Partner Sequence Address Type

When you install this module, Odoo creates a new configuration screen called "Partner Sequence by Address Type" under the Contacts settings. There you see one line per address type (for example Contact, Invoice Address, Delivery Address, Other Address, and "No address type set"). For each line you can pick an existing numbering sequence.

From then on, whenever a contact is created or its address type changes, Odoo automatically fills the Reference field using the sequence linked to that address type. If no sequence is configured for the type, no reference is generated.

A few important behaviours shown in the code: - A reference is generated even for child contacts and for non-company contacts, unlike the standard behaviour. - The reference is not copied from a parent company to its child contacts, so each contact keeps its own number. - The Reference field is always editable, and it is also shown directly on the contact form when you open a contact from the Contacts & Addresses cards.

The module touches the partner model (res.partner) and adds a small configuration model (res.partner.sequence.type) that links an address type to a sequence. Only managers can change the configuration; regular users can view it.