function googleanalytics_page_alter in Google Analytics 7.2
Same name and namespace in other branches
- 7 googleanalytics.module \googleanalytics_page_alter()
Implements hook_page_alter() to insert JavaScript to the appropriate scope/region of the page.
File
- ./
googleanalytics.module, line 100 - Drupal Module: Google Analytics
Code
function googleanalytics_page_alter(&$page) {
global $base_path, $user;
$id = variable_get('googleanalytics_account', '');
// Get page status code for visibility filtering.
$status = drupal_get_http_header('Status');
$trackable_status_codes = array(
'403 Forbidden',
'404 Not Found',
);
// 1. Check if the GA account number has a valid value.
// 2. Track page views based on visibility value.
// 3. Check if we should track the currently active user's role.
// 4. Ignore pages visibility filter for 404 or 403 status codes.
if (preg_match('/^UA-\\d+-\\d+$/', $id) && (_googleanalytics_visibility_pages() || in_array($status, $trackable_status_codes)) && _googleanalytics_visibility_user($user)) {
$debug = variable_get('googleanalytics_debug', 0);
$url_custom = '';
// Add link tracking.
$link_settings = array();
if ($track_outbound = variable_get('googleanalytics_trackoutbound', 1)) {
$link_settings['trackOutbound'] = $track_outbound;
}
if ($track_mailto = variable_get('googleanalytics_trackmailto', 1)) {
$link_settings['trackMailto'] = $track_mailto;
}
if (($track_download = variable_get('googleanalytics_trackfiles', 1)) && ($trackfiles_extensions = variable_get('googleanalytics_trackfiles_extensions', GOOGLEANALYTICS_TRACKFILES_EXTENSIONS))) {
$link_settings['trackDownload'] = $track_download;
$link_settings['trackDownloadExtensions'] = $trackfiles_extensions;
}
if (module_exists('colorbox') && ($track_colorbox = variable_get('googleanalytics_trackcolorbox', 1))) {
$link_settings['trackColorbox'] = $track_colorbox;
}
if ($track_domain_mode = variable_get('googleanalytics_domain_mode', 0)) {
$link_settings['trackDomainMode'] = (int) $track_domain_mode;
}
if ($track_cross_domains = variable_get('googleanalytics_cross_domains', '')) {
$link_settings['trackCrossDomains'] = preg_split('/(\\r\\n?|\\n)/', $track_cross_domains);
}
if ($track_url_fragments = variable_get('googleanalytics_trackurlfragments', 0)) {
$link_settings['trackUrlFragments'] = $track_url_fragments;
$url_custom = 'location.pathname + location.search + location.hash';
}
if (!empty($link_settings)) {
drupal_add_js(array(
'googleanalytics' => $link_settings,
), 'setting');
// Add debugging code.
if ($debug) {
drupal_add_js(drupal_get_path('module', 'googleanalytics') . '/googleanalytics.debug.js');
// Add the JS test in development to the page.
//drupal_add_js(drupal_get_path('module', 'googleanalytics') . '/googleanalytics.test.js');
}
else {
drupal_add_js(drupal_get_path('module', 'googleanalytics') . '/googleanalytics.js');
}
}
// Add messages tracking.
$message_events = '';
if ($message_types = variable_get('googleanalytics_trackmessages', array())) {
$message_types = array_values(array_filter($message_types));
$status_heading = array(
'status' => t('Status message'),
'warning' => t('Warning message'),
'error' => t('Error message'),
);
foreach (drupal_get_messages(NULL, FALSE) as $type => $messages) {
// Track only the selected message types.
if (in_array($type, $message_types)) {
foreach ($messages as $message) {
// @todo: Track as exceptions?
$message_events .= 'ga("send", "event", ' . drupal_json_encode(t('Messages')) . ', ' . drupal_json_encode($status_heading[$type]) . ', ' . drupal_json_encode(strip_tags($message)) . ');';
}
}
}
}
// Site search tracking support.
if (module_exists('search') && variable_get('googleanalytics_site_search', FALSE) && arg(0) == 'search' && ($keys = googleanalytics_search_get_keys())) {
// hook_preprocess_search_results() is not executed if search result is
// empty. Make sure the counter is set to 0 if there are no results.
