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Merge pull request #16326 from hrwX/hotfix-gst-fix

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fix: GSTIN validation
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Nabin Hait 2019-01-10 11:23:42 +05:30 committed by GitHub
commit 6b466fe230
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1 changed files with 39 additions and 14 deletions
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53
erpnext/regional/india/utils.py
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@ -8,22 +8,47 @@ def validate_gstin_for_india(doc, method):
if not hasattr(doc, 'gstin'):
return
if doc.gstin:
doc.gstin = doc.gstin.upper()
if doc.gstin not in ["NA", "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"))
doc.gstin = doc.gstin.upper().strip()
if not doc.gstin or doc.gstin == 'NA':
return
if not doc.gst_state:
if doc.state in states:
doc.gst_state = doc.state
if len(doc.gstin) != 15:
frappe.throw(_("Invalid GSTIN! A GSTIN must have 15 characters."))
if doc.gst_state:
doc.gst_state_number = state_numbers[doc.gst_state]
if doc.gstin and doc.gstin != "NA" and doc.gst_state_number != doc.gstin[:2]:
frappe.throw(_("First 2 digits of GSTIN should match with State number {0}")
.format(doc.gst_state_number))
p = re.compile("^[0-9]{2}[A-Z]{4}[0-9A-Z]{1}[0-9]{4}[A-Z]{1}[1-9A-Z]{1}[1-9A-Z]{1}[0-9A-Z]{1}$")
if not p.match(doc.gstin):
frappe.throw(_("Invalid GSTIN! The input you've entered doesn't match the format of GSTIN."))
validate_gstin_check_digit(doc.gstin)
if not doc.gst_state and doc.state:
state = doc.state.lower()
states_lowercase = {s.lower():s for s in states}
if state in states_lowercase:
doc.gst_state = states_lowercase[state]
else:
return
doc.gst_state_number = state_numbers[doc.gst_state]
if doc.gst_state_number != doc.gstin[:2]:
frappe.throw(_("Invalid GSTIN! First 2 digits of GSTIN should match with State number {0}.")
.format(doc.gst_state_number))
def validate_gstin_check_digit(gstin):
''' Function to validate the check digit of the GSTIN.'''
factor = 1
total = 0
code_point_chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'
mod = len(code_point_chars)
input_chars = gstin[:-1]
for char in input_chars:
digit = factor * code_point_chars.find(char)
digit = (digit // mod) + (digit % mod)
total += digit
factor = 2 if factor == 1 else 1
if gstin[-1] != code_point_chars[((mod - (total % mod)) % mod)]:
frappe.throw(_("Invalid GSTIN! The check digit validation has failed. " +
"Please ensure you've typed the GSTIN correctly."))
def get_itemised_tax_breakup_header(item_doctype, tax_accounts):
if frappe.get_meta(item_doctype).has_field('gst_hsn_code'):