Trackers
Similar to the Role resource, Redmine's API only supports reading available issue trackers. These can only be obtained as a list.
use Aedart\Redmine\Tracker;
$trackers = Tracker::list();
Note: The trackers API resource does not support pagination!
Issue's tracker
Despite the API limitations of only being available to list trackers, you can still obtain an individual tracker, by means of relations on an issue.
$tracker = $issue
->tracker()
->fetch();
// ...do something with issue's tracker...
$fields = $tracker->enabled_standard_fields;