2015-03-03 09:25:30 +00:00
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# Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
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2015-02-17 05:41:11 +00:00
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# License: GNU General Public License v3. See license.txt
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from __future__ import unicode_literals
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import json
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2015-02-23 10:31:33 +00:00
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import frappe
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from frappe import _
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2015-02-17 05:41:11 +00:00
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from frappe.utils import cint, flt, rounded
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from erpnext.setup.utils import get_company_currency
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2015-02-23 06:28:15 +00:00
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from erpnext.controllers.accounts_controller import validate_conversion_rate, \
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validate_taxes_and_charges, validate_inclusive_tax
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2015-02-17 05:41:11 +00:00
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2015-02-18 06:53:18 +00:00
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class calculate_taxes_and_totals(object):
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def __init__(self, doc):
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self.doc = doc
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self.calculate()
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def calculate(self):
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self.discount_amount_applied = False
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self._calculate()
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if self.doc.meta.get_field("discount_amount"):
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self.apply_discount_amount()
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2015-02-17 07:20:51 +00:00
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if self.doc.doctype in ["Sales Invoice", "Purchase Invoice"]:
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2015-02-17 05:41:11 +00:00
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self.calculate_total_advance()
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def _calculate(self):
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2015-02-20 09:10:35 +00:00
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self.calculate_item_values()
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self.initialize_taxes()
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self.determine_exclusive_rate()
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self.calculate_net_total()
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self.calculate_taxes()
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self.calculate_totals()
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self._cleanup()
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def validate_conversion_rate(self):
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# validate conversion rate
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company_currency = get_company_currency(self.doc.company)
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if not self.doc.currency or self.doc.currency == company_currency:
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self.doc.currency = company_currency
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self.doc.conversion_rate = 1.0
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else:
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validate_conversion_rate(self.doc.currency, self.doc.conversion_rate,
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self.doc.meta.get_label("conversion_rate"), self.doc.company)
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self.doc.conversion_rate = flt(self.doc.conversion_rate)
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def calculate_item_values(self):
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if not self.discount_amount_applied:
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for item in self.doc.get("items"):
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self.doc.round_floats_in(item)
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if item.discount_percentage == 100:
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item.rate = 0.0
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elif not item.rate:
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item.rate = flt(item.price_list_rate *
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(1.0 - (item.discount_percentage / 100.0)), item.precision("rate"))
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item.net_rate = item.rate
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item.amount = flt(item.rate * item.qty, item.precision("amount"))
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item.net_amount = item.amount
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self._set_in_company_currency(item, ["price_list_rate", "rate", "net_rate", "amount", "net_amount"])
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item.item_tax_amount = 0.0
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def _set_in_company_currency(self, doc, fields):
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"""set values in base currency"""
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for f in fields:
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val = flt(flt(doc.get(f), doc.precision(f)) * self.doc.conversion_rate, doc.precision("base_" + f))
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doc.set("base_" + f, val)
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def initialize_taxes(self):
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for tax in self.doc.get("taxes"):
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2015-02-28 13:41:51 +00:00
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if not self.discount_amount_applied:
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validate_taxes_and_charges(tax)
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validate_inclusive_tax(tax, self.doc)
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tax.item_wise_tax_detail = {}
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tax_fields = ["total", "tax_amount_after_discount_amount",
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"tax_amount_for_current_item", "grand_total_for_current_item",
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"tax_fraction_for_current_item", "grand_total_fraction_for_current_item"]
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2015-02-22 19:36:00 +00:00
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if tax.charge_type != "Actual" and \
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not (self.discount_amount_applied and self.doc.apply_discount_on=="Grand Total"):
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tax_fields.append("tax_amount")
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for fieldname in tax_fields:
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tax.set(fieldname, 0.0)
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self.doc.round_floats_in(tax)
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def determine_exclusive_rate(self):
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if not any((cint(tax.included_in_print_rate) for tax in self.doc.get("taxes"))):
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return
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for item in self.doc.get("items"):
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item_tax_map = self._load_item_tax_rate(item.item_tax_rate)
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cumulated_tax_fraction = 0
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for i, tax in enumerate(self.doc.get("taxes")):
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tax.tax_fraction_for_current_item = self.get_current_tax_fraction(tax, item_tax_map)
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if i==0:
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tax.grand_total_fraction_for_current_item = 1 + tax.tax_fraction_for_current_item
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else:
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tax.grand_total_fraction_for_current_item = \
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self.doc.get("taxes")[i-1].grand_total_fraction_for_current_item \
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+ tax.tax_fraction_for_current_item
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cumulated_tax_fraction += tax.tax_fraction_for_current_item
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if cumulated_tax_fraction and not self.discount_amount_applied and item.qty:
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item.net_amount = flt(item.amount / (1 + cumulated_tax_fraction), item.precision("net_amount"))
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item.net_rate = flt(item.net_amount / item.qty, item.precision("net_rate"))
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item.discount_percentage = flt(item.discount_percentage, item.precision("discount_percentage"))
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self._set_in_company_currency(item, ["net_rate", "net_amount"])
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# below part need to be fixed???
