Record rules, groups and ir.model.access rows all have a say in what a user can see, and they do not overrule each other in the order most people assume. A walk through how the three combine, and the quickest way to prove which one is hiding a record.
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Where QWeb reports go wrong, and how to tell quicklyMost broken PDFs come down to one of four things: a missing paper format, a field that is empty in production, wkhtmltopdf disagreeing with your CSS, or a t-foreach over the wrong recordset. A short triage order that finds it fast.Shipping a module to the Odoo Apps storePublishing is its own small project: the manifest, the screenshots, the version branches, and the review notes that come back. Notes from getting a POS module through, and the things I would prepare earlier next time.Planning an Odoo migration you can actually roll backThe scripts matter less than the order you run them in. How I audit custom modules first, port deprecated APIs before touching data, and keep a parity check after every run so a bad migration is a restore rather than a rebuild.