Merge branch 'develop' into po-payment-terms
diff --git a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.js b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.js
index bda9f41..87ab31f 100644
--- a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.js
+++ b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.js
@@ -570,4 +570,4 @@
 	company: function(frm) {
 		erpnext.accounts.dimensions.update_dimension(frm, frm.doctype);
 	},
-})
+})
\ No newline at end of file
diff --git a/erpnext/buying/doctype/purchase_order/purchase_order.py b/erpnext/buying/doctype/purchase_order/purchase_order.py
index eaa502f..f68d819 100644
--- a/erpnext/buying/doctype/purchase_order/purchase_order.py
+++ b/erpnext/buying/doctype/purchase_order/purchase_order.py
@@ -489,15 +489,13 @@
 		},
 	}
 
-	if frappe.get_single("Accounts Settings").automatically_fetch_payment_terms == 1:
-		fields["Payment Schedule"] = {
-			"doctype": "Payment Schedule",
-			"add_if_empty": True
-		}
-
 	doc = get_mapped_doc("Purchase Order", source_name,	fields,
 		target_doc, postprocess, ignore_permissions=ignore_permissions)
 
+	automatically_fetch_payment_terms = cint(frappe.db.get_single_value('Accounts Settings', 'automatically_fetch_payment_terms'))
+	if automatically_fetch_payment_terms:
+		doc.set_payment_schedule()
+
 	return doc
 
 @frappe.whitelist()
diff --git a/erpnext/buying/doctype/purchase_order/test_purchase_order.py b/erpnext/buying/doctype/purchase_order/test_purchase_order.py
index 8563b97..474c9cf 100644
--- a/erpnext/buying/doctype/purchase_order/test_purchase_order.py
+++ b/erpnext/buying/doctype/purchase_order/test_purchase_order.py
@@ -968,8 +968,25 @@
 		# To test if the PO does NOT have a Blanket Order
 		self.assertEqual(po_doc.items[0].blanket_order, None)
 
+	def test_payment_terms_are_fetched_when_creating_purchase_invoice(self):
+		from erpnext.accounts.doctype.payment_entry.test_payment_entry import create_payment_terms_template
+		from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice
+		from erpnext.selling.doctype.sales_order.test_sales_order import automatically_fetch_payment_terms, compare_payment_schedules
 
+		automatically_fetch_payment_terms()
 
+		po = create_purchase_order(qty=10, rate=100, do_not_save=1)
+		create_payment_terms_template()
+		po.payment_terms_template = 'Test Receivable Template'
+		po.submit()
+
+		pi = make_purchase_invoice(qty=10, rate=100, do_not_save=1)
+		pi.items[0].purchase_order = po.name
+		pi.items[0].po_detail = po.items[0].name
+		pi.insert()
+
+		# self.assertEqual(po.payment_terms_template, pi.payment_terms_template)
+		compare_payment_schedules(self, po, pi)
 
 def make_pr_against_po(po, received_qty=0):
 	pr = make_purchase_receipt(po)
diff --git a/erpnext/controllers/accounts_controller.py b/erpnext/controllers/accounts_controller.py
index bf4ab1a..c793c19 100644
--- a/erpnext/controllers/accounts_controller.py
+++ b/erpnext/controllers/accounts_controller.py
@@ -1110,7 +1110,14 @@
 				data = get_payment_terms(self.payment_terms_template, posting_date, grand_total, base_grand_total)
 				for item in data:
 					self.append("payment_schedule", item)
-			else:
+
+			elif self.doctype in ["Sales Invoice", "Purchase Invoice"]:
+				po_or_so, doctype, fieldname = self.get_order_details()
+
+				if self.linked_order_has_payment_terms(po_or_so, fieldname, doctype):
+					self.fetch_payment_terms_from_order(po_or_so, doctype)
+
+			elif self.doctype not in ["Purchase Receipt"]:
 				data = dict(due_date=due_date, invoice_portion=100, payment_amount=grand_total, base_payment_amount=base_grand_total)
 				self.append("payment_schedule", data)
 		else:
@@ -1123,6 +1130,63 @@
 					d.base_payment_amount = flt(base_grand_total * self.get("conversion_rate"), d.precision('base_payment_amount'))
 
