render_cache_node.module in Render cache 7

Hijacks node_show router path to enable entity_view caching.

File

modules/render_cache_node/render_cache_node.module

<?php

/**
 * @file
 * Hijacks node_show router path to enable entity_view caching.
 */

/**
 * Implements hook_menu_alter().
 *
 * @param array[] $items
 */
function render_cache_node_menu_alter(&$items) {

  // Use a custom callback for node/% to use entity_view caching().
  $items['node/%node']['page callback'] = 'render_cache_node_node_show';
}

/**
 * Overrides node_show().
 *
 * This uses entity_view() instead of node_view_multiple to enable
 * entity_view() render caching.
 *
 * @param object $node
 * @param bool $message
 *   A flag which sets a page title relevant to the revision being viewed.
 *
 * @return array
 *   A Drupal render array.
 *
 * @see node_show()
 */
function render_cache_node_node_show($node, $message = FALSE) {

  // Do not cache if there is a message.
  if ($message) {
    return node_view($node, $message);
  }

  // Use entity_view to display this node potentially cached.
  // entity_view() is almost compatible to node_view_multiple().
  // just the key is different ('node' vs 'nodes').
  $nodes = entity_view('node', array(
    $node->nid => $node,
  ), 'full');

  // Update the history table, stating that this user viewed this node.
  node_tag_new($node);

  // Re-key the array key here to be compatible to normal node_show().
  if (isset($nodes['node'])) {
    return array(
      'nodes' => $nodes['node'],
    );
  }
  return $nodes;
}

Functions

Name	Description
render_cache_node_menu_alter	Implements hook_menu_alter().
render_cache_node_node_show	Overrides node_show().