/**
* _adjust_line_item_quantity
*
* @access protected
* @param EE_Line_Item $line_item
* @param int $quantity
* @param string $action
* @return EE_Line_Item|null
*/
protected function adjust_line_item_quantity($line_item, $quantity = 1, $action = 'add')
{
if ($line_item instanceof EE_Line_Item) {
//EEH_Debug_Tools::printr( $line_item->code(), '$line_item->code()', __FILE__, __LINE__ );
//EEH_Debug_Tools::printr( $line_item->type(), '$line_item->type()', __FILE__, __LINE__ );
//EEH_Debug_Tools::printr( $line_item->OBJ_type(), '$line_item->OBJ_type()', __FILE__, __LINE__ );
//EEH_Debug_Tools::printr( $line_item->OBJ_ID(), '$line_item->OBJ_ID()', __FILE__, __LINE__ );
//EEH_Debug_Tools::printr( $quantity, '$quantity', __FILE__, __LINE__ );
//EEH_Debug_Tools::printr( $action, '$action', __FILE__, __LINE__ );
$quantity = (int) $quantity;
if ($quantity === 0 && $action == 'update') {
$_REQUEST['ticket'] = $line_item->OBJ_ID();
$_REQUEST['line_item'] = $line_item->code();
$this->delete_ticket(false);
return $line_item;
} else {
if ($quantity > 0) {
$additional = 'An additional';
$added_or_removed = 'added';
} else {
$additional = 'A ';
$added_or_removed = 'removed';
}
}
$quantity = $action == 'update' ? $quantity : $line_item->quantity() + $quantity;
// update quantity
$line_item->set_quantity($quantity);
//it's "proper" to update the sub-line items quantities too, but core can actually fix it if we don't anyways
if (method_exists('EEH_Line_Item', 'update_quantity')) {
EEH_Line_Item::update_quantity($line_item, $quantity);
} else {
$line_item->set_quantity($quantity);
}
//EEH_Debug_Tools::printr( $line_item, '$line_item', __FILE__, __LINE__ );
$saved = $line_item->ID() ? $line_item->save() : $line_item->quantity() == $quantity;
if ($saved) {
if ($action != 'update') {
$msg = sprintf(__('%1$s item was successfully %2$s for this event.', 'event_espresso'), $additional, $added_or_removed);
} else {
$msg = __('The quantities were successfully updated for this event.', 'event_espresso');
}
// something got added
if (apply_filters('FHEE__EED_Multi_Event_Registration__display_success_messages', false)) {
EE_Error::add_success($msg, __FILE__, __FUNCTION__, __LINE__);
}
} else {
if ($line_item->quantity() != $quantity) {
// nothing added
EE_Error::add_error(sprintf(__('%1$s item was not %2$s for this event. Please refresh the page and try it again.', 'event_espresso'), $additional, $added_or_removed), __FILE__, __FUNCTION__, __LINE__);
return null;
}
}
}
return $line_item;
}
/**
* Updates the line item and its children's quantities to the specified number.
* Does NOT save them or recalculate totals.
* @param EE_Line_Item $line_item
* @param int $new_quantity
*/
public static function update_quantity(EE_Line_Item $line_item, $new_quantity)
{
if (!$line_item->is_percent()) {
$line_item->set_quantity($new_quantity);
$line_item->set_total($line_item->unit_price() * $new_quantity);
}
foreach ($line_item->children() as $child) {
if ($child->is_sub_line_item()) {
EEH_Line_Item::update_quantity($child, $new_quantity);
}
}
}