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# if item.discount_percentage == 100:
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# item.price_list_rate = item.net_rate
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# item.base_price_list_rate = flt(item.price_list_rate*self.doc.conversion_rate,
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# self.doc.precision("base_price_list_rate", item))
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# item.rate = item.base_rate = item.net_rate = item.base_net_rate = 0.0
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# else:
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# item.base_price_list_rate = flt(item.net_rate / (1 - (item.discount_percentage / 100.0)),
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# self.doc.precision("price_list_rate", item))
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def _load_item_tax_rate(self, item_tax_rate):
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return json.loads(item_tax_rate) if item_tax_rate else {}
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def get_current_tax_fraction(self, tax, item_tax_map):
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"""
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Get tax fraction for calculating tax exclusive amount
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from tax inclusive amount
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"""
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current_tax_fraction = 0
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if cint(tax.included_in_print_rate):
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tax_rate = self._get_tax_rate(tax, item_tax_map)
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if tax.charge_type == "On Net Total":
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current_tax_fraction = tax_rate / 100.0
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elif tax.charge_type == "On Previous Row Amount":
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current_tax_fraction = (tax_rate / 100.0) * \
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self.doc.get("taxes")[cint(tax.row_id) - 1].tax_fraction_for_current_item
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elif tax.charge_type == "On Previous Row Total":
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current_tax_fraction = (tax_rate / 100.0) * \
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self.doc.get("taxes")[cint(tax.row_id) - 1].grand_total_fraction_for_current_item
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return current_tax_fraction
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def _get_tax_rate(self, tax, item_tax_map):
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if item_tax_map.has_key(tax.account_head):
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return flt(item_tax_map.get(tax.account_head), self.doc.precision("rate", tax))
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else:
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return tax.rate
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def calculate_net_total(self):
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2015-02-22 20:10:01 +00:00
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self.doc.total = self.doc.base_total = self.doc.net_total = self.doc.base_net_total = 0.0
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for item in self.doc.get("items"):
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self.doc.total += item.amount
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self.doc.base_total += item.base_amount
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self.doc.net_total += item.net_amount
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self.doc.base_net_total += item.base_net_amount
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self.doc.round_floats_in(self.doc, ["total", "base_total", "net_total", "base_net_total"])
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def calculate_taxes(self):
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# maintain actual tax rate based on idx
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actual_tax_dict = dict([[tax.idx, flt(tax.tax_amount, tax.precision("tax_amount"))]
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for tax in self.doc.get("taxes") if tax.charge_type == "Actual"])
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for n, item in enumerate(self.doc.get("items")):
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item_tax_map = self._load_item_tax_rate(item.item_tax_rate)
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for i, tax in enumerate(self.doc.get("taxes")):
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# tax_amount represents the amount of tax for the current step
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current_tax_amount = self.get_current_tax_amount(item, tax, item_tax_map)
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# Adjust divisional loss to the last item
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if tax.charge_type == "Actual":
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actual_tax_dict[tax.idx] -= current_tax_amount
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if n == len(self.doc.get("items")) - 1:
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current_tax_amount += actual_tax_dict[tax.idx]
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2015-02-22 17:33:07 +00:00
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# accumulate tax amount into tax.tax_amount
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if tax.charge_type != "Actual" and \
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not (self.discount_amount_applied and self.doc.apply_discount_on=="Grand Total"):
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tax.tax_amount += current_tax_amount
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# store tax_amount for current item as it will be used for
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# charge type = 'On Previous Row Amount'
