[support] Determine if comments have replies

[Cameron B. Prince]

After much trial and error (and temptation to edit comments.module), I was
able to figure out how to determine if comments have replies without
additional queries. Since the theme_preprocess_comment function runs per
comment and does not have access to the entire array of comments, the code
must be placed in theme_preprocess_node as follows:

function theme_preprocess_node(&$vars) {
  $keys = array_keys($vars['elements']['comments']['comments']);
  foreach ($keys as $k) {
    if (!is_numeric($k)) {
      continue;
    }
    $pid = $vars['elements']['comments']['comments'][$k]['#comment']->pid;
    
$vars['elements']['comments']['comments'][$pid]['#comment']->has_children =
!empty($pid);
    $last = $k;
  }
  $vars['elements']['comments']['comments'][$last]['#comment']->last = TRUE;
}

The last line before closing the function adds an additional flag ³last² to
the comments array on the final comment in the array.

Cameron


On 2/16/12 12:10 AM, "Cameron B. Prince" <cplists at teslauniverse.com> wrote:

> I have a need to determine if comments have replies. This is what I've come
> up with to make this determination, but I would rather find a way that
> doesn't require an additional database query per comment.
> 
> function theme_preprocess_comment(&$variables) {
>   $comment = $variables['elements']['#comment'];
>   $count = db_query('SELECT COUNT(*) FROM {comment} WHERE pid = :cid',
> array(':cid' => $comment->cid))->fetchField();
>   $comment->has_children = !empty($count);
> }
> 
> I can see that theme_preprocess_node has access to the entire array of
> comments in its $variables argument when displaying it with print_r. The
> issue is I can't seem to figure out how to loop over the comments so that I
> could check for a value in the pid field and add a has_children => TRUE to
> the parent comment's array.
> 
> Can someone point me in the right direction?
> 
> Thanks,
> cameronbprince
> 
> 

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