Elgg-Lorea-Hydra/views/default/widgets/river_widget/content.php

<?php
/**
 * Activity widget content view
 */

$num_display = sanitize_int($vars['entity']->num_display, false);
// set default value for display number
if (!$num_display) {
	$num_display = 8;
}

$options = array(
	'limit' => $num_display,
	'pagination' => false,
);

if (elgg_in_context('dashboard')) {
	if ($vars['entity']->content_type == 'friends') {
		$options['relationship_guid'] = elgg_get_page_owner_guid();
		$options['relationship'] = 'friend';
	}
} else {
	$options['subject_guid'] = elgg_get_page_owner_guid();
}

$content = elgg_list_river($options);
if (!$content) {
	$content = elgg_echo('river:none');
}

echo $content;