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drupalcampbristol/web/core/modules/statistics/statistics.module
2018-11-23 12:29:20 +00:00

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<?php
/**
* @file
* Logs and displays content statistics for a site.
*/
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Entity\Display\EntityViewDisplayInterface;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Url;
use Drupal\node\NodeInterface;
use Drupal\statistics\StatisticsViewsResult;
/**
* Implements hook_help().
*/
function statistics_help($route_name, RouteMatchInterface $route_match) {
switch ($route_name) {
case 'help.page.statistics':
$output = '';
$output .= '<h3>' . t('About') . '</h3>';
$output .= '<p>' . t('The Statistics module shows you how often content is viewed. This is useful in determining which pages of your site are most popular. For more information, see the <a href=":statistics_do">online documentation for the Statistics module</a>.', [':statistics_do' => 'https://www.drupal.org/documentation/modules/statistics/']) . '</p>';
$output .= '<h3>' . t('Uses') . '</h3>';
$output .= '<dl>';
$output .= '<dt>' . t('Displaying popular content') . '</dt>';
$output .= '<dd>' . t('The module includes a <em>Popular content</em> block that displays the most viewed pages today and for all time, and the last content viewed. To use the block, enable <em>Count content views</em> on the <a href=":statistics-settings">Statistics page</a>, and then you can enable and configure the block on the <a href=":blocks">Block layout page</a>.', [':statistics-settings' => \Drupal::url('statistics.settings'), ':blocks' => (\Drupal::moduleHandler()->moduleExists('block')) ? \Drupal::url('block.admin_display') : '#']) . '</dd>';
$output .= '<dt>' . t('Page view counter') . '</dt>';
$output .= '<dd>' . t('The Statistics module includes a counter for each page that increases whenever the page is viewed. To use the counter, enable <em>Count content views</em> on the <a href=":statistics-settings">Statistics page</a>, and set the necessary <a href=":permissions">permissions</a> (<em>View content hits</em>) so that the counter is visible to the users.', [':statistics-settings' => \Drupal::url('statistics.settings'), ':permissions' => \Drupal::url('user.admin_permissions', [], ['fragment' => 'module-statistics'])]) . '</dd>';
$output .= '</dl>';
return $output;
case 'statistics.settings':
return '<p>' . t('Settings for the statistical information that Drupal will keep about the site.') . '</p>';
}
}
/**
* Implements hook_ENTITY_TYPE_view() for node entities.
*/
function statistics_node_view(array &$build, EntityInterface $node, EntityViewDisplayInterface $display, $view_mode) {
if (!$node->isNew() && $view_mode == 'full' && node_is_page($node) && empty($node->in_preview)) {
$build['#attached']['library'][] = 'statistics/drupal.statistics';
$settings = ['data' => ['nid' => $node->id()], 'url' => \Drupal::request()->getBasePath() . '/' . drupal_get_path('module', 'statistics') . '/statistics.php'];
$build['#attached']['drupalSettings']['statistics'] = $settings;
}
}
/**
* Implements hook_node_links_alter().
*/
function statistics_node_links_alter(array &$links, NodeInterface $entity, array &$context) {
if ($context['view_mode'] != 'rss') {
$links['#cache']['contexts'][] = 'user.permissions';
if (\Drupal::currentUser()->hasPermission('view post access counter')) {
$statistics = \Drupal::service('statistics.storage.node')->fetchView($entity->id());
if ($statistics) {
$statistics_links['statistics_counter']['title'] = \Drupal::translation()->formatPlural($statistics->getTotalCount(), '1 view', '@count views');
$links['statistics'] = [
'#theme' => 'links__node__statistics',
'#links' => $statistics_links,
'#attributes' => ['class' => ['links', 'inline']],
];
}
$links['#cache']['max-age'] = \Drupal::config('statistics.settings')->get('display_max_age');
}
}
}
/**
* Implements hook_cron().
*/
function statistics_cron() {
$storage = \Drupal::service('statistics.storage.node');
$storage->resetDayCount();
$max_total_count = $storage->maxTotalCount();
\Drupal::state()->set('statistics.node_counter_scale', 1.0 / max(1.0, $max_total_count));
}
/**
* Returns the most viewed content of all time, today, or the last-viewed node.
