brotherton-erpnext/erpnext/patches/v6_0/multi_currency.py

# Copyright (c) 2013, Web Notes Technologies Pvt. Ltd. and Contributors
# License: GNU General Public License v3. See license.txt

from __future__ import unicode_literals
import frappe

def execute():
	# Reload doctype
	for dt in ("Account", "GL Entry", "Journal Entry", 
		"Journal Entry Account", "Sales Invoice", "Purchase Invoice", "Customer", "Supplier"):
			frappe.reload_doctype(dt)
			
	for company in frappe.get_all("Company", fields=["name", "default_currency", "default_receivable_account"]):
		
		# update currency in account and gl entry as per company currency
		frappe.db.sql("""update `tabAccount` set account_currency = %s 
			where ifnull(account_currency, '') = '' and company=%s""", (company.default_currency, company.name))
		
		# update newly introduced field's value in sales / purchase invoice
		frappe.db.sql("""
			update 
				`tabSales Invoice`
			set 
				base_paid_amount=paid_amount,
				base_write_off_amount=write_off_amount,
				party_account_currency=%s
			where company=%s
		""", (company.default_currency, company.name))
		
		frappe.db.sql("""
			update 
				`tabPurchase Invoice`
			set 
				base_write_off_amount=write_off_amount,
				party_account_currency=%s
			where company=%s
		""", (company.default_currency, company.name))
		
		# update exchange rate, debit/credit in account currency in Journal Entry
		frappe.db.sql("""update `tabJournal Entry` set exchange_rate=1""")
	
		frappe.db.sql("""
			update
				`tabJournal Entry Account` jea, `tabJournal Entry` je
			set 
				debit_in_account_currency=debit,
				credit_in_account_currency=credit,
				account_currency=%s
			where
				jea.parent = je.name
				and je.company=%s
		""", (company.default_currency, company.name))
	
		# update debit/credit in account currency in GL Entry
		frappe.db.sql("""
			update
				`tabGL Entry`
			set 
				debit_in_account_currency=debit,
				credit_in_account_currency=credit,
				account_currency=%s
			where
				company=%s
		""", (company.default_currency, company.name))
		
		# Set party account if default currency of party other than company's default currency
		for dt in ("Customer", "Supplier"):
			parties = frappe.get_all(dt)
			for p in parties:
				# Get party GL Entries
				party_gle = frappe.db.get_value("GL Entry", {"party_type": dt, "party": p.name, 
					"company": company.name}, ["account", "account_currency"], as_dict=True)
					
				party = frappe.get_doc(dt, p.name)
				
				# set party account currency
				if party_gle or not party.party_account_currency:
					party.party_account_currency = company.default_currency

				# Add default receivable /payable account if not exists 
				# and currency is other than company currency
				if party.party_account_currency and party.party_account_currency != company.default_currency:
					party_account_exists = False
					for d in party.get("accounts"):
						if d.company == company.name:
							party_account_exists = True
							break
					
					if not party_account_exists:
						party_account = party_gle.account if party_gle else company.default_receivable_account
						if party_account:
							party.append("accounts", {
								"company": company.name,
								"account": party_account
							})
				
				party.flags.ignore_mandatory = True
				party.save()