Purchase invoicing no zero line

This module gives you a simple switch on purchase journals so that vendor bills generated from purchase orders do not include lines with a quantity of zero.

Where it appears: - On the journal configuration form (Accounting journals), a new checkbox "Avoid zero lines" is shown only for journals of type Purchase.

What it does: - When you create a vendor bill from a purchase order (using the purchase order reference on the bill), Odoo normally copies all purchase order lines into the bill, including those with zero quantity. - If the journal selected on the bill has "Avoid zero lines" checked, those zero-quantity lines that come from that purchase order are automatically removed from the bill. - The removal happens as part of the automatic completion of the bill from the purchase order, so the user sees the bill without the empty lines right away.

Business rules and behaviour: - The option is per journal, so you can decide which purchase journals should drop zero lines and which should keep them. - Only lines linked to the same purchase order and with a quantity considered zero (according to unit of measure rounding) are removed; other lines are untouched.

Areas touched: - It extends account.journal with the new setting and adjusts the behaviour of account.move when a vendor bill is filled from a purchase order.