| # ERPNext - web based ERP (http://erpnext.com) |
| # Copyright (C) 2012 Web Notes Technologies Pvt Ltd |
| # |
| # This program is free software: you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation, either version 3 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| |
| from __future__ import unicode_literals |
| import webnotes |
| from webnotes.utils import cint, flt |
| from setup.utils import get_company_currency |
| from webnotes import msgprint, _ |
| import json |
| |
| from controllers.stock_controller import StockController |
| |
| class SellingController(StockController): |
| def validate(self): |
| super(SellingController, self).validate() |
| self.set_total_in_words() |
| |
| def set_total_in_words(self): |
| from webnotes.utils import money_in_words |
| company_currency = get_company_currency(self.doc.company) |
| |
| disable_rounded_total = cint(webnotes.conn.get_value("Global Defaults", None, |
| "disable_rounded_total")) |
| |
| if self.meta.get_field("in_words"): |
| self.doc.in_words = money_in_words(disable_rounded_total and |
| self.doc.grand_total or self.doc.rounded_total, company_currency) |
| if self.meta.get_field("in_words_export"): |
| self.doc.in_words_export = money_in_words(disable_rounded_total and |
| self.doc.grand_total_export or self.doc.rounded_total_export, self.doc.currency) |
| |
| def set_buying_amount(self, stock_ledger_entries = None): |
| from stock.utils import get_buying_amount |
| if not stock_ledger_entries: |
| stock_ledger_entries = self.get_stock_ledger_entries() |
| |
| item_sales_bom = {} |
| for d in self.doclist.get({"parentfield": "packing_details"}): |
| new_d = webnotes._dict(d.fields.copy()) |
| new_d.total_qty = -1 * d.qty |
| item_sales_bom.setdefault(d.parent_item, []).append(new_d) |
| |
| if stock_ledger_entries: |
| for item in self.doclist.get({"parentfield": self.fname}): |
| if item.item_code in self.stock_items or \ |
| (item_sales_bom and item_sales_bom.get(item.item_code)): |
| buying_amount = get_buying_amount(item.item_code, item.warehouse, -1*item.qty, |
| self.doc.doctype, self.doc.name, item.name, stock_ledger_entries, |
| item_sales_bom) |
| |
| item.buying_amount = buying_amount >= 0.01 and buying_amount or 0 |
| webnotes.conn.set_value(item.doctype, item.name, "buying_amount", |
| item.buying_amount) |
| |
| def check_expense_account(self, item): |
| if item.buying_amount and not item.expense_account: |
| msgprint(_("""Expense account is mandatory for item: """) + item.item_code, |
| raise_exception=1) |
| |
| if item.buying_amount and not item.cost_center: |
| msgprint(_("""Cost Center is mandatory for item: """) + item.item_code, |
| raise_exception=1) |
| |
| def calculate_taxes_and_totals(self): |
| self.doc.conversion_rate = flt(self.doc.conversion_rate) |
| self.item_doclist = self.doclist.get({"parentfield": self.fname}) |
| self.tax_doclist = self.doclist.get({"parentfield": "other_charges"}) |
| |
| self.calculate_item_values() |
| self.initialize_taxes() |
| |
| self.determin_exclusive_rate() |
| |
| # TODO |
| # code: save net_total_export on client side |
| # print format: show net_total_export instead of net_total |
| |
| self.calculate_net_total() |
| self.calculate_taxes() |
| self.calculate_totals() |
| # self.calculate_outstanding_amount() |
| |
| # TODO |
| # allocated amount of sales person |
| # total commission |
| |
| self._cleanup() |
| |
| def determin_exclusive_rate(self): |