 
+	def get_order_details(self):
+		if self.doctype == "Sales Invoice":
+			po_or_so = self.get('items')[0].get('sales_order')
+			po_or_so_doctype = "Sales Order"
+			po_or_so_doctype_name = "sales_order"
+
+		else:
+			po_or_so = self.get('items')[0].get('purchase_order')
+			po_or_so_doctype = "Purchase Order"
+			po_or_so_doctype_name = "purchase_order"
+		
+		return po_or_so, po_or_so_doctype, po_or_so_doctype_name
+
+	def linked_order_has_payment_terms(self, po_or_so, fieldname, doctype):
+		if po_or_so and self.all_items_have_same_po_or_so(po_or_so, fieldname):
+			if self.linked_order_has_payment_terms_template(po_or_so, doctype):
+				return True
+			elif self.linked_order_has_payment_schedule(po_or_so):
+				return True
+		
+		return False
+
+	def all_items_have_same_po_or_so(self, po_or_so, fieldname):
+		for item in self.get('items'):
+			if item.get(fieldname) != po_or_so:
+				return False
+		
+		return True
+
+	def linked_order_has_payment_terms_template(self, po_or_so, doctype):
+		return frappe.get_value(doctype, po_or_so, 'payment_terms_template')
+
+	def linked_order_has_payment_schedule(self, po_or_so):
+		return frappe.get_all('Payment Schedule', filters={'parent': po_or_so})
+
+	def fetch_payment_terms_from_order(self, po_or_so, po_or_so_doctype):
+		"""
+			Fetch Payment Terms from Purchase/Sales Order on creating a new Purchase/Sales Invoice.
+		"""
+		po_or_so = frappe.get_cached_doc(po_or_so_doctype, po_or_so)
+
+		self.payment_schedule = []
+		self.payment_terms_template = po_or_so.payment_terms_template
+
+		for schedule in po_or_so.payment_schedule:
+			payment_schedule = {
+				'payment_term': schedule.payment_term,
+				'due_date': schedule.due_date,
+				'invoice_portion': schedule.invoice_portion,
+				'discount_type': schedule.discount_type,
+				'discount': schedule.discount,
+				'base_payment_amount': schedule.base_payment_amount,
+				'payment_amount': schedule.payment_amount,
+				'outstanding': schedule.outstanding
+			}
+			self.append("payment_schedule", payment_schedule)
+
 	def set_due_date(self):
 		due_dates = [d.due_date for d in self.get("payment_schedule") if d.due_date]
 		if due_dates:
@@ -1807,4 +1871,4 @@
 
 @erpnext.allow_regional
 def validate_einvoice_fields(doc):
-	pass
+	pass
\ No newline at end of file
diff --git a/erpnext/selling/doctype/sales_order/sales_order.py b/erpnext/selling/doctype/sales_order/sales_order.py
index 41f57a3..2b9d516 100755
--- a/erpnext/selling/doctype/sales_order/sales_order.py
+++ b/erpnext/selling/doctype/sales_order/sales_order.py
@@ -693,6 +693,10 @@
 		}
 	}, target_doc, postprocess, ignore_permissions=ignore_permissions)
 
+	automatically_fetch_payment_terms = cint(frappe.db.get_single_value('Accounts Settings', 'automatically_fetch_payment_terms'))
+	if automatically_fetch_payment_terms:
+		doclist.set_payment_schedule()
+
 	return doclist
 
 @frappe.whitelist()
diff --git a/erpnext/selling/doctype/sales_order/test_sales_order.py b/erpnext/selling/doctype/sales_order/test_sales_order.py
index 974648d..f4a089b 100644
--- a/erpnext/selling/doctype/sales_order/test_sales_order.py
+++ b/erpnext/selling/doctype/sales_order/test_sales_order.py
@@ -1229,7 +1229,42 @@
 
 		self.assertRaises(frappe.ValidationError, so.cancel)
 
