Sale Channel

This module adds a simple way to tag sales with the channel they came from, so you can tell whether an order or invoice originated from a given marketplace or shop.

• A new "Sale Channels" menu appears under Sales > Configuration, where you can create and manage channels. Each channel has a name, can be archived, and can be linked to a company.
• On a sales order form, a "Sale Channel" field is added next to the payment terms. It becomes read-only once the order is cancelled or confirmed.
• On customer invoices, the same "Sale Channel" field appears in the "Other Info" tab (read-only once the invoice is no longer a draft) and as a column in the invoice list.
• When an invoice is created from a sales order, the channel is automatically copied from the order to the invoice.
• Salespeople can view channels but only sales managers can create, edit or delete them.

The module also provides a reusable technical building block (a mixin) that other modules can use to attach records to several channels at once, with a hook triggered when the channel selection changes. No reports, emails or scheduled jobs are added.