95 lines
3.3 KiB
Python
Executable File
95 lines
3.3 KiB
Python
Executable File
#This file is part sale_margin module for Tryton.
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#The COPYRIGHT file at the top level of this repository contains
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#the full 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.pyson import Eval
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from trytond.pool import Pool, PoolMeta
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__all__ = ['Sale', 'SaleLine']
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__metaclass__ = PoolMeta
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class Sale:
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'Sale'
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__name__ = 'sale.sale'
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margin = fields.Function(fields.Numeric('Margin',
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digits=(16, Eval('currency_digits', 2),),
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depends=['currency_digits'],
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help='It gives profitability by calculating the difference '
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'between the Unit Price and Cost Price.'),
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'get_margin')
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margin_cache = fields.Numeric('Margin Cache',
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digits=(16, Eval('currency_digits', 2)),
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readonly=True,
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depends=['currency_digits'])
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def get_margin(self, name):
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'''
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Return the margin of each sales
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'''
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Currency = Pool().get('currency.currency')
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if (self.state in self._states_cached
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and self.margin_cache is not None):
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return self.margin_cache
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margin = sum((l.margin for l in self.lines if l.type == 'line'),
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Decimal(0))
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return Currency.round(self.currency, margin)
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@classmethod
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def store_cache(cls, sales):
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for sale in sales:
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cls.write([sale], {
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'untaxed_amount_cache': sale.untaxed_amount,
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'tax_amount_cache': sale.tax_amount,
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'total_amount_cache': sale.total_amount,
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'margin_cache': sale.margin,
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})
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class SaleLine:
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'Sale Line'
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__name__ = 'sale.line'
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cost_price = fields.Numeric('Cost Price', digits=(16, 4),
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states={
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'invisible': Eval('type') != 'line',
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'required': Eval('type') == 'line',
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}, depends=['type'])
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margin = fields.Function(fields.Numeric('Margin',
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digits=(16, Eval('_parent_sale', {}).get('currency_digits', 2)),
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states={
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'invisible': ~Eval('type').in_(['line', 'subtotal']),
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'readonly': ~Eval('_parent_sale'),
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}, on_change_with=['type', 'quantity', 'cost_price',
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'unit_price', 'unit', '_parent_sale.currency'],
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depends=['type']), 'get_margin')
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def on_change_product(self):
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if not self.product:
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return {}
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res = super(SaleLine, self).on_change_product()
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res['cost_price'] = self.product.cost_price
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return res
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def on_change_with_margin(self):
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cost = Decimal(str(self.quantity or '0.0')) * \
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(self.cost_price or Decimal('0.0'))
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amount = Decimal(str(self.quantity or '0.0')) * \
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(self.unit_price or Decimal('0.0'))
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res = Decimal(amount-cost)
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return res
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def get_margin(self, name):
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'''
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Return the margin of each sale lines
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'''
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Currency = Pool().get('currency.currency')
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if self.type == 'line':
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cost = Decimal(str(self.quantity)) * (self.cost_price or Decimal('0.0'))
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amount = Decimal(str(self.quantity)) * (self.unit_price)
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return Currency.round(self.sale.currency, amount - cost)
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else:
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return Decimal('0.0')
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