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Site activity is a custom stream from the heartbeat_example submodule. This module fungates as testcase for site and module developers.
How to create your own stream?
By implementating hook_heartbeat_register_access_types, it is possible to add stream, derivated from an existing one or the base heartbeatAccess stream type.
E.g.:
<?php/** * Implementation of hook_heartbeat_register_access_types(). */ function heartbeat_example_heartbeat_register_access_types() { return array( // Site activity stream is kind of a copy of HeartbeatPublic. // It is only to show you how it's done. 0 => array( 'name' => 'Site activity', 'class' => 'SiteActivity', 'path' => 'siteactivity.inc', 'module' => 'heartbeat_example' ), ); }?>
Put SiteActivity.inc in your module folder and add the class-include it extends on above the class definition (by invoking heartbeat_include). From now it is possible to "hook" into each of the protected methods. You could for instance a bit of a sql or even end up rewriting the whole sql yourself.
<?php/** * Class SiteActivity * Concrete class to prepare messages for whole site, * to be customized UI wise * */ class SiteActivity extends HeartbeatAccess {
protected function hasAccess() { return TRUE; }
/** * Implementation of dressUpMessages(). * * @param object HeartbeatParser $heartbeat * The heartbeat parser object * @return object HeartbeatParser $heartbeat */ public function dressUpMessages(HeartbeatParser $heartbeat) { $sql = " AND ua.access > 0 "; $heartbeat->raw_messages = $this->resultSql($sql); return $heartbeat; }
/** * Function to add a part of a sql to a query built by views * * @param object $view The view handler object by reference to add our part to the query */ public function addViewQuery(&$view) { // Make the sql limited to the access $field = "$view->table_alias.$view->real_field"; $view->query->add_where('andgroup', "$field > %d AND $view->table_alias.access > 0", 0); } }?>
A good example is to join over user and node tables to obtain a big performance improvement.
See heartbeat_example submodule for the full example.
A heartbeat activity stream
A heartbeat stream is a set of activity messages for a set of parameters. These parameters are bundled into a configuration or parameter object. A stream object is instantiated with the parameter object to perform a query to the activity logs table. Each of the streams are available as block and page. Streams are configured at location admin/build/heartbeat/streams.
