How to Override POS PAGE Item Cart Functionality in Frappe?

[esafwan]

This is a bit old but still very relevant.

Extending Point of Sale in ERPNext using POS Controller

We are adding some domain specific features to default POS in ERPNext. We were able to do it by extending the POS Controller Class implemented [here]. (erpnext/erpnext/selling/page/point_of_sale/pos_controller.js at develop · frappe/erpnext · GitHub). We want to extend the existing POS from a custom optional app. Some common question you may have and quick answers to it: Q1) Why not raise a PR in existing POS. A) We are implementing domain specific features that only people of that domain wi…