Переопределяю метод load для таблицы - Разработка расширений для Joomla 3.x

...
class TableTurism_Order extends JTable
...
public function load($keys = null, $reset = true) // Копия с той функции что в JTABLE
	{
		...
		// Initialise the query.
		$query = $this->_db->getQuery(true);
			$query->select( 'o.*' );
			$query->select( 't.title as tt' );
			$query->select( 'c.title as ct' );
			$query->join( 'LEFT', '#__turism_customer as c ON c.id=o.customer_id' );
			$query->join( 'LEFT', '#__turism_tour as t ON t.id=o.tour_id' );
			$query->from($this->_tbl. ' as o');
			
		$fields = array_keys($this->getProperties());

		foreach ($keys as $field => $value)
		{
			// Check that $field is in the table.
			if (!in_array($field, $fields))
			{
				throw new UnexpectedValueException(sprintf('Missing field in database: %s   %s.', get_class($this), $field));
			}
			// Add the search tuple to the query.
			$query->where('o.'.$this->_db->quoteName($field). ' = ' . $this->_db->quote($value));
		}

		$this->_db->setQuery($query);

		$row = $this->_db->loadAssoc();

		// Check that we have a result.
		if (empty($row))
		{
			$result = false;
		}
		else
		{
			// Bind the object with the row and return.
			$result = $this->bind($row);
		}

		// Implement JObservableInterface: Post-processing by observers
		$this->_observers->update('onAfterLoad', array(&$result, $row));

		return $result;
	}

$query->where('o.id=\''.$item->id.'\'');