Default action: summary.
If an argument was expected and was not given, in this case, display a summary query.
protected function defaultSummary() {
$this->view->build_info['summary'] = TRUE;
$this->view->build_info['summary_level'] = $this->options['id'];
// Change the display style to the summary style for this
// argument.
$this->view->style_plugin = Views::pluginManager("style")
->createInstance($this->options['summary']['format']);
$this->view->style_plugin
->init($this->view, $this->displayHandler, $this->options['summary_options']);
// Clear out the normal primary field and whatever else may have
// been added and let the summary do the work.
$this->query
->clearFields();
$this
->summaryQuery();
$by = $this->options['summary']['number_of_records'] ? 'num_records' : NULL;
$this
->summarySort($this->options['summary']['sort_order'], $by);
// Summaries have their own sorting and fields, so tell the View not
// to build these.
$this->view->build_sort = FALSE;
return TRUE;
}