Purchase Product Last Price Info

This module adds a read-only "Purchase" block to the product form and extra columns to product lists, giving users a quick view of the most recent confirmed purchase of a product.

What it shows: - The last supplier, the purchase date and the unit price of the most recent purchase order line. - If the purchase was made in a foreign currency, the currency and its exchange rate are also shown (only for users allowed to work with multiple currencies).

How the "last purchase" is chosen: only purchase order lines whose order is confirmed or done, and belonging to companies the user is currently working in, are considered. Among them, the line with the latest order date is used.

The information is computed automatically on product.product and product.template, so it updates as new purchases are confirmed. On the product form, the block is shown for single-variant products on the template form and for multi-variant products on the variant form, avoiding duplication. In list views, the last purchase price is added next to the sale price (for variants) or the cost (for templates).

No menus, buttons, emails or scheduled actions are added; the module only enriches existing product screens and lists with purchase history data.