ($node) { // run your code... }

Specifically, it looks like you're after:

// Get route name. $routeName = \Drupal::routeMatch()->getRouteName(); // Check if route is node revision. if ($routeName === 'entity.node.revision') { $revisionId = \Drupal::routeMatch()->getParameter('node_revision')->getRevisionId(); $node = node_revision_load($revisionId); }

This will fully load your node object and ->getType() should work without error.

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