brotherton-erpnext/erpnext/templates/pages/regional/india/update_gstin.py

from __future__ import unicode_literals
import frappe
from frappe import _
from six import iteritems

def get_context(context):
	context.no_cache = 1
	party = frappe.form_dict.party
	context.party_name = party

	try:
		update_gstin(context)
	except frappe.ValidationError:
		context.invalid_gstin = 1

	party_type = 'Customer'
	party_name = frappe.db.get_value('Customer', party)

	if not party_name:
		party_type = 'Supplier'
		party_name = frappe.db.get_value('Supplier', party)

	if not party_name:
		context.not_found = 1
		return

	context.party = frappe.get_doc(party_type, party_name)
	context.party.onload()


def update_gstin(context):
	dirty = False
	for key, value in iteritems(frappe.form_dict):
		if key != 'party':
			address_name = frappe.get_value('Address', key)
			if address_name:
				address = frappe.get_doc('Address', address_name)
				address.gstin = value.upper()
				address.save(ignore_permissions=True)
				dirty = True

	if dirty:
		frappe.db.commit()
		context.updated = True