Party model patch

- Create receivable / payable account, set them in company
	- Set party in JV and GL Entry
	- Delete all exisintg individual party account

erpnext/patches/v4_2/party_model.py

@@ -5,6 +5,85 @@ from __future__ import unicode_literals
 import frappe
 
 def execute():
+	try:
 		frappe.reload_doc("accounts", "doctype", "account")
+		receivable_payable_accounts = create_receivable_payable_account()
+		set_party_in_jv_and_gl_entry(receivable_payable_accounts)
+		delete_individual_party_account(receivable_payable_accounts)
+	except:
+		print frappe.get_traceback()
+		pass
+
+
+def link_warehouse_account():
 	frappe.db.sql("""update tabAccount set warehouse=master_name
 		where ifnull(account_type, '') = 'Warehouse' and ifnull(master_name, '') != ''""")
+
+def create_receivable_payable_account():
+	receivable_payable_accounts = frappe._dict()
+
+	def _create_account(args):
+		account = frappe.new_doc("Account")
+		account.group_or_ledger = "Ledger"
+		account.update(args)
+		account.insert()
+
+		frappe.db.set_value("Company", args["company"],
+			("receivables_group" if args["account_type"]=="Receivable" else "payables_group"), account.name)
+
+		receivable_payable_accounts.setdefault(args["company"], {}).setdefault(args["account_type"], account.name)
+
+	for company in frappe.db.sql_list("select name from tabCompany"):
+		_create_account({
+				"account_name": "Debtors",
+				"account_type": "Receivable",
+				"company": company,
+				"parent_account": get_parent_account(company, "Customer")
+			})
+
+		_create_account({
+			"account_name": "Creditors",
+			"account_type": "Payable",
+			"company": company,
+			"parent_account": get_parent_account(company, "Supplier")
+		})
+
+	return receivable_payable_accounts
+
+def get_parent_account(company, master_type):
+	parent_account = frappe.db.get_value("Company", company,
+		"receivables_group" if master_type=="Customer" else "payables_group")
+	if not parent_account:
+		parent_account = frappe.db.get_value("Account", {"company": company,
+			"account_name": "Accounts Receivable" if master_type=="Customer" else "Accounts Payable"})
+
+	if not parent_account:
+		parent_account = frappe.db.sql_list("""select parent_account from tabAccount
+			where company=%s and ifnull(master_type, '')=%s and ifnull(master_name, '')!='' limit 1""",
+			(company, master_type))
+		parent_account = parent_account[0][0] if parent_account else None
+
+	return parent_account
+
+def set_party_in_jv_and_gl_entry(receivable_payable_accounts):
+	accounts = frappe.db.sql("""select name, master_type, master_name, company from `tabAccount`
+		where ifnull(master_type, '') in ('Customer', 'Supplier') and ifnull(master_name, '') != ''""", as_dict=1)
+
+	account_map = frappe._dict()
+	for d in accounts:
+		account_map.setdefault(d.name, d)
+
+	for dt in ["Journal Voucher Detail", "GL Entry"]:
+		records = frappe.db.sql("""select name, account from `tab%s` where account in (%s)""" %
+			(dt, ", ".join(['%s']*len(account_map))), tuple(account_map.keys()))
+		for d in records:
+			account_details = account_map.get(d.account, {})
+			account_type = "Receivable" if account_details.get("master_type")=="Customer" else "Payable"
+			new_account = receivable_payable_accounts[account_details.get("company")][account_type]
+
+			frappe.db.sql("update `tab{0}` set account=%s, party_type=%s, party=%s where name=%s".format(dt),
+				(new_account, account_details.get("master_type"), account_details.get("master_name"), d.name))
+
+def delete_individual_party_account():
+	frappe.db.sql("""delete from `tabAccount` where ifnull(master_type, '') in ('Customer', 'Supplier')
+		and ifnull(master_name, '') != ''""")