function taxonomy_breadcrumb_taxonomy in Taxonomy Breadcrumb 6

Same name and namespace in other branches

1. 5 taxonomy_breadcrumb.module \taxonomy_breadcrumb_taxonomy()
2. 7 taxonomy_breadcrumb.module \taxonomy_breadcrumb_taxonomy()

Implementation of hook_taxonomy(). This implementation checks to see if a vocabulary or term is being updated and makes the necessary changes in the taxonomy_breadcrumb database tables.

File

./taxonomy_breadcrumb.module, line 186

The taxonomy_breadcrumb module generates taxonomy based breadcrumbs on node pages and taxonomy/term pages. The breadcrumb trail takes on the form: [HOME] >> [VOCABULARY] >> TERM >> [TERM] ...

Code

function taxonomy_breadcrumb_taxonomy($op, $type, $object = NULL) {
  if ($type == 'vocabulary' || $type == 'term') {

    // Include the .inc file with all helper functions.
    include_once drupal_get_path('module', 'taxonomy_breadcrumb') . '/taxonomy_breadcrumb.inc';

    // Set variables to used in SQL query to reflect if vocabulary or term is being updated.
    if ($type == 'vocabulary') {
      $table = '{taxonomy_breadcrumb_vocabulary}';
      $key_type = 'vid';
      $old_path = _taxonomy_breadcrumb_get_vocabulary_path($object['vid']);
    }
    elseif ($type == 'term') {
      $table = '{taxonomy_breadcrumb_term}';
      $key_type = 'tid';
      $old_path = _taxonomy_breadcrumb_get_term_path($object['tid']);
    }
    $key = isset($object[$key_type]) ? $object[$key_type] : NULL;
    switch ($op) {
      case 'insert':
      case 'update':

        // If (after a vocabulary or term is updated)
        // called by module_invoke_all('taxonomy', 'update', 'term', $edit) in taxonomy.module.
        $new_path = isset($object['taxonomy_breadcrumb_path']) ? $object['taxonomy_breadcrumb_path'] : NULL;

        // Only modify database when the object has the 'taxonomy_breadcrumb_path' field
        if (!is_null($new_path)) {

          // Delete the record from taxonomy_breadcrumb_vocabulary or taxonomy_breadcrumb_term.
          if (drupal_strlen($new_path) == 0 && $old_path !== NULL) {
            db_query("DELETE FROM {$table} WHERE {$key_type} = %d", $key);
          }
          elseif (drupal_strlen($new_path) != 0 && $old_path != NULL) {
            db_query("UPDATE {$table} SET path = '%s' WHERE {$key_type} = %d", $new_path, $key);
          }
          elseif (drupal_strlen($new_path) != 0 && $old_path == NULL) {
            db_query("INSERT INTO {$table} ({$key_type}, path) VALUES (%d, '%s')", $key, $new_path);
          }
        }
        break;
      case 'delete':
        db_query("DELETE FROM {$table} WHERE {$key_type} = %d", $key);
        break;
    }
  }
}