| if not any((cint(tax.included_in_print_rate) for tax in self.tax_doclist)): |
| # no inclusive tax |
| return |
| |
| for item in self.item_doclist: |
| item_tax_map = self._load_item_tax_rate(item.item_tax_rate) |
| cumulated_tax_fraction = 0 |
| for i, tax in enumerate(self.tax_doclist): |
| if cint(tax.included_in_print_rate): |
| tax.tax_fraction_for_current_item = \ |
| self.get_current_tax_fraction(tax, item_tax_map) |
| else: |
| tax.tax_fraction_for_current_item = 0 |
| |
| if i==0: |
| tax.grand_total_fraction_for_current_item = 1 + \ |
| tax.tax_fraction_for_current_item |
| else: |
| tax.grand_total_fraction_for_current_item = \ |
| self.tax_doclist[i-1].grand_total_fraction_for_current_item \ |
| + tax.tax_fraction_for_current_item |
| |
| cumulated_tax_fraction += tax.tax_fraction_for_current_item |
| |
| if cumulated_tax_fraction: |
| item.basic_rate = flt((item.export_rate * self.doc.conversion_rate) / |
| (1 + cumulated_tax_fraction), self.precision("basic_rate", item)) |
| |
| item.amount = flt(item.basic_rate * item.qty, self.precision("amount", item)) |
| |
| item.base_ref_rate = flt(item.basic_rate / (1 - (item.adj_rate / 100.0)), |
| self.precision("base_ref_rate", item)) |
| |
| def get_current_tax_fraction(self, tax, item_tax_map): |
| """ |
| Get tax fraction for calculating tax exclusive amount |
| from tax inclusive amount |
| """ |
| current_tax_fraction = 0 |
| |
| if cint(tax.included_in_print_rate): |
| tax_rate = self._get_tax_rate(tax, item_tax_map) |
| |
| if tax.charge_type == "On Net Total": |
| current_tax_fraction = tax_rate / 100.0 |
| |
| elif tax.charge_type == "On Previous Row Amount": |
| current_tax_fraction = (tax_rate / 100.0) * \ |
| self.tax_doclist[cint(tax.row_id) - 1].tax_fraction_for_current_item |
| |
| elif tax.charge_type == "On Previous Row Total": |
| current_tax_fraction = (tax_rate / 100.0) * \ |
| self.tax_doclist[cint(tax.row_id) - 1].grand_total_fraction_for_current_item |
| |
| return current_tax_fraction |
| |
| def calculate_item_values(self): |
| def _set_base(item, print_field, base_field): |
| """set values in base currency""" |
| item.fields[base_field] = flt((flt(item.fields[print_field], |
| self.precision(print_field, item)) * self.doc.conversion_rate), |
| self.precision(base_field, item)) |
| |
| for item in self.item_doclist: |
| self.round_floats_in(item) |
| |
| if item.adj_rate == 100: |
| item.ref_rate = item.ref_rate or item.export_rate |
| item.export_rate = 0 |
| else: |
| if item.ref_rate: |
| item.export_rate = flt(item.ref_rate * (1.0 - (item.adj_rate / 100.0)), |
| self.precision("export_rate", item)) |
| else: |
| # assume that print rate and discount are specified |
| item.ref_rate = flt(item.export_rate / (1.0 - (item.adj_rate / 100.0)), |
| self.precision("ref_rate", item)) |
| |
| item.export_amount = flt(item.export_rate * item.qty, |
| self.precision("export_amount", item)) |
| |
| _set_base(item, "ref_rate", "base_ref_rate") |
| _set_base(item, "export_rate", "basic_rate") |
| _set_base(item, "export_amount", "amount") |
| |
| def initialize_taxes(self): |
| for tax in self.tax_doclist: |
| tax.tax_amount = tax.total = 0.0 |
| # temporary fields |
| tax.tax_amount_for_current_item = tax.grand_total_for_current_item = 0.0 |
| tax.item_wise_tax_detail = {} |
| self.validate_on_previous_row(tax) |
| self.validate_inclusive_tax(tax) |
| self.round_floats_in(tax) |
| |
