I want to create a module where a user can enter a batch of order lines under Sales Order. I have button in the Sales Order screen to bring up a popup window, containing a view with a text box where they can enter the products, one per line. When they click the Save button on this view, the content of the textbox will be saved into sale_order_line table. Two questions:

1. How can I get the order_id when the save button is clicked?
2. I have used self.pool.get('sale.order.line').create(... etc . to save the order lines. Is this the right approach?

Thanks in advance.