Club Drupal

<?php

/**

 * @file

 * A dummy module implementing node access related hooks for testing purposes.

 *

 * A dummy module implementing node access related hooks to test API interaction

 * with the Node module. This module restricts view permission to those with

 * a special 'node test view' permission.

 */

/**

 * Implements hook_node_grants().

 */

function node_access_test_node_grants($account, $op) {

  $grants = array();

  // First grant a grant to the author for own content.

  $grants['node_access_test_author'] = array($account->uid);

  if ($op == 'view' && user_access('node test view', $account)) {

    $grants['node_access_test'] = array(8888, 8889);

  }

  if ($op == 'view' && $account->uid == variable_get('node_test_node_access_all_uid', 0)) {

    $grants['node_access_all'] = array(0);

  }

  return $grants;

}

/**

 * Implements hook_node_access_records().

 */

function node_access_test_node_access_records($node) {

  $grants = array();

  // For NodeAccessBaseTableTestCase, only set records for private nodes.

  if (!variable_get('node_access_test_private') || $node->private) {

    $grants[] = array(

      'realm' => 'node_access_test',

      'gid' => 8888,

      'grant_view' => 1,

      'grant_update' => 0,

      'grant_delete' => 0,

      'priority' => 0,

    );

    $grants[] = array(

      'realm' => 'node_access_test',

      'gid' => 8889,

      'grant_view' => 1,

      'grant_update' => 0,

      'grant_delete' => 0,

      'priority' => 0,

    );

    // For the author realm, the GID is equivalent to a UID, which

    // means there are many many groups of just 1 user.

    $grants[] = array(

      'realm' => 'node_access_test_author',

      'gid' => $node->uid,

      'grant_view' => 1,

      'grant_update' => 1,

      'grant_delete' => 1,

      'priority' => 0,

    );

  }

  return $grants;

}

/**

 * Implements hook_permission().

 *

 * Sets up permissions for this module.

 */

function node_access_test_permission() {

  return array('node test view' => array('title' => 'View content'));

}

/**

 * Implements hook_menu().

 *

 * Sets up a page that lists nodes.

 */

function node_access_test_menu() {

  $items = array();

  $items['node_access_test_page'] = array(

    'title' => 'Node access test',

    'page callback' => 'node_access_test_page',

    'access arguments' => array('access content'),

    'type' => MENU_SUGGESTED_ITEM,

  );

  $items['node_access_entity_test_page'] = array(

    'title' => 'Node access test',

    'page callback' => 'node_access_entity_test_page',

    'access arguments' => array('access content'),

    'type' => MENU_SUGGESTED_ITEM,

  );

  return $items;

}

/**

 * Page callback for node access test page.

 *

 * Page should say "No nodes" if there are no nodes, and "Yes, # nodes" (with

 * the number filled in) if there were nodes the user could access. Also, the

 * database query is shown, and a list of the node IDs, for debugging purposes.

 * And if there is a query exception, the page says "Exception" and gives the

 * error.

 */

function node_access_test_page() {

  $output = '';

  try {

    $query = db_select('node', 'mytab')

      ->fields('mytab');

    $query->addTag('node_access');

    $result = $query->execute()->fetchAll();

    if (count($result)) {

      $output .= '<p>Yes, ' . count($result) . ' nodes</p>';

      $output .= '<ul>';

      foreach ($result as $item) {

        $output .= '<li>' . $item->nid . '</li>';

      }

      $output .= '</ul>';

    }

    else {

      $output .= '<p>No nodes</p>';

    }

    $output .= '<p>' . ((string) $query ) . '</p>';

  }

  catch (Exception $e) {

    $output = '<p>Exception</p>';

    $output .= '<p>' . $e->getMessage() . '</p>';

  }

  return $output;

}

/**

 * Page callback for node access entity test page.

 *

 * Page should say "No nodes" if there are no nodes, and "Yes, # nodes" (with

 * the number filled in) if there were nodes the user could access. Also, the

 * database query is shown, and a list of the node IDs, for debugging purposes.

 * And if there is a query exception, the page says "Exception" and gives the

 * error.

 *

 * @see node_access_test_menu()

 */

function node_access_entity_test_page() {

  $output = '';

  try {

    $query = new EntityFieldQuery;

    $result = $query->fieldCondition('body', 'value', 'A', 'STARTS_WITH')->execute();

    if (!empty($result['node'])) {

      $output .= '<p>Yes, ' . count($result['node']) . ' nodes</p>';

      $output .= '<ul>';

      foreach ($result['node'] as $nid => $v) {

        $output .= '<li>' . $nid . '</li>';

      }

      $output .= '</ul>';

    }

    else {

      $output .= '<p>No nodes</p>';

    }

  }

  catch (Exception $e) {

    $output = '<p>Exception</p>';

    $output .= '<p>' . $e->getMessage() . '</p>';

  }

  return $output;

}

/**

 * Implements hook_form_BASE_FORM_ID_alter().

 */

function node_access_test_form_node_form_alter(&$form, $form_state) {

  // Only show this checkbox for NodeAccessBaseTableTestCase.

  if (variable_get('node_access_test_private')) {

    $form['private'] = array(

      '#type' => 'checkbox',

      '#title' => t('Private'),

      '#description' => t('Check here if this content should be set private and only shown to privileged users.'),

      '#default_value' => isset($form['#node']->private) ? $form['#node']->private : FALSE,

    );

  }

}

/**

 * Implements hook_node_load().

 */

function node_access_test_node_load($nodes, $types) {

  $result = db_query('SELECT nid, private FROM {node_access_test} WHERE nid IN(:nids)', array(':nids' => array_keys($nodes)));

  foreach ($result as $record) {

    $nodes[$record->nid]->private = $record->private;

  }

}

/**

 * Implements hook_node_delete().

 */

function node_access_test_node_delete($node) {

  db_delete('node_access_test')->condition('nid', $node->nid)->execute();

}

/**

 * Implements hook_node_insert().

 */

function node_access_test_node_insert($node) {

  _node_access_test_node_write($node);

}

/**

 * Implements hook_node_update().

 */

function node_access_test_node_update($node) {

  _node_access_test_node_write($node);

}

/**

 * Helper for node insert/update.

 */

function _node_access_test_node_write($node) {

  if (isset($node->private)) {

    db_merge('node_access_test')

      ->key(array('nid' => $node->nid))

      ->fields(array('private' => (int) $node->private))

      ->execute();

  }

}