Not loading $node->taxonomy when being themed

Do you have a separate node tpl file for that content type... Such as node-movie.tpl.php? If so, make sure the relevant code is there. If not, try making one, by copying your node.tpl.php file and naming it: node-custom-name-here.tpl.php Custom Name Here being the Machine Readable name of your Content Type.

I am readily assuming here though that you have more than one content type, and the taxonomy displays for the others...?

By any chance, do you have any other modules that are setting the $node->taxonomy value. It sounds like either this is being overwritten by another module or maybe by mistake during a conditional check or something.

The taxonomy load could be moved another hook_nodeapi('load',..) or hook_nodeapi('view', ..) as a temporary fix while the real problem is investigated further.

Just had a play with a new idea for a debugging tool, and I came up with the following class. It will only help is the call is deep in core, as it does kill the processing of the node, resulting in a 404/blank screen.

<?php

class node_wrapper {

  private $values = NULL;
  
  public function __construct($values) {
    $this->values = $values;
  }
  
  public function __set($name, $value) {
    if ($name == 'taxonomy') {
      $msg = '<pre>';
      $msg .=  'Setting ' . $name . ' to ' . print_r($value, TRUE);
      foreach(debug_backtrace() as $trace) {
        $msg .=  $trace['node_load'] . ' ' . $trace['line'] . ' '.  $trace['file'] . "\n" ;
      }
      $msg .=  '</pre>';
      drupal_set_message($msg);
    }
    $this->values->{$name} = $value;
  }
  
  public function __get($name) {
    return $this->values->{$name};
  }
}

?>

If you throw in this wrapper in before the line in node.module after the fetch object call, it may help track the problem.

<?php
function node_load($param = array(), $revision = NULL, $reset = NULL) {
  static $nodes = array();

  ......


  if ($revision) {
    array_unshift($arguments, $revision);
    $node = db_fetch_object(db_query('SELECT n.nid, r.vid, n.type, n.status, n.created, n.changed, n.comment, n.promote, n.sticky, r.timestamp AS revision_timestamp, r.title, r.body, r.teaser, r.log, r.format, u.uid, u.name, u.picture, u.data FROM {node} n INNER JOIN {users} u ON u.uid = n.uid INNER JOIN {node_revisions} r ON r.nid = n.nid AND r.vid = %d WHERE '. $cond, $arguments));
  }
  else {
    $node = db_fetch_object(db_query('SELECT n.nid, n.vid, n.type, n.status, n.created, n.changed, n.comment, n.promote, n.sticky, r.timestamp AS revision_timestamp, r.title, r.body, r.teaser, r.log, r.format, u.uid, u.name, u.picture, u.data FROM {node} n INNER JOIN {users} u ON u.uid = n.uid INNER JOIN {node_revisions} r ON r.vid = n.vid WHERE '. $cond, $arguments));
  }

  ############ adds debugging, bout line 590 in node.module ################
  $node = new node_wrapper($node);

  if ($node->nid) {
    // Call the node specific callback (if any) and piggy-back the
    // results to the node or overwrite some values.
    if ($extra = node_invoke($node, 'load')) {
      foreach ($extra as $key => $value) {
        $node->$key = $value;
      }
    }

....
?>

PS: I missed the vid/nid in the query while I was taking a quick look at the functions, sorry about that.

Was it a bug in one of the mainstream modules or a custom one?