Purchase Order Line Effective Date

This module adds two read-only dates to every purchase order line: the completion date of the first receipt and the completion date of the last receipt for that line. They are filled in automatically from the done stock moves coming from a supplier, so users do not type them.

Where you see them: - In the purchase order form, inside the order lines list, next to the planned date. Both columns are hidden by default and can be switched on with the optional-columns menu. - In the purchase order line list view, again next to the planned date, also hidden by default. - In the purchase history view of a product/vendor line, where they are shown directly after the approval date. - In the purchase analysis report, where the last receipt completion date is added as a new measure/column.

Business behaviour: the dates are recalculated whenever the linked stock moves change, and only completed moves from a supplier location count. The first date is the earliest such move, the last date is the latest one. The report is also adjusted so the effective date is taken from the order line instead of the order header, avoiding a duplicate-column error in the grouping.

It touches purchase.order.line and purchase.report, and relies on the stock moves created by purchase_stock.