feat: coupon_code and referral_sales_partner functionality

erpnext/shopping_cart/cart.py

@@ -537,3 +537,29 @@ def get_address_territory(address_name):
 
 def show_terms(doc):
 	return doc.tc_name
+
+@frappe.whitelist(allow_guest=True)
+def apply_coupon_code(applied_code,applied_referral_sales_partner):
+	quotation = True
+	if applied_code:
+		coupon_list=frappe.get_all('Coupon Code', filters={"docstatus": ("<", "2"), 'coupon_code':applied_code }, fields=['name'])
+		if coupon_list:
+			coupon_name=coupon_list[0].name
+			from erpnext.accounts.doctype.pricing_rule.utils import validate_coupon_code
+			validate_coupon_code(coupon_name)
+			quotation = _get_cart_quotation()
+			quotation.coupon_code=coupon_name
+			quotation.flags.ignore_permissions = True
+			quotation.save()
+			if applied_referral_sales_partner:
+				sales_partner_list=frappe.get_all('Sales Partner', filters={'docstatus': 0, 'referral_code':applied_referral_sales_partner }, fields=['name'])
+				if sales_partner_list:
+					sales_partner_name=sales_partner_list[0].name
+					quotation.referral_sales_partner=sales_partner_name
+					quotation.flags.ignore_permissions = True
+					quotation.save()
+		else:
+			frappe.throw(_("Please enter valid coupon code !!"))
+	else:
+		frappe.throw(_("Please enter coupon code !!"))
+	return quotation

erpnext/shopping_cart/doctype/shopping_cart_settings/shopping_cart_settings.json

@@ -275,6 +275,40 @@
      "translatable": 0,
      "unique": 0
     },
+    {
+     "allow_bulk_edit": 0, 
+     "allow_in_quick_entry": 0, 
+     "allow_on_submit": 0, 
+     "bold": 0, 
+     "collapsible": 0, 
+     "columns": 0, 
+     "depends_on": "", 
+     "fetch_if_empty": 0, 
+     "fieldname": "show_apply_coupon_code_in_website", 
+     "fieldtype": "Check", 
+     "hidden": 0, 
+     "ignore_user_permissions": 0, 
+     "ignore_xss_filter": 0, 
+     "in_filter": 0, 
+     "in_global_search": 0, 
+     "in_list_view": 0, 
+     "in_standard_filter": 0, 
+     "label": "Show Apply Coupon Code", 
+     "length": 0, 
+     "no_copy": 0, 
+     "permlevel": 0, 
+     "precision": "", 
+     "print_hide": 0, 
+     "print_hide_if_no_value": 0, 
+     "read_only": 0, 
+     "remember_last_selected_value": 0, 
+     "report_hide": 0, 
+     "reqd": 0, 
+     "search_index": 0, 
+     "set_only_once": 0, 
+     "translatable": 0, 
+     "unique": 0
+    },
     {
      "allow_bulk_edit": 0,
      "allow_in_quick_entry": 0,