Drupal → Как добавить контент к ноде перед её выводом

/**
 * Implements of hook_node_view().
 */
function MODULENAME_node_view($node, $view_mode, $langcode) {
  if ($node->type == 'article' && $view_mode == 'full') {
    $node->content['mycontent'] = array(
      '#markup' => 'My node content', 
      '#weight' => 10, 
    );
  }
}

/**
 * Preprocess function for node.tpl.php
 */
function THEMENAME_preprocess_node(&$vars) {
  if ($vars['node']->type == 'article' && $vars['page']) {
    $vars['content']['mycontent'] = array(
      '#markup' => 'My node content', 
      '#weight' => 10, 
    );
  }
}

/**
 * Implements of hook_nodeapi().
 */
function MODULENAME_nodeapi(&$node, $op, $a3 = NULL, $a4 = NULL) {
  if ($node->type == 'article' && $op == 'view' && $a4) {
    $node->content['mycontent'] = array(
      '#value' => 'My node content', 
      '#weight' => 10, 
    );
  }
}

/**
 * Preprocess function for node.tpl.php
 */
function THEMENAME_preprocess_node(&$vars) {
  if ($vars['node']->type == 'article' && $vars['page']) {
    $vars['content'] .= 'My node content';
  }
}