$url_custom = '(window.googleanalytics_search_results) ? ' . drupal_json_encode(url('search/' . arg(1), array(
'query' => array(
'search' => $keys,
),
))) . ' : ' . drupal_json_encode(url('search/' . arg(1), array(
'query' => array(
'search' => 'no-results:' . $keys,
'cat' => 'no-results',
),
)));
}
// If this node is a translation of another node, pass the original
// node instead.
if (module_exists('translation') && variable_get('googleanalytics_translation_set', 0)) {
// Check we have a node object, it supports translation, and its
// translated node ID (tnid) doesn't match its own node ID.
$node = menu_get_object();
if ($node && translation_supported_type($node->type) && !empty($node->tnid) && $node->tnid != $node->nid) {
$source_node = node_load($node->tnid);
$languages = language_list();
$url_custom = drupal_json_encode(url('node/' . $source_node->nid, array(
'language' => $languages[$source_node->language],
)));
}
}
// Track access denied (403) and file not found (404) pages.
if ($status == '403 Forbidden') {
// See https://www.google.com/support/analytics/bin/answer.py?answer=86927
$url_custom = '"' . $base_path . '403.html?page=" + document.location.pathname + document.location.search + "&from=" + document.referrer';
}
elseif ($status == '404 Not Found') {
$url_custom = '"' . $base_path . '404.html?page=" + document.location.pathname + document.location.search + "&from=" + document.referrer';
}
// #2693595: User has entered an invalid login and clicked on forgot
// password link. This link contains the username or email address and may
// get send to Google if we do not override it. Override only if 'name'
// query param exists. Last custom url condition, this need to win.
//
// URLs to protect are:
// - user/password?name=username
// - user/password?name=foo@example.com
if (arg(0) == 'user' && arg(1) == 'password' && array_key_exists('name', drupal_get_query_parameters())) {
$url_custom = '"' . $base_path . 'user/password"';
}
// Add custom dimensions and metrics.
$custom_var = '';
foreach (array(
'dimension',
'metric',
) as $googleanalytics_custom_type) {
$googleanalytics_custom_vars = variable_get('googleanalytics_custom_' . $googleanalytics_custom_type, array());
// Are there dimensions or metrics configured?
if (!empty($googleanalytics_custom_vars)) {
// Add all the configured variables to the content.
foreach ($googleanalytics_custom_vars as $googleanalytics_custom_var) {
// Replace tokens in values.
$types = array();
$node = menu_get_object();
if (is_object($node)) {
$types += array(
'node' => $node,
);
}
$googleanalytics_custom_var['value'] = token_replace($googleanalytics_custom_var['value'], $types, array(
'clear' => TRUE,
));
// Suppress empty values.
if (!drupal_strlen(trim($googleanalytics_custom_var['value']))) {
continue;
}
// Per documentation the max length of a dimension is 150 bytes.
// A metric has no length limitation. It's not documented if this
// limit means 150 bytes after url encoding or before.
// See https://developers.google.com/analytics/devguides/collection/analyticsjs/field-reference#customs
if ($googleanalytics_custom_type == 'dimension' && drupal_strlen($googleanalytics_custom_var['value']) > 150) {
$googleanalytics_custom_var['value'] = substr($googleanalytics_custom_var['value'], 0, 150);
}
// Cast metric values for json_encode to data type numeric.
if ($googleanalytics_custom_type == 'metric') {
settype($googleanalytics_custom_var['value'], 'float');
}
// Add variables to tracker.
$custom_var .= 'ga("set", ' . drupal_json_encode($googleanalytics_custom_type . $googleanalytics_custom_var['index']) . ', ' . drupal_json_encode($googleanalytics_custom_var['value']) . ');';
}
}
}
// Build tracker code.
$script = '(function(i,s,o,g,r,a,m){';
$script .= 'i["GoogleAnalyticsObject"]=r;i[r]=i[r]||function(){';
$script .= '(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),';
$script .= 'm=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)';
$script .= '})(window,document,"script",';
// Which version of the tracking library should be used?
$library_tracker_url = 'https://www.google-analytics.com/' . ($debug ? 'analytics_debug.js' : 'analytics.js');
// Should a local cached copy of analytics.js be used?
if (variable_get('googleanalytics_cache', 0) && ($url = _googleanalytics_cache($library_tracker_url))) {
// A dummy query-string is added to filenames, to gain control over
// browser-caching. The string changes on every update or full cache
// flush, forcing browsers to load a new copy of the files, as the
// URL changed.
