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Drupal example source code file (tracker.install)

This example Drupal source code file (tracker.install) is included in the DevDaily.com "Drupal Source Code Warehouse" project. The intent of this project is to help you "Learn Drupal by Example".

PHP - Drupal tags/keywords

array, changed, default, description, int, nid, node, not, null, or, the, true, type

The tracker.install Drupal example source code

<?php
// $Id: tracker.install,v 1.6 2011/01/02 17:26:39 webchick Exp $

/**
 * Implements hook_uninstall().
 */
function tracker_uninstall() {
  variable_del('tracker_index_nid');
  variable_del('tracker_batch_size');
}

/**
 * Implements hook_enable().
 */
function tracker_enable() {
  $max_nid = db_query('SELECT MAX(nid) FROM {node}')->fetchField();
  if ($max_nid != 0) {
    variable_set('tracker_index_nid', $max_nid);
    // To avoid timing out while attempting to do a complete indexing, we
    // simply call our cron job to remove stale records and begin the process.
    tracker_cron();
  }
}

/**
 * Implements hook_schema().
 */
function tracker_schema() {
  $schema['tracker_node'] = array(
    'description' => 'Tracks when nodes were last changed or commented on.',
    'fields' => array(
      'nid' => array(
        'description' => 'The {node}.nid this record tracks.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
      'published' => array(
        'description' => 'Boolean indicating whether the node is published.',
        'type' => 'int',
        'not null' => FALSE,
        'default' => 0,
        'size' => 'tiny',
      ),
      'changed' => array(
        'description' => 'The Unix timestamp when the node was most recently saved or commented on.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
    ),
    'indexes' => array(
      'tracker' => array('published', 'changed'),
    ),
    'primary key' => array('nid'),
    'foreign keys' => array(
      'tracked_node' => array(
        'table' => 'node',
        'columns' => array('nid' => 'nid'),
      ),
    ),
  );

  $schema['tracker_user'] = array(
    'description' => 'Tracks when nodes were last changed or commented on, for each user that authored the node or one of its comments.',
    'fields' => array(
      'nid' => array(
        'description' => 'The {node}.nid this record tracks.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
      'uid' => array(
        'description' => 'The {users}.uid of the node author or commenter.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
      ),
      'published' => array(
        'description' => 'Boolean indicating whether the node is published.',
        'type' => 'int',
        'not null' => FALSE,
        'default' => 0,
        'size' => 'tiny',
      ),
      'changed' => array(
        'description' => 'The Unix timestamp when the node was most recently saved or commented on.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
    ),
    'indexes' => array(
      'tracker' => array('uid', 'published', 'changed'),
    ),
    'primary key' => array('nid', 'uid'),
    'foreign keys' => array(
      'tracked_node' => array(
        'table' => 'node',
        'columns' => array('nid' => 'nid'),
      ),
      'tracked_user' => array(
        'table' => 'users',
        'columns' => array('uid' => 'uid'),
      ),
    ),
  );

  return $schema;
}

/**
 * @addtogroup updates-6.x-to-7.x
 * @{
 */

/**
 * Create new tracker_node and tracker_user tables.
 */
function tracker_update_7000() {
  $schema['tracker_node'] = array(
    'description' => 'Tracks when nodes were last changed or commented on',
    'fields' => array(
      'nid' => array(
        'description' => 'The {node}.nid this record tracks.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
      'published' => array(
        'description' => 'Boolean indicating whether the node is published.',
        'type' => 'int',
        'not null' => FALSE,
        'default' => 0,
        'size' => 'tiny',
      ),
      'changed' => array(
        'description' => 'The Unix timestamp when the node was most recently saved or commented on.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
    ),
    'indexes' => array(
      'tracker' => array('published', 'changed'),
    ),
    'primary key' => array('nid'),
    'foreign keys' => array(
      'tracked_node' => array(
        'table' => 'node',
        'columns' => array('nid' => 'nid'),
      ),
    ),
  );

  $schema['tracker_user'] = array(
    'description' => 'Tracks when nodes were last changed or commented on, for each user that authored the node or one of its comments.',
    'fields' => array(
      'nid' => array(
        'description' => 'The {node}.nid this record tracks.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
      'uid' => array(
        'description' => 'The {users}.uid of the node author or commenter.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
      ),
      'published' => array(
        'description' => 'Boolean indicating whether the node is published.',
        'type' => 'int',
        'not null' => FALSE,
        'default' => 0,
        'size' => 'tiny',
      ),
      'changed' => array(
        'description' => 'The Unix timestamp when the node was most recently saved or commented on.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
    ),
    'indexes' => array(
      'tracker' => array('uid', 'published', 'changed'),
    ),
    'primary key' => array('nid', 'uid'),
    'foreign keys' => array(
      'tracked_node' => array(
        'table' => 'node',
        'columns' => array('nid' => 'nid'),
      ),
      'tracked_user' => array(
        'table' => 'users',
        'columns' => array('uid' => 'uid'),
      ),
    ),
  );

  foreach ($schema as $name => $table) {
    db_create_table($name, $table);
  }

  $max_nid = db_query('SELECT MAX(nid) FROM {node}')->fetchField();
  if ($max_nid != 0) {
    variable_set('tracker_index_nid', $max_nid);
  }
}

/**
 * @} End of "addtogroup updates-6.x-to-7.x"
 */

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