public function prepare_items()
{
$this->_column_headers = array($this->get_columns(), $this->get_hidden_columns(), $this->get_sortable_columns());
$args = $this->get_query_args();
$total_items = MS_Model_Invoice::get_invoice_count($args);
$this->items = apply_filters('ms_helper_listtable_billing_items', MS_Model_Invoice::get_invoices($args));
$per_page = $this->get_items_per_page('invoice_per_page', self::DEFAULT_PAGE_SIZE);
$this->set_pagination_args(array('total_items' => $total_items, 'per_page' => $per_page));
}
/**
* Get a list of all invoices linked to this relationship
*
* @since 1.0.0
* @api
*
* @return MS_Model_Invoice[] List of invoices.
*/
public function get_invoices()
{
$invoices = MS_Model_Invoice::get_invoices(array('nopaging' => true, 'meta_query' => array(array('key' => 'ms_relationship_id', 'value' => $this->id))));
return apply_filters('ms_model_relationship_get_invoices', $invoices);
}
