On my situation, i had add a new field in pos.order.line (it's 'selected_location_id')
class PosOrderLinesExtended(models.Model):

_inherit = 'pos.order.line'

selected_location_id = fields.Many2one('stock.location', string="POS Location")

@api.model

def _load_pos_data_fields(self, config_id):

data = super()._load_pos_data_fields(config_id)

print("dataaaa",data)

data += ['selected_location_id']

return data

def create(self, vals):

_logger.info("📥 pos.order.line vals nhận được: %s", vals)

return super().create(vals)


In pos, i create a new Component to select stock location with some location have a field to checck select on pos,

patch(PosStore.prototype, {

async addLineToOrder(vals, order, opts = {}, configure = true) {

const location = await makeAwaitable(this.dialog, LocationPopup);

if (location) {

vals.selected_location_id = location.id;

}

const line = await super.addLineToOrder(vals, order, opts, configure);

line.selected_location_id = location?.id;

console.log("lineeeeeee",line)

return line;

}

});


but when i validate the posorder in pos, it not give back select a location to field  in pos.order.line

all of my module custom in this link:
https://github.com/IdalisNguyen/POS-Select-Location.git

Someone explain to me why I can't get the data from above pos to return to the variable below model?
Thanks you for your attention