$query_string = '?' . variable_get('css_js_query_string', '0');
$script .= '"' . $url . $query_string . '"';
}
else {
$script .= '"' . $library_tracker_url . '"';
}
$script .= ',"ga");';
// Add any custom code snippets if specified.
$codesnippet_create = variable_get('googleanalytics_codesnippet_create', array());
$codesnippet_before = variable_get('googleanalytics_codesnippet_before', '');
$codesnippet_after = variable_get('googleanalytics_codesnippet_after', '');
// Build the create only fields list.
$create_only_fields = array(
'cookieDomain' => 'auto',
);
$create_only_fields = array_merge($create_only_fields, $codesnippet_create);
// Domain tracking type.
global $cookie_domain;
$domain_mode = variable_get('googleanalytics_domain_mode', 0);
$googleanalytics_adsense_script = '';
// Per RFC 2109, cookie domains must contain at least one dot other than the
// first. For hosts such as 'localhost' or IP Addresses we don't set a cookie domain.
if ($domain_mode == 1 && count(explode('.', $cookie_domain)) > 2 && !is_numeric(str_replace('.', '', $cookie_domain))) {
$create_only_fields = array_merge($create_only_fields, array(
'cookieDomain' => $cookie_domain,
));
$googleanalytics_adsense_script .= 'window.google_analytics_domain_name = ' . drupal_json_encode($cookie_domain) . ';';
}
elseif ($domain_mode == 2) {
// Cross Domain tracking. 'autoLinker' need to be enabled in 'create'.
$create_only_fields = array_merge($create_only_fields, array(
'allowLinker' => TRUE,
));
$googleanalytics_adsense_script .= 'window.google_analytics_domain_name = "none";';
}
// Track logged in users across all devices.
if (variable_get('googleanalytics_trackuserid', 0) && user_is_logged_in()) {
$create_only_fields['userId'] = google_analytics_user_id_hash($user->uid);
}
// Create a tracker.
$script .= 'ga("create", ' . drupal_json_encode($id) . ', ' . drupal_json_encode($create_only_fields) . ');';
// Prepare Adsense tracking.
$googleanalytics_adsense_script .= 'window.google_analytics_uacct = ' . drupal_json_encode($id) . ';';
// Add enhanced link attribution after 'create', but before 'pageview' send.
// @see https://support.google.com/analytics/answer/2558867
if (variable_get('googleanalytics_tracklinkid', 0)) {
$script .= 'ga("require", "linkid", "linkid.js");';
}
// Add display features after 'create', but before 'pageview' send.
// @see https://support.google.com/analytics/answer/2444872
if (variable_get('googleanalytics_trackdoubleclick', 0)) {
$script .= 'ga("require", "displayfeatures");';
}
// Domain tracking type.
if ($domain_mode == 2) {
// Cross Domain tracking
// https://developers.google.com/analytics/devguides/collection/upgrade/reference/gajs-analyticsjs#cross-domain
$script .= 'ga("require", "linker");';
$script .= 'ga("linker:autoLink", ' . drupal_json_encode($link_settings['trackCrossDomains']) . ');';
}
if (variable_get('googleanalytics_tracker_anonymizeip', 1)) {
$script .= 'ga("set", "anonymizeIp", true);';
}
if (!empty($custom_var)) {
$script .= $custom_var;
}
if (!empty($codesnippet_before)) {
$script .= $codesnippet_before;
}
if (!empty($url_custom)) {
$script .= 'ga("set", "page", ' . $url_custom . ');';
}
$script .= 'ga("send", "pageview");';
if (!empty($message_events)) {
$script .= $message_events;
}
if (!empty($codesnippet_after)) {
$script .= $codesnippet_after;
}
if (variable_get('googleanalytics_trackadsense', FALSE)) {
// Custom tracking. Prepend before all other JavaScript.
// @TODO: https://support.google.com/adsense/answer/98142
// sounds like it could be appended to $script.
drupal_add_js($googleanalytics_adsense_script, array(
'type' => 'inline',
'group' => JS_LIBRARY - 1,
'requires_jquery' => FALSE,
));
}
drupal_add_js($script, array(
'scope' => 'header',
'type' => 'inline',
'requires_jquery' => FALSE,
));
}
}