Skip to Content
Вам необхідно зареєструватися, щоб взаємодіяти зі спільнотою.
All Posts Люди Значки
Мітки (View all)
odoo accounting v14 pos v15
Про цей форум
Це запитання позначене
posfrontend
3 Відповіді
2554 Переглядів
Аватар
Ariko Stephen Philemon

Hi all,

I’m trying to expose a custom field added on pos.order so that it can be used in the POS frontend OrderReceipt QWeb/OWL template in Odoo 18.

Goal

I want a custom field defined on pos.order to be available in the POS frontend, specifically in the order_receipt template.

What I have done

I extended the pos.order model and tried to load the field using _load_pos_data_fields method , as shown below:

pos_order.py
from odoo import models, fields, api
# pos_order.py
from odoo import models, fields, api

class PosOrder(models.Model):
    _inherit = "pos.order"

    custom_field = fields.Char()

    @api.model
    def _load_pos_data_fields(self, config_id):
        fields = super()._load_pos_data_fields(config_id)
        fields.append("custom_field")
        return fields
Frontend error

After this change, the POS UI doesn't load at all, it crashes with the following error:

installHook.js:1 TypeError: Cannot read properties of undefined (reading 'filter') at get taxTotals (point_of_sale.assets_prod.min.js:8929:1016)
What I found so far

I found a couple of older forum posts and answers that suggest extending _loader_params_pos_order method on pos.session model

However, in Odoo 18, _loader_params_pos_order no longer exists, so those solutions are no longer applicable.


What is the correct way in Odoo 18 to load additional pos.order fields into the POS frontend?

Аватар
Відмінити
Аватар
CandidRoot Solutions
Найкраща відповідь

Hello Ariko,

In Odoo 18, your approach using _load_pos_data_fields() is not correct for POS orders, and that is why the POS frontend crashes.

Why _load_pos_data_fields() does NOT work

  • In Odoo 18, POS orders are created and handled in the frontend (JS)

  • pos.order records are NOT loaded from backend when POS starts

  • _load_pos_data_fields() is meant for models fetched during POS loading, not for runtime orders

Because of this:

  • POS expects a specific data structure

  • Adding extra fields via _load_pos_data_fields() breaks the JS model

  • Result: POS crashes (taxTotals → undefined.filter error)

So this error is expected behavior, not a bug.

Correct way in Odoo 18 (Recommended)

To show a custom field on the POS receipt, you must extend the frontend export logic, not backend loading.

Patch export_for_printing() in JS
// static/src/app/models/pos_order.js
import { PosOrder } from "@point_of_sale/app/models/pos_order";
import { patch } from "@web/core/utils/patch";

patch(PosOrder.prototype, {
    export_for_printing(baseUrl, headerData) {
        const result = super.export_for_printing(baseUrl, headerData);
        result.custom_field = this.custom_field || "";
        return result;
    },
});
Display it in the receipt template
<t t-name="your_module.OrderReceipt"
   t-inherit="point_of_sale.OrderReceipt"
   t-inherit-mode="extension">
    <xpath expr="//div[hasclass('pos-receipt-order-data')]" position="after">
        <div t-esc="props.data.custom_field"/>
    </xpath>
</t>
Why this works

  • export_for_printing() is the single source of truth for receipt data

  • Receipt templates only consume what this method returns

  • This is the official and stable approach in Odoo 18

    If this clarification helped you, kindly upvote.

    Best Regards

    CandidRoot Solutions Pvt. Ltd.
  • Mobile: (+91) 8849036209
  • Whatapp: (+91) 8849036209
Аватар
Відмінити
Аватар
Kunjan Patel
Найкраща відповідь
Hello Ariko Stephen Philemon,
I hope you are doing well

Odoo 18: Custom Field in POS Receipt
Patch export_for_printing() in JS
  // static/src/app/models/pos_order.js
  import { PosOrder } from "@point_of_sale/app/models/pos_order";
  import { patch } from "@web/core/utils/patch";

  patch(PosOrder.prototype, {
      export_for_printing(baseUrl, headerData) {
          const result = super.export_for_printing(baseUrl, headerData);
          result.custom_field = this.custom_field || "";
          return result;
      },
  });

 Display in template
  <t t-name="module.OrderReceipt" t-inherit="point_of_sale.OrderReceipt" t-inherit-mode="extension">
      <xpath expr="//div[hasclass('pos-receipt-order-data')]" position="after">
          <div t-esc="props.data.custom_field"/>
      </xpath>
  </t>  

Why _load_pos_data_fields doesn't work: Orders are created in frontend JS, not loaded from backend. The receipt uses export_for_printing() to build its data.

I hope this information helps you

Thanks & Regards
Kunjan Patel
Аватар
Відмінити
Аватар
Bay Forward LLC
Найкраща відповідь
Extend the OrderReceipt widget in your custom module and add your field in the render method. Example:\
\
```javascript\
OrderReceipt.include({\
    render: function() {\
        this._super.apply(this, arguments);\
        this.$el.find('.receipt-container').append('<div>' + this.pos.get_order().your_custom_field + '</div>');\
    }\
});\

```

Аватар
Відмінити
Related Posts Відповіді Переглядів Дія
Test timeout has no effect Вирішено
test pos frontend
Аватар
1
бер. 23
4151
POS Integration: External system not syncing orders — API connection succeeds but no data
pos
Аватар
0
трав. 26
5
Product Page Customization in Odoo Online (eCommerce)
frontend
Аватар
Аватар
Аватар
2
квіт. 26
1242
Propos and Marvel printers not connecting to Odoo POS
pos
Аватар
Аватар
Аватар
2
квіт. 26
3064
18v online Self order: Variants under one product, now they are all separate.
pos
Аватар
0
бер. 26
4032