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Subject: Error Creating Users in Odoo via XML-RPC from Express.js Backend

Hi,

I’m experiencing an issue when trying to create users in Odoo using the xml-rpc library in my Express.js backend. Here’s a detailed overview of my setup:

Setup

1. Environment

• Dockerized Application

• Odoo: version 18.0

• PostgreSQL: version 15

• Backend: Express.js (with xml-rpc library) with node:16

• Frontend: Next.js (not directly relevant to the issue)

• The Odoo database is correctly initialized using Docker, and there are no issues with the database setup.

2. Endpoints

• A GET route verifies the connection to Odoo via XML-RPC, and it works perfectly.

• A POST route attempts to create a user in Odoo by calling the create method of the res.users model.

3. The Problem

• When I send a POST request to create a user, I receive an error indicating that I am providing too many “positional arguments”.

• The error persists despite passing what I believe to be the correct payload.

Key Files

Below are the files relevant to my setup:

docker-compose.yml

services:
  postgres_db:
    image: postgres:15
    container_name: postgres_db
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: password
      POSTGRES_DB: xiptelecom
    volumes:
      - postgres_data:/var/lib/postgresql/data
      - ./init_postgres_odoo.sql:/docker-entrypoint-initdb.d/init_postgres_odoo.sql
    ports:
      - "5432:5432"
    restart: always

  odoo:
    image: odoo:18.0
    container_name: odoo
    depends_on:
      - postgres_db
    ports:
      - "8069:8069"
    volumes:
      - odoo-web-data:/var/lib/odoo
      - ./config:/etc/odoo
      - ./addons:/mnt/extra-addons
      - ./logs:/var/log/odoo
    environment:
      - HOST=postgres_db
      - USER=odoo_user
      - PASSWORD=odoo_password
    command: odoo -d odoo --db_user=odoo_user --db_password=odoo_password -i base
    restart: always

  pgadmin:
    image: dpage/pgadmin4
    container_name: pgadmin4_container
    restart: always
    ports:
      - "5050:80"
    environment:
      PGADMIN_DEFAULT_EMAIL: admin@admin.com
      PGADMIN_DEFAULT_PASSWORD: admin
    volumes:
      - pgadmin_data:/var/lib/pgadmin

  backend:
    build:
      context: ./Backend
      dockerfile: Dockerfile
    container_name: backend
    command: "npm run dev"
    volumes:
      - ./Backend:/usr/src/app
    ports:
      - "1337:1337"
    depends_on:
      - postgres_db

  frontend:
    build:
      context: ./Frontend
      container_name: frontend
      command: "npm run dev"
      volumes:
        - ./Frontend:/app
      ports:
        - "3000:3000"
      depends_on:
        - backend

volumes:
  postgres_data:
  pgadmin_data:
  odoo-web-data:
  odoo-db-data:

server.js

const express = require('express');
const port = 1337;
const app = express();

app.use(express.json());

const { connectToOdoo, createUserInOdoo } = require('./odoo.js');

app.get('/api/test-odoo', async (req, res) => {
    try {
        await connectToOdoo();
        res.status(200).json({ message: 'Connexion à Odoo réussie !' });
    } catch (err) {
        res.status(500).json({ error: 'Connexion à Odoo échouée.', details: err.message });
    }
});

app.post('/create-user', async (req, res) => {
    const { name, email, login } = req.body;

    if (!name || !email || !login) {
        return res.status(400).json({ error: 'Tous les champs sont requis (name, email, login)' });
    }

    try {
        await connectToOdoo();
        const userId = await createUserInOdoo({ name, login, email });
        res.status(201).json({ message: 'Utilisateur créé avec succès dans Odoo', userId });
    } catch (err) {
        res.status(500).json({ error: 'Erreur lors de la création de l\'utilisateur dans Odoo', details: err.message });
    }
});

app.listen(port, () => console.log(`Le backend à démarré sur le port : ${port}`));

odoo.js

const Odoo = require('odoo-xmlrpc');

const odoo = new Odoo({
    url: 'http://odoo:8069',
    db: 'odoo',
    username: 'admin',
    password: 'admin',
});

const connectToOdoo = async () => {
    return new Promise((resolve, reject) => {
        odoo.connect((err) => {
            if (err) {
                reject(err);
            } else {
                resolve();
            }
        });
    });
};

const createUserInOdoo = async (userData) => {
    try {
        await connectToOdoo();
        const response = await new Promise((resolve, reject) => {
            odoo.execute_kw('res.users', 'create', [userData], (err, value) => {
                if (err) reject(err);
                else resolve(value);
            });
        });
        return response;
    } catch (err) {
        throw new Error(err);
    }
};

module.exports = { connectToOdoo, createUserInOdoo };

Request Sent from REST Client

POST http://localhost:1337/create-user
Content-Type: application/json

{
  "name": "Test User",
  "email": "testuser@example.com",
  "login": "testuser"
}

The error I receive :

HTTP/1.1 500 Internal Server Error
X-Powered-By: Express
Content-Type: application/json; charset=utf-8
Content-Length: 1973
ETag: W/"7b5-HnkxxuFqhmAddquOjPBhWEHKDTE"
Date: Mon, 27 Jan 2025 15:22:10 GMT
Connection: close

{
  "error": "Erreur lors de la création de l'utilisateur dans Odoo",
  "details": "Erreur lors de la création de l'utilisateur : Erreur lors de la création de l'utilisateur : XML-RPC fault: Traceback (most recent call last):\n  File \"/usr/lib/python3/dist-packages/odoo/addons/base/controllers/rpc.py\", line 161, in xmlrpc_2\n    response = self._xmlrpc(service)\n               ^^^^^^^^^^^^^^^^^^^^^\n  File \"/usr/lib/python3/dist-packages/odoo/addons/base/controllers/rpc.py\", line 139, in _xmlrpc\n    result = dispatch_rpc(service, method, params)\n             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/usr/lib/python3/dist-packages/odoo/http.py\", line 398, in dispatch_rpc\n    return dispatch(method, params)\n           ^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/usr/lib/python3/dist-packages/odoo/service/model.py\", line 39, in dispatch\n    res = execute_kw(db, uid, *params[3:])\n          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/usr/lib/python3/dist-packages/odoo/service/model.py\", line 61, in execute_kw\n    return execute(db, uid, obj, method, *args, **kw or {})\n           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/usr/lib/python3/dist-packages/odoo/service/model.py\", line 68, in execute\n    res = execute_cr(cr, uid, obj, method, *args, **kw)\n          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/usr/lib/python3/dist-packages/odoo/service/model.py\", line 52, in execute_cr\n    result = retrying(partial(odoo.api.call_kw, recs, method, args, kw), env)\n             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/usr/lib/python3/dist-packages/odoo/service/model.py\", line 137, in retrying\n    result = func()\n             ^^^^^^\n  File \"/usr/lib/python3/dist-packages/odoo/api.py\", line 517, in call_kw\n    result = getattr(recs, name)(*args, **kwargs)\n             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\nTypeError: create() takes 2 positional arguments but 4 were given\n"
}

Question

• Why does the create() method fail with a “positional arguments” error in this context?

• Could you provide guidance on the correct format for the create method in Odoo when using XML-RPC?

• Do I need to adjust the userData object structure to align with Odoo’s expectations?

Thank you in advance for any assistance!