function forum_node_validate

Implements hook_node_validate().

Checks in particular that the node is assigned only a "leaf" term in the forum taxonomy.

File

modules/forum/forum.module, line 291

Code

function forum_node_validate($node, $form) {
    if (_forum_node_check_node_type($node)) {
        $langcode = $form['taxonomy_forums']['#language'];
        // vocabulary is selected, not a "container" term.
        if (!empty($node->taxonomy_forums[$langcode])) {
            // Extract the node's proper topic ID.
            $containers = variable_get('forum_containers', array());
            foreach ($node->taxonomy_forums[$langcode] as $delta => $item) {
                // If no term was selected (e.g. when no terms exist yet), remove the
                // item.
                if (empty($item['tid'])) {
                    unset($node->taxonomy_forums[$langcode][$delta]);
                    continue;
                }
                $term = taxonomy_term_load($item['tid']);
                if (!$term) {
                    form_set_error('taxonomy_forums', t('Select a forum.'));
                    continue;
                }
                $used = db_query_range('SELECT 1 FROM {taxonomy_term_data} WHERE tid = :tid AND vid = :vid', 0, 1, array(
                    ':tid' => $term->tid,
                    ':vid' => $term->vid,
                ))
                    ->fetchField();
                if ($used && in_array($term->tid, $containers)) {
                    form_set_error('taxonomy_forums', t('The item %forum is a forum container, not a forum. Select one of the forums below instead.', array(
                        '%forum' => $term->name,
                    )));
                }
            }
        }
    }
}