| def calculate_net_total(self): |
| self.doc.net_total = 0 |
| self.doc.net_total_export = 0 |
| |
| for item in self.item_doclist: |
| self.doc.net_total += item.amount |
| self.doc.net_total_export += item.export_amount |
| |
| self.doc.net_total = flt(self.doc.net_total, self.precision("net_total")) |
| self.doc.net_total_export = flt(self.doc.net_total_export, |
| self.precision("net_total_export")) |
| |
| def calculate_taxes(self): |
| for item in self.item_doclist: |
| item_tax_map = self._load_item_tax_rate(item.item_tax_rate) |
| |
| for i, tax in enumerate(self.tax_doclist): |
| # tax_amount represents the amount of tax for the current step |
| current_tax_amount = self.get_current_tax_amount(item, tax, item_tax_map) |
| |
| # case when net total is 0 but there is an actual type charge |
| # in this case add the actual amount to tax.tax_amount |
| # and tax.grand_total_for_current_item for the first such iteration |
| if not (current_tax_amount or self.doc.net_total or tax.tax_amount) and \ |
| tax.charge_type=="Actual": |
| zero_net_total_adjustment = flt(tax.rate, self.precision("tax_amount", tax)) |
| current_tax_amount += zero_net_total_adjustment |
| |
| # store tax_amount for current item as it will be used for |
| # charge type = 'On Previous Row Amount' |
| tax.tax_amount_for_current_item = current_tax_amount |
| |
| # accumulate tax amount into tax.tax_amount |
| tax.tax_amount += tax.tax_amount_for_current_item |
| |
| # Calculate tax.total viz. grand total till that step |
| # note: grand_total_for_current_item contains the contribution of |
| # item's amount, previously applied tax and the current tax on that item |
| if i==0: |
| tax.grand_total_for_current_item = flt(item.amount + |
| current_tax_amount, self.precision("total", tax)) |
| |
| else: |
| tax.grand_total_for_current_item = \ |
| flt(self.tax_doclist[i-1].grand_total_for_current_item + |
| current_tax_amount, self.precision("total", tax)) |
| |
| # in tax.total, accumulate grand total of each item |
| tax.total += tax.grand_total_for_current_item |
| |
| # store tax_breakup for each item |
| # DOUBT: should valuation type amount also be stored? |
| tax.item_wise_tax_detail[item.item_code] = current_tax_amount |
| |
| def calculate_totals(self): |
| self.doc.grand_total = flt(self.tax_doclist and \ |
| self.tax_doclist[-1].total or self.doc.net_total, self.precision("grand_total")) |
| self.doc.grand_total_export = flt(self.doc.grand_total / self.doc.conversion_rate, |
| self.precision("grand_total_export")) |
| |
| self.doc.rounded_total = round(self.doc.grand_total) |
| self.doc.rounded_total_export = round(self.doc.grand_total_export) |
| |
| def get_current_tax_amount(self, item, tax, item_tax_map): |
| tax_rate = self._get_tax_rate(tax, item_tax_map) |
| |
| if tax.charge_type == "Actual": |
| # distribute the tax amount proportionally to each item row |
| actual = flt(tax.rate, self.precision("tax_amount", tax)) |
| current_tax_amount = (self.doc.net_total |
| and ((item.amount / self.doc.net_total) * actual) |
| or 0) |
| elif tax.charge_type == "On Net Total": |
| current_tax_amount = (tax_rate / 100.0) * item.amount |
| elif tax.charge_type == "On Previous Row Amount": |
| current_tax_amount = (tax_rate / 100.0) * \ |
| self.tax_doclist[cint(tax.row_id) - 1].tax_amount_for_current_item |
| elif tax.charge_type == "On Previous Row Total": |
| current_tax_amount = (tax_rate / 100.0) * \ |
