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count-views.php
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count-views.php
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<?php
namespace Grav\Plugin;
use Grav\Common\Plugin;
use RocketTheme\Toolbox\Event\Event;
use RocketTheme\Toolbox\File\File;
use Symfony\Component\Yaml\Yaml;
/**
* Class CountViewsPlugin
* @package Grav\Plugin
*/
class CountViewsPlugin extends Plugin
{
/**
* @return array
*
* The getSubscribedEvents() gives the core a list of events
* that the plugin wants to listen to. The key of each
* array section is the event that the plugin listens to
* and the value (in the form of an array) contains the
* callable (or function) as well as the priority. The
* higher the number the higher the priority.
*/
public static function getSubscribedEvents()
{
return [
'onPluginsInitialized' => ['onPluginsInitialized', 0]
];
}
/**
* Initialize the plugin
*/
public function onPluginsInitialized()
{
// Don't proceed if we are in the admin plugin
if ($this->isAdmin()) {
return;
}
// Enable the main event we are interested in
$this->enable([
'onPagesInitialized' => ['onPagesInitialized', 0],
'onPageInitialized' => ['onPageInitialized', 0]
]);
}
// This loads the existing data into Twig
public function onPagesInitialized(Event $e)
{
// Get count data file
$config = $this->grav['config'];
$locator = $this->grav['locator'];
$path = $locator->findResource('user://data', true);
$path .= DS.static::sanitize($this->grav['config']->get('plugins.count-views.datafile'));
// Get page route
$page = $this->grav['page'];
$route = $page->route();
if (empty($route)) $route = $this->config->get('plugins.error.routes.404', '/error');
// Open data file
$datafh = File::instance($path);
$data = Yaml::parse($datafh->content());
$datafh->free();
// Load count data into a twig variable
$this->grav['twig']->twig_vars['viewcounts'] = $data;
}
// This increments the counter
public function onPageInitialized(Event $e)
{
// Get count data file
$config = $this->grav['config'];
$locator = $this->grav['locator'];
$path = $locator->findResource('user://data', true);
$path .= DS.static::sanitize($this->grav['config']->get('plugins.count-views.datafile'));
// Get page route
$page = $this->grav['page'];
$route = $page->route();
if (empty($route)) $route = $this->config->get('plugins.error.routes.404', '/error');
// Open data file
$datafh = File::instance($path);
$datafh->lock();
$data = Yaml::parse($datafh->content());
if ($data === null) {
$data = array();
}
// Record count
if (array_key_exists($route, $data)) {
$data[$route]++;
} else {
$data[$route] = 1;
}
// Save
$datafh->save(YAML::dump($data));
$datafh->free();
}
private static function sanitize($fn) {
$fn = trim($fn);
$fn = str_replace('..', '', $fn);
$fn = ltrim($fn, DS);
$fn = str_replace(DS.DS, DS, $fn);
return $fn;
}
}