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tax.tax_amount_for_current_item = current_tax_amount
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# set tax after discount
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tax.tax_amount_after_discount_amount += current_tax_amount
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if getattr(tax, "category", None):
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# if just for valuation, do not add the tax amount in total
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# hence, setting it as 0 for further steps
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current_tax_amount = 0.0 if (tax.category == "Valuation") \
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else current_tax_amount
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current_tax_amount *= -1.0 if (tax.add_deduct_tax == "Deduct") else 1.0
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# Calculate tax.total viz. grand total till that step
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# note: grand_total_for_current_item contains the contribution of
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# item's amount, previously applied tax and the current tax on that item
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if i==0:
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tax.grand_total_for_current_item = flt(item.net_amount + current_tax_amount, tax.precision("total"))
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else:
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tax.grand_total_for_current_item = \
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2015-02-25 10:25:57 +00:00
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flt(self.doc.get("taxes")[i-1].grand_total_for_current_item + current_tax_amount, tax.precision("total"))
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# in tax.total, accumulate grand total of each item
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tax.total += tax.grand_total_for_current_item
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# set precision in the last item iteration
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if n == len(self.doc.get("items")) - 1:
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self.round_off_totals(tax)
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# adjust Discount Amount loss in last tax iteration
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if i == (len(self.doc.get("taxes")) - 1) and self.discount_amount_applied \
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and self.doc.discount_amount:
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self.adjust_discount_amount_loss(tax)
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def get_current_tax_amount(self, item, tax, item_tax_map):
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tax_rate = self._get_tax_rate(tax, item_tax_map)
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current_tax_amount = 0.0
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if tax.charge_type == "Actual":
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# distribute the tax amount proportionally to each item row
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actual = flt(tax.tax_amount, tax.precision("tax_amount"))
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current_tax_amount = item.net_amount*actual / self.doc.net_total if self.doc.net_total else 0.0
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elif tax.charge_type == "On Net Total":
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current_tax_amount = (tax_rate / 100.0) * item.net_amount
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elif tax.charge_type == "On Previous Row Amount":
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current_tax_amount = (tax_rate / 100.0) * \
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self.doc.get("taxes")[cint(tax.row_id) - 1].tax_amount_for_current_item
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elif tax.charge_type == "On Previous Row Total":
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current_tax_amount = (tax_rate / 100.0) * \
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self.doc.get("taxes")[cint(tax.row_id) - 1].grand_total_for_current_item
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current_tax_amount = flt(current_tax_amount, tax.precision("tax_amount"))
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self.set_item_wise_tax(item, tax, tax_rate, current_tax_amount)
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return current_tax_amount
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def set_item_wise_tax(self, item, tax, tax_rate, current_tax_amount):
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# store tax breakup for each item
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key = item.item_code or item.item_name
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item_wise_tax_amount = current_tax_amount*self.doc.conversion_rate
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if tax.item_wise_tax_detail.get(key):
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item_wise_tax_amount += tax.item_wise_tax_detail[key][1]
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tax.item_wise_tax_detail[key] = [tax_rate,flt(item_wise_tax_amount, tax.precision("base_tax_amount"))]
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def round_off_totals(self, tax):
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tax.total = flt(tax.total, tax.precision("total"))
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tax.tax_amount = flt(tax.tax_amount, tax.precision("tax_amount"))
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tax.tax_amount_after_discount_amount = flt(tax.tax_amount_after_discount_amount, tax.precision("tax_amount"))
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self._set_in_company_currency(tax, ["total", "tax_amount", "tax_amount_after_discount_amount"])
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def adjust_discount_amount_loss(self, tax):