+	def test_payment_terms_are_fetched_when_creating_sales_invoice(self):
+		from erpnext.accounts.doctype.payment_entry.test_payment_entry import create_payment_terms_template
+		from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
 
+		automatically_fetch_payment_terms()
+
+		so = make_sales_order(uom="Nos", do_not_save=1)
+		create_payment_terms_template()
+		so.payment_terms_template = 'Test Receivable Template'
+		so.submit()
+
+		si = create_sales_invoice(qty=10, do_not_save=1)
+		si.items[0].sales_order = so.name
+		si.items[0].so_detail = so.items[0].name
+		si.insert()
+
+		self.assertEqual(so.payment_terms_template, si.payment_terms_template)
+		compare_payment_schedules(self, so, si)
+
+def automatically_fetch_payment_terms(enable=1):
+	accounts_settings = frappe.get_doc("Accounts Settings")
+	accounts_settings.automatically_fetch_payment_terms = enable
+	accounts_settings.save()
+
+def compare_payment_schedules(doc, doc1, doc2):
+	payment_schedule1 = frappe.db.sql("""select payment_term, description, due_date, mode_of_payment, invoice_portion, payment_amount
+		from `tabPayment Schedule`
+		where parenttype=%s and parent=%s
+		order by payment_term asc""", (doc1.doctype, doc1.name), as_dict=1)
+
+	payment_schedule2 = frappe.db.sql("""select payment_term, description, due_date, mode_of_payment, invoice_portion, payment_amount
+		from `tabPayment Schedule`
+		where parenttype=%s and parent=%s
+		order by payment_term asc""", (doc2.doctype, doc2.name), as_dict=1)
+
+	doc.assertEqual(payment_schedule1, payment_schedule2)
 
 def make_sales_order(**args):
 	so = frappe.new_doc("Sales Order")
diff --git a/erpnext/stock/doctype/delivery_note/delivery_note.py b/erpnext/stock/doctype/delivery_note/delivery_note.py
index 4808e94..f99a01b 100644
--- a/erpnext/stock/doctype/delivery_note/delivery_note.py
+++ b/erpnext/stock/doctype/delivery_note/delivery_note.py
@@ -503,6 +503,10 @@
 		}
 	}, target_doc, set_missing_values)
 
+	automatically_fetch_payment_terms = cint(frappe.db.get_single_value('Accounts Settings', 'automatically_fetch_payment_terms'))
+	if automatically_fetch_payment_terms:
+		doc.set_payment_schedule()
+
 	return doc
 
 @frappe.whitelist()
diff --git a/erpnext/stock/doctype/delivery_note/test_delivery_note.py b/erpnext/stock/doctype/delivery_note/test_delivery_note.py
index f981aeb..ca8d8b9 100644
--- a/erpnext/stock/doctype/delivery_note/test_delivery_note.py
+++ b/erpnext/stock/doctype/delivery_note/test_delivery_note.py
@@ -17,7 +17,8 @@
 from erpnext.stock.doctype.serial_no.serial_no import get_serial_nos, SerialNoWarehouseError
 from erpnext.stock.doctype.stock_reconciliation.test_stock_reconciliation \
 	import create_stock_reconciliation, set_valuation_method
-from erpnext.selling.doctype.sales_order.test_sales_order import make_sales_order, create_dn_against_so
+from erpnext.selling.doctype.sales_order.test_sales_order \
+	import make_sales_order, create_dn_against_so, automatically_fetch_payment_terms, compare_payment_schedules
 from erpnext.accounts.doctype.account.test_account import get_inventory_account
 from erpnext.stock.doctype.warehouse.test_warehouse import get_warehouse
 from erpnext.stock.doctype.item.test_item import make_item
@@ -759,6 +760,30 @@
 
 		self.assertTrue("TESTBATCH" in dn.packed_items[0].batch_no, "Batch number not added in packed item")
 
