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https://github.com/NaN-tic/trytond-sale_discount_visible.git
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Compute visible discount when product or quantity changes. Compute visible discount only for out invoices.
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parent
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commit
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2 changed files with 77 additions and 31 deletions
59
invoice.py
59
invoice.py
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@ -2,6 +2,7 @@
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# The COPYRIGHT file at the top level of this repository contains the full
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# copyright notices and license terms.
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from decimal import Decimal
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from trytond.model import fields
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from trytond.pool import Pool, PoolMeta
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from trytond.transaction import Transaction
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@ -12,19 +13,49 @@ __metaclass__ = PoolMeta
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class InvoiceLine:
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__name__ = 'account.invoice.line'
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def update_prices(self):
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res = super(InvoiceLine, self).update_prices()
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if hasattr(self, 'product') and hasattr(self, 'invoice'):
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with Transaction().set_context({
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'price_list': self.invoice.party.sale_price_list,
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'customer': self.invoice.party.id,
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}):
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Product = Pool().get('product.product')
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unit_price = Product.get_sale_price([self.product],
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def update_prices_visible_discount(self):
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if not hasattr(self, 'product') or not hasattr(self, 'invoice'):
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return {}
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with Transaction().set_context({
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'price_list': self.invoice.party.sale_price_list,
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'customer': self.invoice.party.id,
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}):
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Product = Pool().get('product.product')
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gross_unit_price = self.gross_unit_price
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discount = Decimal(0)
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unit_price = Product.get_sale_price([self.product],
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self.quantity or 0)[self.product.id]
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if unit_price:
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res['unit_price'] = unit_price.quantize(
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Decimal(1) / 10 ** self.__class__.unit_price.digits[1])
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res['discount'] = 1 - (res['unit_price'] /
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res['gross_unit_price'])
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if unit_price:
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unit_price_digits = self.__class__.unit_price.digits[1]
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discount_digits = self.__class__.discount.digits[1]
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unit_price = unit_price.quantize(
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Decimal(str(10.0 ** -unit_price_digits)))
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discount = 1 - (unit_price / gross_unit_price)
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discount = discount.quantize(
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Decimal(str(10.0 ** -discount_digits)))
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return {
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'gross_unit_price': gross_unit_price,
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'discount': discount,
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'unit_price': unit_price,
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}
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def on_change_product(self):
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res = super(InvoiceLine, self).on_change_product()
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invoice_type = self.invoice_type or self.invoice and self.invoice.type
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if (invoice_type in ('out_invoice', 'out_credit_note') and
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'gross_unit_price' in res):
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self.gross_unit_price = res['gross_unit_price']
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res.update(self.update_prices_visible_discount())
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return res
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@fields.depends('product', 'quantity', 'invoice_type', 'party', 'invoice',
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'_parent_invoice.type', '_parent_invoice.party')
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def on_change_quantity(self):
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res = {}
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invoice_type = self.invoice_type or self.invoice and self.invoice.type
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if invoice_type in ('out_invoice', 'out_credit_note'):
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res = super(InvoiceLine, self).on_change_product()
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if 'gross_unit_price' in res:
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self.gross_unit_price = res['gross_unit_price']
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res.update(self.update_prices_visible_discount())
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return res
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49
sale.py
49
sale.py
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@ -11,21 +11,36 @@ __metaclass__ = PoolMeta
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class SaleLine:
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__name__ = 'sale.line'
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def update_prices(self):
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if hasattr(self, 'product') and self.discount == Decimal(0):
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self.discount = Decimal(0)
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res = super(SaleLine, self).update_prices()
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Product = Pool().get('product.product')
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gross_unit_price = Product.get_sale_price([self.product],
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self.quantity or 0)[self.product.id]
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if gross_unit_price:
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unit_price_digits = self.__class__.gross_unit_price.digits[1]
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discount_digits = self.__class__.discount.digits[1]
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res['gross_unit_price'] = gross_unit_price.quantize(
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Decimal(str(10.0 ** -unit_price_digits)))
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discount = 1 - (res['unit_price'] / res['gross_unit_price'])
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res['discount'] = discount.quantize(
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Decimal(str(10.0 ** -discount_digits)))
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else:
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res = super(SaleLine, self).update_prices()
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def update_prices_visible_discount(self):
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Product = Pool().get('product.product')
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unit_price = self.gross_unit_price
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discount = Decimal(0)
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gross_unit_price = Product.get_sale_price([self.product],
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self.quantity or 0)[self.product.id]
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if gross_unit_price:
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unit_price_digits = self.__class__.gross_unit_price.digits[1]
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discount_digits = self.__class__.discount.digits[1]
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gross_unit_price = gross_unit_price.quantize(
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Decimal(str(10.0 ** -unit_price_digits)))
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discount = 1 - (unit_price / gross_unit_price)
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discount = discount.quantize(
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Decimal(str(10.0 ** -discount_digits)))
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return {
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'gross_unit_price': gross_unit_price,
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'discount': discount,
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'unit_price': unit_price,
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}
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def on_change_product(self):
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res = super(SaleLine, self).on_change_product()
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if 'gross_unit_price' in res:
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self.gross_unit_price = res['gross_unit_price']
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res.update(self.update_prices_visible_discount())
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return res
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def on_change_quantity(self):
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res = super(SaleLine, self).on_change_quantity()
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if 'gross_unit_price' in res:
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self.gross_unit_price = res['gross_unit_price']
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res.update(self.update_prices_visible_discount())
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return res
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