76 lines
2.4 KiB
Python
76 lines
2.4 KiB
Python
# -*- coding: utf-8 -*-
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# This file is part of the investment-module from m-ds for Tryton.
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# The COPYRIGHT file at the top level of this repository contains the
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# full copyright notices and license terms.
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from trytond.model import ModelView, ModelSQL, fields, Unique, Check
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from trytond.transaction import Transaction
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from trytond.pool import Pool
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from trytond.pyson import Eval, Bool
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class Rate(ModelSQL, ModelView):
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'Rate'
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__name__ = 'investment.rate'
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asset = fields.Many2One(string='Asset', required=True,
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select=True, ondelete='CASCADE',
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model_name='investment.asset')
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date = fields.Date(string='Date', required=True, select=True)
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rate = fields.Numeric(string='Rate', required=True,
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digits=(16, Eval('asset_digits', 4)),
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depends=['asset_digits'])
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asset_digits = fields.Function(fields.Integer(string='Digits',
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readonly=True), 'on_change_with_asset_digits')
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currency = fields.Function(fields.Many2One(string='Currency',
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readonly=True, model_name='currency.currency'),
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'on_change_with_currency')
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uom = fields.Function(fields.Many2One(string='Uom',
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readonly=True, model_name='product.uom'),
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'on_change_with_uom')
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@classmethod
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def __setup__(cls):
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super(Rate, cls).__setup__()
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t = cls.__table__()
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cls._sql_constraints = [
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('date_asset_uniq',
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Unique(t, t.date, t.asset),
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'investment.msg_unique_rate_date'),
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('check_rate',
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Check(t, t.rate >= 0),
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'currency.msg_rate_positive'),
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]
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cls._order.insert(0, ('date', 'DESC'))
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@classmethod
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def default_date(cls):
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""" today
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"""
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IrDate = Pool().get('ir.date')
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return IrDate.today()
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@fields.depends('asset', '_parent_asset.uom')
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def on_change_with_uom(self, name=None):
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""" get unit of asset
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"""
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if self.asset:
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return self.asset.uom.id
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@fields.depends('asset', '_parent_asset.currency')
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def on_change_with_currency(self, name=None):
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""" get currency
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"""
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if self.asset:
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return self.asset.currency.id
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@fields.depends('asset', '_parent_asset.currency_digits')
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def on_change_with_asset_digits(self, name=None):
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""" get digits for asset
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"""
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if self.asset:
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return self.asset.currency_digits
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return 4
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# Rate
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