Containers and topics not showing

Are you talking about /forum?

I am not sure what you are asking. If I go to /forum it does list the forums and containers but the topics and posts are all given as 0.
If I go to a forum from there it lists containers but not any topics. If I then go to a container it does not list any topics.
In short, topics are not being listed. Topics are being saved as nodes.

The topics and posts are drawn from the forum index table and comment-statistics for the comment_forum field.

Can you see if you have records in the comment_statistics database table for that field name, and matching records (using vid) in the forum table?

I am not sure what I am looking for. I don't seem to have a comment_statistics table, only comment_entity_statistics. The forum tables seem to be empty.

Might be simpler to jump in a call next week

Things to check

- does your forum node-type have a field on it called taxonomy_forums?
- what is configured in forum.settings for the vocabulary - you can check this by using the single item export from admin/config/development/config or using drush with `drush cget forum.settings`
-

- /admin/structure/types/manage/forum/fields has a field with the label Forums and machine name taxonomy_forums
-

drush cget forum.settings
_core:
  default_config_hash: QIfZpz4g6BfEIyiL-WtauNYu31M8o3LvYlZ0VGRQtNo
block:
  active:
    limit: 5
  new:
    limit: 5
topics:
  hot_threshold: 15
  order: 1
  page_limit: 25
vocabulary: forums

Ok, that all looks correct 🤔

So I wonder why you're not getting records in the forum/forum_index table - that is where this data is read from.

Was this a new site or a site that was migrated from an earlier version of Drupal?

The site was migrated from Drupal 7 to Drupal 10 and then updated to Drupal 11. The forum module in Drupal 7 did not seem to be in use, it was listed as not installed. I have not intended to migrate any of the forum content from Drupal 7. I have uninstalled and reinstalled the forum module in Drupal 10 (core module) and again in Drupal 11 (contributed module).

Not sure why I marked this RTBC 😄

I think we're kind of at the point now where we might need to jump on a call to work out why you're not getting data in the forum/forum_index tables. Will send you an email with some possible times.

Here's the logic of how things should work:

• /forum and /forum/{tid} are built by taking the taxonomy ID and querying the forum_index table to find records
• the forum_index table is written to from node hooks as follows:
  • forum_node_presave runs and sets the forum_id property on the node based on the value in the taxonomy_forums field
  • forum_node_update or forum_node_insert run depending on whether the node is new or not. Both of these start by checking that the node has a field named taxonomy_forums and then if forum_tid is set call the forum index storage server to keep the records in both the forum and forum_index tables up to date

If you have access to a debugger, you may be able to step through this and see where it is failing.

One thing that might be an issue here is that your field-map might be corrupt - which would cause the 'does the taxonomy_forums' field exist on the forum node type to fail.

You could check that with drush if you have it

drush php-eval "echo (\array_key_exists('taxonomy_forums', \Drupal::service('entity_field.manager')->getFieldDefinitions('node', 'forum')) ? 'Field exists in field map' : 'No forums field in field map') . \PHP_EOL;"

Thanks, that helps.
The result of the drush command was that the field exists.