Stock Picking QR Codes

Replace barcodes with QR codes on standard Stock Picking (Delivery Slip) and Return Slip PDF reports — no template duplication, no Python overrides.

What it does

The module inherits the standard stock.report_picking QWeb report and switches each barcode widget to the QR symbology. The following barcodes are converted:

• Document / picking name — the header barcode identifying the transfer
• Lot / Serial Number — per move-line lot or serial barcode
• Product barcode — per move-line product barcode
• Package barcode — package label barcode

For readability on printed reports, the encoded value is also shown as text under the Lot / Serial, Product, and Package QR codes.

It also updates Return Slip (stock.report_return_slip) and converts both default barcode widgets to QR:

• Return reference (o.name) — barcode converted to QR
• Return code — barcode converted to QR (O-BTN.return on Odoo 17, OBTRETU on Odoo 18)

Why use it

• QR codes scan reliably from a wider range of angles and at smaller print sizes.
• QR codes can encode longer references (lot numbers, package names) without overflowing the layout.
• Pure-XML override — nothing to upgrade with future Odoo point releases as long as the upstream report keeps the same anchors.

Usage

1. Install the Stock Picking QR Codes module.
2. Open Inventory → Transfers and select a picking.
3. Click Print → Picking Operations (or Delivery Slip) to see picking QR codes, or Print → Return Slip to see Return Slip QR conversions.

Changing the QR code size

Each QR code can be resized independently. Open views/stock_picking_qr_codes.xml and edit the t-options attribute for the code you want to change:

• width / height — the rendered image resolution in pixels (controls sharpness; default 200 x 200).
• img_style — the on-page CSS size, for example width:80px;height:80px; for the document and package codes, and width:60px;height:60px; for the lot/serial and product codes.

After saving the file, upgrade the module (Apps → Stock Picking QR Codes → Upgrade) for the new sizes to take effect.

Example — make the document QR code larger:

<attribute name="t-options">{'widget': 'barcode', 'symbology': 'QR',
    'width': 300, 'height': 300,
    'img_style': 'width:120px;height:120px;'}</attribute>

Known conflicts

stock_picking_totals_report — if both modules are installed on the same database, the picking report will fail to render until two of the four QR templates are deactivated. The totals module rewrites the per-move-line row of the picking report, which removes the xpath targets for the lot/serial and product barcodes.

To fix:

1. Open Settings → Technical → User Interface → Views.
2. Find the view with External ID stock_report_picking_qr_lot and untick Active.
3. Repeat for stock_report_picking_qr_product.

The document-name and package QR codes still print; only the per-line lot/serial and product barcodes are skipped (they are no longer printed by the totals report anyway). Re-tick Active on both views if you later uninstall the totals module.

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