hook_node_load

Act on nodes being loaded from the database.

This hook is invoked during node loading, which is handled by entity_load(), via classes NodeController and DrupalDefaultEntityController. After the node information is read from the database or the entity cache, hook_load() is invoked on the node's content type module, then field_attach_node_revision() or field_attach_load() is called, then hook_entity_load() is invoked on all implementing modules, and finally hook_node_load() is invoked on all implementing modules.

This hook should only be used to add information that is not in the node or node revisions table, not to replace information that is in these tables (which could interfere with the entity cache). For performance reasons, information for all available nodes should be loaded in a single query where possible.

The $types parameter allows for your module to have an early return (for efficiency) if your module only supports certain node types. However, if your module defines a content type, you can use hook_load() to respond to loading of just that content type.

Parameters

$nodes: An array of the nodes being loaded, keyed by nid.

$types: An array containing the types of the nodes.

For a detailed usage example, see nodeapi_example.module.

Related topics

Node API Hooks

Functions to define and modify content types.

Hooks

Allow modules to interact with the Drupal core.

7 functions implement hook_node_load()

File

modules/node/node.api.php, line 550

Hooks provided by the Node module.

Code

function hook_node_load($nodes, $types) {
  $result = db_query('SELECT nid, foo FROM {mytable} WHERE nid IN(:nids)', array(':nids' => array_keys($nodes)));
  foreach ($result as $record) {
    $nodes[$record->nid]->foo = $record->foo;
  }
}