location_user.module

<?php

/**
 * @file
 * Associate locations with users.
 */

function location_user_perm() {
  return array(
    'administer user locations',
    'set own user location',
    'view own user location',
    'view all user locations',
  );
}

/**
 * Alter the user_admin_settings form.
 */
function location_user_form_user_admin_settings_alter(&$form, &$form_state) {
  if (isset($form_state['values']['location_settings_user'])) {
    $settings = $form_state['values']['location_settings_user'];
  }
  else {
    $settings = variable_get('location_settings_user', array());
  }

  $form['location_settings_user'] = location_settings($settings);
  $form['location_settings_user']['#title'] = t('User locations');

  $form['location_settings_user']['form']['register'] = array(
    '#type' => 'checkbox',
    '#title' => t('Collect during registration'),
    '#default_value' => isset($settings['form']['register']) ? $settings['form']['register'] : FALSE,
    '#weight' => -5,
  );
}

/**
 * Implementation of hook_user().
 */
function location_user_user($op, &$edit, &$account, $category = NULL) {
  global $user;

  switch ($op) {
    case 'load':
      $account->locations = location_load_locations($account->uid, 'uid');
      $account->location = count($account->locations) ? $account->locations[0] : array();
      break;

    case 'insert':
    case 'update':
      if (!empty($edit['locations'])) {
        location_save_locations($edit['locations'], array('uid' => $account->uid));
      }
      unset($edit['locations']);
      break;

    case 'delete':
      $locations = array();
      location_save_locations($locations, array('uid' => $account->uid));
      break;

    case 'form':
      if ($category == 'account') {
        if ((($user->uid == $account->uid) && user_access('set own user location')) || user_access('administer user locations')) {
          $settings = variable_get('location_settings_user', array());
          $form['locations'] = location_form($settings, $account->locations);
          return $form;
        }
      }
      break;

    case 'register':
      $settings = variable_get('location_settings_user', array());
      if (isset($settings['form']['register']) && $settings['form']['register']) {
        $form['locations'] = location_form($settings, array());
        return $form;
      }
      break;

    case 'view':
      if ((($user->uid == $account->uid) && user_access('view own user location')) || user_access('administer users') || user_access('view all user locations') || user_access('administer user locations')) {
        if (variable_get('location_display_location', 1) && isset($account->locations) && count($account->locations)) {
          $settings = variable_get('location_settings_user', array());
          $account->content['locations'] = location_display($settings, $account->locations);
        }
      }
      break;
  }
}

/**
 * Implementation of hook_locationapi().
 */
function location_user_locationapi(&$obj, $op, $a3 = NULL, $a4 = NULL, $a5 = NULL) {
  switch ($op) {
    case 'instance_links':
      foreach ($obj as $k => $v) {
        if ($v['uid'] != 0) {
          $account = user_load(array('uid' => $v['uid']));
          $obj[$k]['href'] = 'user/'. $v['uid'];
          $obj[$k]['title'] = $account->name;
          $obj[$k]['type'] = t('User location');
        }
      }
  }
}