| self.tax_doclist[cint(tax.row_id) - 1].grand_total_for_current_item |
| |
| return flt(current_tax_amount, self.precision("tax_amount", tax)) |
| |
| def validate_on_previous_row(self, tax): |
| """ |
| validate if a valid row id is mentioned in case of |
| On Previous Row Amount and On Previous Row Total |
| """ |
| if tax.charge_type in ["On Previous Row Amount", "On Previous Row Total"] and \ |
| (not tax.row_id or cint(tax.row_id) >= tax.idx): |
| msgprint((_("Row") + " # %(idx)s [%(taxes_doctype)s]: " + \ |
| _("Please specify a valid") + " %(row_id_label)s") % { |
| "idx": tax.idx, |
| "taxes_doctype": tax.parenttype, |
| "row_id_label": self.meta.get_label("row_id", |
| parentfield="other_charges") |
| }, raise_exception=True) |
| |
| def validate_inclusive_tax(self, tax): |
| def _on_previous_row_error(tax, row_range): |
| msgprint((_("Row") |
| + " # %(idx)s [%(taxes_doctype)s] [%(charge_type_label)s = \"%(charge_type)s\"]: " |
| + _("If:") + ' "%(inclusive_label)s" = ' + _("checked") + ", " |
| + _("then it is required that:") + " [" + _("Row") + " # %(row_range)s] " |
| + '"%(inclusive_label)s" = ' + _("checked")) % { |
| "idx": tax.idx, |
| "taxes_doctype": tax.doctype, |
| "inclusive_label": self.meta.get_label("included_in_print_rate", |
| parentfield="other_charges"), |
| "charge_type_label": self.meta.get_label("charge_type", |
| parentfield="other_charges"), |
| "charge_type": tax.charge_type, |
| "row_range": row_range |
| }, raise_exception=True) |
| |
| if cint(tax.included_in_print_rate): |
| if tax.charge_type == "Actual": |
| # inclusive cannot be of type Actual |
| msgprint((_("Row") |
| + " # %(idx)s [%(taxes_doctype)s]: %(charge_type_label)s = \"%(charge_type)s\" " |
| + "cannot be included in Item's rate") % { |
| "idx": tax.idx, |
| "taxes_doctype": tax.doctype, |
| "charge_type_label": self.meta.get_label("charge_type", |
| parentfield="other_charges"), |
| "charge_type": tax.charge_type, |
| }, raise_exception=True) |
| elif tax.charge_type == "On Previous Row Amount" and \ |
| not cint(self.tax_doclist[tax.row_id - 1].included_in_print_rate): |
| # referred row should also be inclusive |
| _on_previous_row_error(tax, tax.row_id) |
| elif tax.charge_type == "On Previous Row Total" and \ |
| not all([cint(t.included_in_print_rate) for t in self.tax_doclist[:tax.idx - 1]]): |
| # all rows about this tax should be inclusive |
| _on_previous_row_error(tax, "1 - %d" % (tax.idx - 1,)) |
| |
| def _load_item_tax_rate(self, item_tax_rate): |
| if not item_tax_rate: |
| return {} |
| return json.loads(item_tax_rate) |
| |
| def _get_tax_rate(self, tax, item_tax_map): |
| if item_tax_map.has_key(tax.account_head): |
| return flt(item_tax_map.get(tax.account_head), self.precision("rate", tax)) |
| else: |
| return tax.rate |
| |
| def _cleanup(self): |
| for tax in self.tax_doclist: |
| del tax.fields["grand_total_for_current_item"] |
| del tax.fields["tax_amount_for_current_item"] |
| |
| for fieldname in ("tax_fraction_for_current_item", |
| "grand_total_fraction_for_current_item"): |
| if fieldname in tax.fields: |
| del tax.fields[fieldname] |
| |
| tax.item_wise_tax_detail = json.dumps(tax.item_wise_tax_detail) |
| |
| def validate_order_type(self): |
| valid_types = ["Sales", "Maintenance"] |
| if self.doc.order_type not in valid_types: |
| msgprint(_(self.meta.get_label("order_type")) + " " + |
| _("must be one of") + ": " + comma_or(valid_types), |
| raise_exception=True) |