+	def test_payment_terms_are_fetched_when_creating_sales_invoice(self):
+		from erpnext.accounts.doctype.payment_entry.test_payment_entry import create_payment_terms_template
+		from erpnext.accounts.doctype.sales_invoice.test_sales_invoice import create_sales_invoice
+
+		automatically_fetch_payment_terms()
+
+		so = make_sales_order(uom="Nos", do_not_save=1)
+		create_payment_terms_template()
+		so.payment_terms_template = 'Test Receivable Template'
+		so.submit()
+
+		dn = create_dn_against_so(so.name, delivered_qty=10)
+		
+		si = create_sales_invoice(qty=10, do_not_save=1)
+		si.items[0].delivery_note= dn.name
+		si.items[0].dn_detail = dn.items[0].name
+		si.items[0].sales_order = so.name
+		si.items[0].so_detail = so.items[0].name
+
+		si.insert()
+		si.submit()
+
+		self.assertEqual(so.payment_terms_template, si.payment_terms_template)
+		compare_payment_schedules(self, so, si)
 
 def create_delivery_note(**args):
 	dn = frappe.new_doc("Delivery Note")
diff --git a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
index 899d7e8..6b8a410 100644
--- a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
+++ b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
@@ -675,6 +675,10 @@
 		}
 	}, target_doc, set_missing_values)
 
+	automatically_fetch_payment_terms = cint(frappe.db.get_single_value('Accounts Settings', 'automatically_fetch_payment_terms'))
+	if automatically_fetch_payment_terms:
+		doc.set_payment_schedule()
+
 	return doclist
 
 def get_invoiced_qty_map(purchase_receipt):
diff --git a/erpnext/stock/doctype/purchase_receipt/test_purchase_receipt.py b/erpnext/stock/doctype/purchase_receipt/test_purchase_receipt.py
index 82461cb..ee7fe4c 100644
--- a/erpnext/stock/doctype/purchase_receipt/test_purchase_receipt.py
+++ b/erpnext/stock/doctype/purchase_receipt/test_purchase_receipt.py
@@ -1082,6 +1082,31 @@
 
 		self.assertEqual(discrepancy_caused_by_exchange_rate_diff, amount)
 
+	def test_payment_terms_are_fetched_when_creating_purchase_invoice(self):
+		from erpnext.accounts.doctype.payment_entry.test_payment_entry import create_payment_terms_template
+		from erpnext.accounts.doctype.purchase_invoice.test_purchase_invoice import make_purchase_invoice
+		from erpnext.buying.doctype.purchase_order.test_purchase_order import create_purchase_order, make_pr_against_po
+		from erpnext.selling.doctype.sales_order.test_sales_order import automatically_fetch_payment_terms, compare_payment_schedules
+
+		automatically_fetch_payment_terms()
+
+		po = create_purchase_order(qty=10, rate=100, do_not_save=1)
+		create_payment_terms_template()
+		po.payment_terms_template = 'Test Receivable Template'
+		po.submit()
+
+		pr = make_pr_against_po(po.name, received_qty=10)
+
+		pi = make_purchase_invoice(qty=10, rate=100, do_not_save=1)
+		pi.items[0].purchase_receipt = pr.name
+		pi.items[0].pr_detail = pr.items[0].name
+		pi.items[0].purchase_order = po.name
+		pi.items[0].po_detail = po.items[0].name
+		pi.insert()
+
+		# self.assertEqual(po.payment_terms_template, pi.payment_terms_template)
+		compare_payment_schedules(self, po, pi)
+
 def get_sl_entries(voucher_type, voucher_no):
 	return frappe.db.sql(""" select actual_qty, warehouse, stock_value_difference
 		from `tabStock Ledger Entry` where voucher_type=%s and voucher_no=%s