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2015-02-20 09:10:35 +00:00
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discount_amount_loss = self.doc.grand_total - flt(self.doc.discount_amount) - tax.total
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2015-02-17 05:41:11 +00:00
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tax.tax_amount_after_discount_amount = flt(tax.tax_amount_after_discount_amount +
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discount_amount_loss, self.doc.precision("tax_amount", tax))
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tax.total = flt(tax.total + discount_amount_loss, self.doc.precision("total", tax))
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def calculate_totals(self):
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2015-02-20 09:10:35 +00:00
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self.doc.grand_total = flt(self.doc.get("taxes")[-1].total
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if self.doc.get("taxes") else self.doc.net_total)
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2015-02-17 05:41:11 +00:00
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2015-02-17 07:20:51 +00:00
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if self.doc.doctype in ["Quotation", "Sales Order", "Delivery Note", "Sales Invoice"]:
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2015-02-20 09:10:35 +00:00
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self.doc.base_grand_total = flt(self.doc.grand_total * self.doc.conversion_rate) \
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if self.doc.total_taxes_and_charges else self.doc.base_net_total
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2015-02-17 05:41:11 +00:00
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else:
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2015-02-20 09:10:35 +00:00
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self.doc.taxes_and_charges_added, self.taxes_and_charges_deducted = 0.0, 0.0
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2015-02-17 05:41:11 +00:00
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for tax in self.doc.get("taxes"):
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if tax.category in ["Valuation and Total", "Total"]:
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if tax.add_deduct_tax == "Add":
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2015-02-20 09:10:35 +00:00
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self.doc.taxes_and_charges_added += flt(tax.tax_amount)
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2015-02-17 05:41:11 +00:00
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else:
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2015-02-20 09:10:35 +00:00
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self.doc.taxes_and_charges_deducted += flt(tax.tax_amount)
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2015-02-17 05:41:11 +00:00
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2015-02-20 09:10:35 +00:00
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self.doc.round_floats_in(self.doc, ["taxes_and_charges_added", "taxes_and_charges_deducted"])
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2015-02-17 05:41:11 +00:00
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2015-02-20 09:10:35 +00:00
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self.doc.base_grand_total = flt(self.doc.grand_total * self.doc.conversion_rate) \
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if (self.doc.taxes_and_charges_added or self.doc.taxes_and_charges_deducted) \
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else self.doc.base_net_total
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2015-02-17 05:41:11 +00:00
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2015-02-20 09:10:35 +00:00
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self._set_in_company_currency(self.doc, ["taxes_and_charges_added", "taxes_and_charges_deducted"])
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2015-02-17 05:41:11 +00:00
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2015-02-20 09:10:35 +00:00
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self.doc.total_taxes_and_charges = flt(self.doc.grand_total - self.doc.net_total,
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self.doc.precision("total_taxes_and_charges"))
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2015-02-17 05:41:11 +00:00
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|
2015-02-20 09:10:35 +00:00
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self._set_in_company_currency(self.doc, ["total_taxes_and_charges"])
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self.doc.round_floats_in(self.doc, ["grand_total", "base_grand_total"])
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2015-02-17 05:41:11 +00:00
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if self.doc.meta.get_field("rounded_total"):
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self.doc.rounded_total = rounded(self.doc.grand_total)
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2015-02-20 09:10:35 +00:00
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if self.doc.meta.get_field("base_rounded_total"):
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self.doc.base_rounded_total = rounded(self.doc.base_grand_total)
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2015-02-17 05:41:11 +00:00
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def _cleanup(self):
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for tax in self.doc.get("taxes"):
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tax.item_wise_tax_detail = json.dumps(tax.item_wise_tax_detail, separators=(',', ':'))
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def apply_discount_amount(self):
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if self.doc.discount_amount:
|
2015-02-23 10:31:33 +00:00
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if not self.doc.apply_discount_on:
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frappe.throw(_("Please select Apply Discount On"))
