120 lines
4.6 KiB
Python
120 lines
4.6 KiB
Python
# This file is part of Tryton. The COPYRIGHT file at the top level of
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# this repository contains the full copyright notices and license terms.
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from decimal import Decimal
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from trytond.model import ModelSQL, ModelView, fields
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from trytond.pyson import Eval, Bool, Id
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from trytond.pool import Pool, PoolMeta
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from trytond.transaction import Transaction
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__all__ = ['Carrier', 'WeightPriceList']
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class Carrier:
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__metaclass__ = PoolMeta
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__name__ = 'carrier'
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weight_uom = fields.Many2One('product.uom', 'Weight Uom',
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domain=[('category', '=', Id('product', 'uom_cat_weight'))],
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states={
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'invisible': Eval('carrier_cost_method') != 'weight',
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'required': Eval('carrier_cost_method') == 'weight',
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'readonly': Bool(Eval('weight_price_list', [])),
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},
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depends=['carrier_cost_method', 'weight_price_list'],
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help="The unit of weight criteria of the price list.")
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weight_uom_digits = fields.Function(fields.Integer('Weight Uom Digits'),
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'on_change_with_weight_uom_digits')
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weight_currency = fields.Many2One('currency.currency', 'Currency',
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states={
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'invisible': Eval('carrier_cost_method') != 'weight',
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'required': Eval('carrier_cost_method') == 'weight',
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'readonly': Bool(Eval('weight_price_list', [])),
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},
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depends=['carrier_cost_method', 'weight_price_list'],
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help="The currency of the price.")
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weight_currency_digits = fields.Function(fields.Integer(
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'Weight Currency Digits'),
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'on_change_with_weight_currency_digits')
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weight_price_list = fields.One2Many('carrier.weight_price_list', 'carrier',
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'Price List',
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states={
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'invisible': Eval('carrier_cost_method') != 'weight',
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'readonly': ~(Eval('weight_uom', 0) & Eval('weight_currency', 0)),
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},
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depends=['carrier_cost_method', 'weight_uom', 'weight_currency'],
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help="Add price to the carrier service.")
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@classmethod
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def __setup__(cls):
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super(Carrier, cls).__setup__()
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selection = ('weight', 'Weight')
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if selection not in cls.carrier_cost_method.selection:
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cls.carrier_cost_method.selection.append(selection)
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@staticmethod
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def default_weight_uom_digits():
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return 2
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@staticmethod
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def default_weight_currency_digits():
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Company = Pool().get('company.company')
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company = Transaction().context.get('company')
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if company:
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return Company(company).currency.digits
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return 2
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@fields.depends('weight_uom')
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def on_change_with_weight_uom_digits(self, name=None):
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if self.weight_uom:
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return self.weight_uom.digits
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return 2
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@fields.depends('weight_currency')
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def on_change_with_weight_currency_digits(self, name=None):
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if self.weight_currency:
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return self.weight_currency.digits
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return 2
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def compute_weight_price(self, weight):
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"Compute price based on weight"
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for line in reversed(self.weight_price_list):
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if line.weight < weight:
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return line.price
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return Decimal(0)
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def get_sale_price(self):
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price, currency_id = super(Carrier, self).get_sale_price()
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if self.carrier_cost_method == 'weight':
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weight_price = Decimal(0)
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for weight in Transaction().context.get('weights', []):
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weight_price += self.compute_weight_price(weight)
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return weight_price, self.weight_currency.id
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return price, currency_id
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def get_purchase_price(self):
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price, currency_id = super(Carrier, self).get_purchase_price()
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if self.carrier_cost_method == 'weight':
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weight_price = Decimal(0)
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for weight in Transaction().context.get('weights', []):
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weight_price += self.compute_weight_price(weight)
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return weight_price, self.weight_currency.id
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return price, currency_id
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class WeightPriceList(ModelSQL, ModelView):
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'Carrier Weight Price List'
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__name__ = 'carrier.weight_price_list'
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carrier = fields.Many2One('carrier', 'Carrier', required=True, select=True,
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help="The carrier that the price list belongs to.")
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weight = fields.Float('Weight',
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digits=(16, Eval('_parent_carrier.weight_uom_digits', 2)),
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help="The upper limit for the price.")
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price = fields.Numeric('Price',
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digits=(16, Eval('_parent_carrier.weight_currency_digits', 2)),
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help="The price of the carrier service.")
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@classmethod
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def __setup__(cls):
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super(WeightPriceList, cls).__setup__()
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cls._order.insert(0, ('weight', 'ASC'))
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