Adding custom data to order endpoint - no setter?

Question

I'm trying to add custom data to an order using the REST API.

I have added code which GETS the data from the database, but i'm now looking at how to set this using the REST API.

I have written code, which have relevant getters / setters in OrderExtension, and the name of the field is appearing in the swagger -

However, when I try to use this I get this error back -

Is it possible to update this part of an order once it has been placed? Would I need to create my own endpoint to do this? Or would I need to add it to quote, and then order?

Answer 1

Your sort_code field is part of extension_attributes for the order, so you need to pass it as such. Note how it's looking for your field on OrderInterface, instead of on OrderExtensionInterface where it is.

To do that, taking your example, wrap your field in extension_attributes like so:

{
    "entity": {
        "entity_id": 7,
        "extension_attributes": {
            "sort_code": 321321
        }
    }
}

That should map it through correctly.