refactor: validation to prevent recursion with mixed conditions

erpnext/accounts/doctype/pricing_rule/pricing_rule.py

@@ -139,6 +139,7 @@ class PricingRule(Document):
 		self.validate_price_list_with_currency()
 		self.validate_dates()
 		self.validate_condition()
+		self.validate_mixed_with_recursion()
 
 		if not self.margin_type:
 			self.margin_rate_or_amount = 0.0
@@ -308,6 +309,10 @@ class PricingRule(Document):
 		):
 			frappe.throw(_("Invalid condition expression"))
 
+	def validate_mixed_with_recursion(self):
+		if self.mixed_conditions and self.is_recursive:
+			frappe.throw(_("Recursive Discounts with Mixed condition is not supported by the system"))
+
 
 # --------------------------------------------------------------------------------
 

erpnext/accounts/doctype/promotional_scheme/promotional_scheme.py

@@ -146,6 +146,7 @@ class PromotionalScheme(Document):
 
 		self.validate_applicable_for()
 		self.validate_pricing_rules()
+		self.validate_mixed_with_recursion()
 
 	def validate_applicable_for(self):
 		if self.applicable_for:
@@ -177,6 +178,7 @@ class PromotionalScheme(Document):
 				frappe.delete_doc("Pricing Rule", docname.name)
 
 	def on_update(self):
+		self.validate()
 		pricing_rules = (
 			frappe.get_all(
 				"Pricing Rule",
@@ -188,6 +190,15 @@ class PromotionalScheme(Document):
 		)
 		self.update_pricing_rules(pricing_rules)
 
+	def validate_mixed_with_recursion(self):
+		if self.mixed_conditions:
+			if self.product_discount_slabs:
+				for slab in self.product_discount_slabs:
+					if slab.is_recursive:
+						frappe.throw(
+							_("Recursive Discounts with Mixed condition is not supported by the system")
+						)
+
 	def update_pricing_rules(self, pricing_rules):
 		rules = {}
 		count = 0