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|
2015-02-17 05:41:11 +00:00
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self.doc.base_discount_amount = flt(self.doc.discount_amount * self.doc.conversion_rate,
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self.doc.precision("base_discount_amount"))
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|
2015-02-20 09:10:35 +00:00
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total_for_discount_amount = self.get_total_for_discount_amount()
|
2015-03-04 09:36:56 +00:00
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taxes = self.doc.get("taxes")
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net_total = 0
|
2015-02-17 05:41:11 +00:00
|
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|
2015-02-20 09:10:35 +00:00
|
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if total_for_discount_amount:
|
2015-02-17 05:41:11 +00:00
|
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|
# calculate item amount after Discount Amount
|
2015-03-04 09:36:56 +00:00
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for i, item in enumerate(self.doc.get("items")):
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distributed_amount = flt(self.doc.discount_amount) * \
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item.net_amount / total_for_discount_amount
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|
2015-02-20 09:10:35 +00:00
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item.net_amount = flt(item.net_amount - distributed_amount, item.precision("net_amount"))
|
2015-03-04 09:36:56 +00:00
|
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|
net_total += item.net_amount
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|
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|
# discount amount rounding loss adjustment if no taxes
|
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|
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if (not taxes or self.doc.apply_discount_on == "Net Total") \
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and i == len(self.doc.get("items")) - 1:
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discount_amount_loss = flt(self.doc.total - net_total - self.doc.discount_amount,
|
|
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self.doc.precision("net_total"))
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item.net_amount = flt(item.net_amount + discount_amount_loss,
|
|
|
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item.precision("net_amount"))
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|
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|
2015-02-20 09:10:35 +00:00
|
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|
item.net_rate = flt(item.net_amount / item.qty, item.precision("net_rate"))
|
2015-03-04 09:36:56 +00:00
|
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|
2015-02-20 09:10:35 +00:00
|
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|
self._set_in_company_currency(item, ["net_rate", "net_amount"])
|
2015-02-17 05:41:11 +00:00
|
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|
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|
self.discount_amount_applied = True
|
|
|
|
self._calculate()
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|
|
else:
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|
self.doc.base_discount_amount = 0
|
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|
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|
2015-02-20 09:10:35 +00:00
|
|
|
def get_total_for_discount_amount(self):
|
2015-02-22 19:36:00 +00:00
|
|
|
if self.doc.apply_discount_on == "Net Total":
|
|
|
|
return self.doc.net_total
|
2015-02-20 09:10:35 +00:00
|
|
|
else:
|
|
|
|
actual_taxes_dict = {}
|
2015-02-17 05:41:11 +00:00
|
|
|
|
2015-02-20 09:10:35 +00:00
|
|
|
for tax in self.doc.get("taxes"):
|
|
|
|
if tax.charge_type == "Actual":
|
|
|
|
actual_taxes_dict.setdefault(tax.idx, tax.tax_amount)
|
|
|
|
elif tax.row_id in actual_taxes_dict:
|
|
|
|
actual_tax_amount = flt(actual_taxes_dict.get(tax.row_id, 0)) * flt(tax.rate) / 100
|
|
|
|
actual_taxes_dict.setdefault(tax.idx, actual_tax_amount)
|
2015-02-17 05:41:11 +00:00
|
|
|
|
2015-02-20 09:10:35 +00:00
|
|
|
return flt(self.doc.grand_total - sum(actual_taxes_dict.values()), self.doc.precision("grand_total"))
|
2015-02-17 05:41:11 +00:00
|
|
|
|
|
|
|
|
2015-02-24 04:12:24 +00:00
|
|
|
def calculate_total_advance(self):
|
|
|
|
if self.doc.docstatus < 2:
|
2015-02-20 09:10:35 +00:00
|
|
|
total_allocated_amount = sum([flt(adv.allocated_amount, adv.precision("allocated_amount"))
|
2015-02-17 05:41:11 +00:00
|
|
|
for adv in self.doc.get("advances")])
|
|
|
|
|
2015-02-20 09:10:35 +00:00
|
|
|
self.doc.total_advance = flt(total_allocated_amount, self.doc.precision("total_advance"))
|
2015-02-17 05:41:11 +00:00
|
|
|
|
2015-02-18 14:52:59 +00:00
|
|
|
if self.doc.docstatus == 0:
|
2015-02-17 05:41:11 +00:00
|
|
|
self.calculate_outstanding_amount()
|
|
|
|
|
|
|
|
def calculate_outstanding_amount(self):
|
|
|
|
# NOTE:
|
|
|
|
# write_off_amount is only for POS Invoice
|
|
|
|
# total_advance is only for non POS Invoice
|
|
|
|
|
2015-02-17 07:20:51 +00:00
|
|
|
if self.doc.doctype == "Sales Invoice":
|
|
|
|
self.doc.round_floats_in(self.doc, ["base_grand_total", "total_advance", "write_off_amount", "paid_amount"])
|
2015-02-17 05:41:11 +00:00
|
|
|
total_amount_to_pay = self.doc.base_grand_total - self.doc.write_off_amount
|
|
|
|
self.doc.outstanding_amount = flt(total_amount_to_pay - self.doc.total_advance - self.doc.paid_amount,
|
|
|
|
self.doc.precision("outstanding_amount"))
|
|
|
|
else:
|
2015-02-17 07:20:51 +00:00
|
|
|
self.doc.round_floats_in(self.doc, ["total_advance", "write_off_amount"])
|
2015-02-17 05:41:11 +00:00
|
|
|
self.doc.total_amount_to_pay = flt(self.doc.base_grand_total - self.doc.write_off_amount,
|
|
|
|
self.doc.precision("total_amount_to_pay"))
|
|
|
|
self.doc.outstanding_amount = flt(self.doc.total_amount_to_pay - self.doc.total_advance,
|
|
|
|
self.doc.precision("outstanding_amount"))
|