function nodeorder_select_nodes in Node Order 7

Same name and namespace in other branches

1. 5 nodeorder.module \nodeorder_select_nodes()
2. 6 nodeorder.module \nodeorder_select_nodes()

NOTE: This is nearly a direct copy of taxonomy_select_nodes() -- see http://drupal.org/node/25801 if you find this sort of copy and paste upsetting...

Finds all nodes that match selected taxonomy conditions.

Parameters

$tids: An array of term IDs to match.

$operator: How to interpret multiple IDs in the array. Can be "or" or "and".

$depth: How many levels deep to traverse the taxonomy tree. Can be a nonnegative integer or "all".

$pager: Whether the nodes are to be used with a pager (the case on most Drupal pages) or not (in an XML feed, for example).

$order: The order clause for the query that retrieve the nodes.

$count: If $pager is TRUE, the number of nodes per page, or -1 to use the backward-compatible 'default_nodes_main' variable setting. If $pager is FALSE, the total number of nodes to select; or -1 to use the backward-compatible 'feed_default_items' variable setting; or 0 to select all nodes.

Return value

A resource identifier pointing to the query results.

1 call to nodeorder_select_nodes()

nodeorder_taxonomy_form_vocabulary_submit in ./nodeorder.module

Submit handler for nodeorder_form_taxonomy_form_vocabulary_alter().

File

./nodeorder.module, line 424

Nodeorder module.

Code

function nodeorder_select_nodes($tids = array(), $operator = 'or', $depth = 0, $pager = TRUE, $order = 'n.sticky DESC, n.created DESC', $count = -1) {
  if (count($tids) > 0) {

    // For each term ID, generate an array of descendant term IDs to the right depth.
    $descendant_tids = array();
    if ($depth === 'all') {
      $depth = NULL;
    }
    foreach ($tids as $index => $tid) {
      $term = taxonomy_term_load($tid);
      $tree = taxonomy_get_tree($term->vid, $tid, $depth);
      $descendant_tids[] = array_merge(array(
        $tid,
      ), array_map('_taxonomy_get_tid_from_term', $tree));
    }
    if ($operator == 'or') {
      $args = call_user_func_array('array_merge', $descendant_tids);
      $placeholders = db_placeholders($args, 'int');
      $sql = 'SELECT DISTINCT(n.nid), n.sticky, n.title, n.created, tn.weight FROM {node} n INNER JOIN {taxonomy_index} tn ON n.vid = tn.vid WHERE tn.tid IN (' . $placeholders . ') AND n.status = 1 ORDER BY ' . $order;
      $sql_count = 'SELECT COUNT(DISTINCT(n.nid)) FROM {node} n INNER JOIN {taxonomy_index} tn ON n.vid = tn.vid WHERE tn.tid IN (' . $placeholders . ') AND n.status = 1';
    }
    else {
      $joins = '';
      $wheres = '';
      $args = array();
      $query = db_select('node', 'n');
      $query
        ->condition('status', 1);
      foreach ($descendant_tids as $index => $tids) {
        $query
          ->join('taxonomy_index', "tn{$index}", "n.nid = tn{$index}.nid");
        $query
          ->condition("tn{$index}.tid", $tids, 'IN');
      }
      $query
        ->fields('n', array(
        'nid',
        'sticky',
        'title',
        'created',
      ));

      // @todo: distinct?
      $query
        ->fields('tn0', array(
        'weight',
      ));

      // @todo: ORDER BY ' . $order;

      //$sql_count = 'SELECT COUNT(DISTINCT(n.nid)) FROM {node} n ' . $joins . ' WHERE n.status = 1 ' . $wheres;
    }
    if ($pager) {
      if ($count == -1) {
        $count = variable_get('default_nodes_main', 10);
      }
      $result = pager_query($sql, $count, 0, $sql_count, $args);
    }
    else {
      if ($count == -1) {
        $count = variable_get('feed_default_items', 10);
      }
      if ($count == 0) {

        // TODO Please convert this statement to the D7 database API syntax.
        $result = $query
          ->execute();
      }
      else {

        // TODO Please convert this statement to the D7 database API syntax.
        $result = db_query_range($sql, $args);
      }
    }
  }
  return $result;
}