*
* @param string $dbfield
* The database field to use, one of:
* - 'totalcount': Integer that shows the top viewed content of all time.
* - 'daycount': Integer that shows the top viewed content for today.
* - 'timestamp': Integer that shows only the last viewed node.
* @param int $dbrows
* The number of rows to be returned.
*
* @return SelectQuery|false
* A query result containing the node ID, title, user ID that owns the node,
* and the username for the selected node(s), or FALSE if the query could not
* be executed correctly.
*/
function statistics_title_list($dbfield, $dbrows) {
if (in_array($dbfield, ['totalcount', 'daycount', 'timestamp'])) {
$query = db_select('node_field_data', 'n');
$query->addTag('node_access');
$query->join('node_counter', 's', 'n.nid = s.nid');
$query->join('users_field_data', 'u', 'n.uid = u.uid');
return $query
->fields('n', ['nid', 'title'])
->fields('u', ['uid', 'name'])
->condition($dbfield, 0, '<>')
->condition('n.status', 1)
// @todo This should be actually filtering on the desired node status
// field language and just fall back to the default language.
->condition('n.default_langcode', 1)
->condition('u.default_langcode', 1)
->orderBy($dbfield, 'DESC')
->range(0, $dbrows)
->execute();
}
return FALSE;
}
/**
* Retrieves a node's "view statistics".
*
* @deprecated in Drupal 8.2.x, will be removed before Drupal 9.0.0.
* Use \Drupal::service('statistics.storage.node')->fetchView($id).
*/
function statistics_get($id) {
if ($id > 0) {
/** @var \Drupal\statistics\StatisticsViewsResult $statistics */
$statistics = \Drupal::service('statistics.storage.node')->fetchView($id);
// For backwards compatibility, return FALSE if an invalid node ID was
// passed in.
if (!($statistics instanceof StatisticsViewsResult)) {
return FALSE;
}
return [
'totalcount' => $statistics->getTotalCount(),
'daycount' => $statistics->getDayCount(),
'timestamp' => $statistics->getTimestamp(),
];
}
}
/**
* Implements hook_ENTITY_TYPE_predelete() for node entities.
*/
function statistics_node_predelete(EntityInterface $node) {
// Clean up statistics table when node is deleted.
$id = $node->id();
return \Drupal::service('statistics.storage.node')->deleteViews($id);
}
/**
* Implements hook_ranking().
*/
function statistics_ranking() {
if (\Drupal::config('statistics.settings')->get('count_content_views')) {
return [
'views' => [
'title' => t('Number of views'),
'join' => [
'type' => 'LEFT',
'table' => 'node_counter',
'alias' => 'node_counter',
'on' => 'node_counter.nid = i.sid',
],
// Inverse law that maps the highest view count on the site to 1 and 0
// to 0. Note that the ROUND here is necessary for PostgreSQL and SQLite
// in order to ensure that the :statistics_scale argument is treated as
// a numeric type, because the PostgreSQL PDO driver sometimes puts
// values in as strings instead of numbers in complex expressions like
// this.
'score' => '2.0 - 2.0 / (1.0 + node_counter.totalcount * (ROUND(:statistics_scale, 4)))',
'arguments' => [':statistics_scale' => \Drupal::state()->get('statistics.node_counter_scale') ?: 0],
],
];
}
}
/**
* Implements hook_preprocess_HOOK() for block templates.
*/
function statistics_preprocess_block(&$variables) {
if ($variables['configuration']['provider'] == 'statistics') {
$variables['attributes']['role'] = 'navigation';
}
}
/**
* Implements hook_block_alter().
*
* Removes the "popular" block from display if the module is not configured
* to count content views.
*/
function statistics_block_alter(&$definitions) {
$statistics_count_content_views = \Drupal::config('statistics.settings')->get('count_content_views');
if (empty($statistics_count_content_views)) {
unset($definitions['statistics_popular_block']);
}
}