I am trying to expand the Barcode module to search additional models for scanned data and I'm trying to achieve this with Javascript and a Controller. Even tho *I think* I had some good progress, I cant seem to get the record to open on scan.

/** @odoo-module **/
import { rpc } from "@web/core/network/rpc";
import { registry } from "@web/core/registry";

console.log("Barcode Listener Initialized!");

const actionService = registry.category("services").get("action");

document.addEventListener("barcode_scanned", async function (event) {
    let barcode = event.detail.barcode;
    console.log("Scanned Barcode from Odoo App:", barcode);

    try {
        console.log("Sending JSON-RPC request with barcode:", barcode);

        const response = await rpc("/web/barcode/scanned", { params: { barcode } });

        console.log("JSON-RPC Response:", response);

        if (response.warning) {
            alert(response.warning);
        } else {
            console.log("Opening Dimension Record:", response);

            await actionService.doAction(response);
        }
    } catch (error) {
        console.error("Error sending barcode:", error);
    }
});

this is my Java script and below is the controller

import logging
from odoo import http
from odoo.http import request

_logger = logging.getLogger(__name__)

class BarcodeScannerController(http.Controller):

    @http.route('/web/barcode/scanned', type='json', auth='user')
    def barcode_scanned(self, **kwargs):

        barcode = kwargs.get('barcode')

        _logger.info("Received barcode: %s", barcode)

        if not barcode:
            return {'warning': 'No barcode received'}

        dimension_record = request.env['dimension'].sudo().search([('barcode', '=', barcode)], limit=1)

        if dimension_record:
            action = request.env.ref('dimensions.action_dimension').sudo().read()[0]

            action.update({
                'res_id': dimension_record.id,
                'views': [(False, 'form')],
                'target': 'current'
            })

            _logger.info("Returning action: %s", action)
            return action

        return {'warning': 'No record found for this barcode'}


Below is a console attempt I made to see if it works and the outcome is

await fetch('/web/barcode/scanned', {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify({ params: { barcode: "1313279717530" } })
}).then(res => res.json()).then(data => {
    console.log("🔄 Fetch Response:", data);
});

VM6269:6 🔄 Fetch Response: {jsonrpc: '2.0', id: null, result: {…}}id: nulljsonrpc: "2.0"result: {id: 445, name: 'Dimensions', type: 'ir.actions.act_window', xml_id: 'dimensions.action_dimension', path: false, …}[[Prototype]]: Object
undefined

I appreciate any help thank you!