/**
* Return number of items that user $rate tax rate
*
* @param TaxRate $tax_rate
* @return integer
*/
function countByTaxRate($tax_rate)
{
return InvoiceItems::count(array('tax_rate_id = ?', $tax_rate->getId()));
}
/**
* Return number of items that user $rate tax rate
*
* @param TaxRate $tax_rate
* @return integer
*/
function countByTaxRate($tax_rate)
{
return InvoiceItems::count(array('tax_rate_id = ?', $tax_rate->getId()));
}