/**
* Triggers a workflow request, queries a permission key to see what workflows are attached to it
* and initiates them.
*
* @param \PermissionKey $pk
*
* @return optional WorkflowProgress
*/
protected function triggerRequest(\PermissionKey $pk)
{
if (!$this->wrID) {
$this->save();
}
if (!$pk->canPermissionKeyTriggerWorkflow()) {
throw new Exception(t('This permission key cannot start a workflow.'));
}
$pa = $pk->getPermissionAccessObject();
$workflows = array();
$workflowsStarted = 0;
if (is_object($pa)) {
$workflows = $pa->getWorkflows();
foreach ($workflows as $wf) {
if ($wf->validateTrigger($this)) {
$this->addWorkflowProgress($wf);
++$workflowsStarted;
}
}
}
if ($workflowsStarted == 0) {
$defaultWorkflow = new EmptyWorkflow();
$wp = $this->addWorkflowProgress($defaultWorkflow);
return $wp->getWorkflowProgressResponseObject();
}
}
