Merge pull request #40504 from khushi8112/selling-coupon-code

feat: Coupon code in sales invoice

erpnext/accounts/doctype/pricing_rule/utils.py

@@ -736,7 +736,6 @@ def get_pricing_rule_items(pr_doc, other_items=False) -> list:
 
 def validate_coupon_code(coupon_name):
 	coupon = frappe.get_doc("Coupon Code", coupon_name)
-
 	if coupon.valid_from:
 		if coupon.valid_from > getdate(today()):
 			frappe.throw(_("Sorry, this coupon code's validity has not started"))

erpnext/accounts/doctype/sales_invoice/sales_invoice.json

@@ -90,6 +90,7 @@
   "section_break_49",
   "apply_discount_on",
   "base_discount_amount",
+  "coupon_code",
   "is_cash_or_non_trade_discount",
   "additional_discount_account",
   "column_break_51",
@@ -2173,6 +2174,12 @@
    "label": "Don't Create Loyalty Points",
    "no_copy": 1
   },
+  {
+   "fieldname": "coupon_code",
+   "fieldtype": "Link",
+   "label": "Coupon Code",
+   "options": "Coupon Code"
+  },
   {
    "default": "1",
    "depends_on": "eval: doc.is_return && doc.return_against",

erpnext/accounts/doctype/sales_invoice/sales_invoice.py

@@ -16,6 +16,10 @@ from erpnext.accounts.doctype.loyalty_program.loyalty_program import (
 	get_loyalty_program_details_with_points,
 	validate_loyalty_points,
 )
+from erpnext.accounts.doctype.pricing_rule.utils import (
+	update_coupon_code_count,
+	validate_coupon_code,
+)
 from erpnext.accounts.doctype.repost_accounting_ledger.repost_accounting_ledger import (
 	validate_docs_for_deferred_accounting,
 	validate_docs_for_voucher_types,
@@ -106,6 +110,7 @@ class SalesInvoice(SellingController):
 		contact_person: DF.Link | None
 		conversion_rate: DF.Float
 		cost_center: DF.Link | None
+		coupon_code: DF.Link | None
 		currency: DF.Link
 		customer: DF.Link | None
 		customer_address: DF.Link | None
@@ -294,6 +299,10 @@ class SalesInvoice(SellingController):
 			self.doctype, self.customer, self.company, self.inter_company_invoice_reference
 		)
 
+		# Validating coupon code
+		if self.coupon_code:
+			validate_coupon_code(self.coupon_code)
+
 		if cint(self.is_pos):
 			self.validate_pos()
 
@@ -473,6 +482,9 @@ class SalesInvoice(SellingController):
 			self.update_project()
 		update_linked_doc(self.doctype, self.name, self.inter_company_invoice_reference)
 
+		if self.coupon_code:
+			update_coupon_code_count(self.coupon_code, "used")
+
 		# create the loyalty point ledger entry if the customer is enrolled in any loyalty program
 		if (
 			not self.is_return
@@ -563,6 +575,9 @@ class SalesInvoice(SellingController):
 		self.db_set("status", "Cancelled")
 		self.db_set("repost_required", 0)
 
+		if self.coupon_code:
+			update_coupon_code_count(self.coupon_code, "cancelled")
+
 		if (
 			frappe.db.get_single_value("Selling Settings", "sales_update_frequency") == "Each Transaction"
 		):