Purchase Order Line Deep Sort

This module adds automatic sorting of purchase order lines. On each purchase order you get two new fields in the 'Purchase Delivery & Invoice' area of the form: 'Sort Lines By' and 'Sort Direction'. The available criteria are: by name, by product name, by product reference, by planned date, by unit price and by quantity; the direction can be ascending or descending.

Sorting happens automatically whenever you create an order, add or change lines, or change the sort criteria or direction. Lines are renumbered so they appear in the chosen order on screen and in reports.

Section, subsection and note lines are not moved: they act as separators, and only the product lines inside each block are sorted. This keeps the structure of the order intact.

In the Purchase settings you can define a company-wide default sort criterion and direction. New purchase orders then start with those values, but you can still change them on each individual order. If you clear the sort criterion, the direction is automatically cleared too.

The module extends purchase.order, purchase.order.line, res.company and res.config.settings, and adds options to the purchase order form and to the Purchase configuration screen.