Best way to customize core functionnalities of ERPNext

[penieldev]

You could monkey patch the non-whitelisted methods from your hooks. Check out this thread.

How to override method in frappe?

Hello, I am doing some customisation in POS? I want to add vehicle number and customer type in POS. [00 PM] I have successfully updated popup and javascript using javascript prototype and javascript class extend method. I have maintained this in another custom app using page_js hook. Now, I am stuck at erpnext python code overriding? In some cases we can use hooks before insert, after insert to write own python code, but this is not possible for current case as data is coming from local s…