| import frappe, re |
| from frappe import _ |
| from erpnext.regional.india import states, state_numbers |
| |
| def validate_gstin_for_india(doc, method): |
| if not hasattr(doc, 'gstin'): |
| return |
| |
| if doc.gstin: |
| if doc.gstin != "NA": |
| p = re.compile("[0-9]{2}[a-zA-Z]{5}[0-9]{4}[a-zA-Z]{1}[1-9A-Za-z]{1}[Z]{1}[0-9a-zA-Z]{1}") |
| if not p.match(doc.gstin): |
| frappe.throw(_("Invalid GSTIN or Enter NA for Unregistered")) |
| |
| if not doc.gst_state: |
| if doc.state in states: |
| doc.gst_state = doc.state |
| |
| if doc.gst_state: |
| state_number = state_numbers[doc.gst_state] |
| if state_number != doc.gstin[:2]: |
| frappe.throw(_("First 2 digits of GSTIN should match with State number {0}").format(state_number)) |