278 lines
8.9 KiB
Python
278 lines
8.9 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, ROUND_DOWN, ROUND_HALF_EVEN
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from operator import itemgetter
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from trytond.model import ModelSQL, ModelView, Workflow, fields
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from trytond.pool import Pool, PoolMeta
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from trytond.pyson import Eval
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from trytond.transaction import Transaction
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from trytond import backend
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__all__ = ['Configuration', 'LandedCost', 'LandedCost_Shipment', 'InvoiceLine']
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class Configuration:
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__name__ = 'account.configuration'
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__metaclass__ = PoolMeta
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landed_cost_sequence = fields.Property(fields.Many2One('ir.sequence',
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'Landed Cost Sequence', domain=[
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('company', 'in',
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[Eval('context', {}).get('company', -1), None]),
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('code', '=', 'account.landed_cost'),
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], required=True))
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class LandedCost(Workflow, ModelSQL, ModelView):
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'Landed Cost'
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__name__ = 'account.landed_cost'
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_rec_name = 'number'
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number = fields.Char('Number', select=True, readonly=True)
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company = fields.Many2One('company.company', 'Company', required=True,
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states={
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'readonly': Eval('state') != 'draft',
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},
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depends=['state'])
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shipments = fields.Many2Many('account.landed_cost-stock.shipment.in',
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'landed_cost', 'shipment', 'Shipments',
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states={
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'readonly': Eval('state') != 'draft',
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},
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domain=[
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('company', '=', Eval('company')),
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('state', 'in', ['received', 'done']),
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],
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depends=['company', 'state'])
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invoice_lines = fields.One2Many('account.invoice.line', 'landed_cost',
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'Invoice Lines',
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states={
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'readonly': Eval('state') != 'draft',
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},
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add_remove=[
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('landed_cost', '=', None),
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],
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domain=[
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('invoice.state', 'in', ['posted', 'paid']),
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('invoice.type', '=', 'in'),
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('product.template.landed_cost', '=', True),
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('type', '=', 'line'),
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],
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depends=['state'])
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allocation_method = fields.Selection([
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('value', 'By Value'),
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], 'Allocation Method', required=True,
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states={
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'readonly': Eval('state') != 'draft',
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},
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depends=['state'])
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posted_date = fields.Date('Posted Date', readonly=True)
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state = fields.Selection([
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('draft', 'Draft'),
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('posted', 'Posted'),
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('cancel', 'Canceled'),
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], 'State', readonly=True)
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@classmethod
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def __setup__(cls):
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super(LandedCost, cls).__setup__()
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cls._order = [
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('number', 'DESC'),
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('id', 'DESC'),
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]
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cls._transitions |= set((
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('draft', 'posted'),
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('draft', 'cancel'),
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('cancel', 'draft'),
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))
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cls._buttons.update({
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'cancel': {
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'invisible': Eval('state') != 'draft',
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},
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'draft': {
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'invisible': Eval('state') != 'cancel',
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},
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'post': {
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'invisible': Eval('state') != 'draft',
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},
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})
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@classmethod
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def __register__(cls, module_name):
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TableHandler = backend.get('TableHandler')
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table_h = TableHandler(cls, module_name)
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# Migration from 3.8: rename code into number
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if table_h.column_exist('code'):
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table_h.column_rename('code', 'number')
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super(LandedCost, cls).__register__(module_name)
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@staticmethod
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def default_company():
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return Transaction().context.get('company')
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@staticmethod
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def default_allocation_method():
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return 'value'
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@staticmethod
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def default_state():
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return 'draft'
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@classmethod
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@ModelView.button
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@Workflow.transition('cancel')
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def cancel(cls, landed_costs):
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pass
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@classmethod
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@ModelView.button
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@Workflow.transition('draft')
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def draft(cls, landed_costs):
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pass
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@property
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def cost(self):
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pool = Pool()
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Currency = pool.get('currency.currency')
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currency = self.company.currency
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cost = Decimal(0)
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for line in self.invoice_lines:
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cost += Currency.compute(line.invoice.currency, line.amount,
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currency, round=False)
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return cost
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def allocate_cost_by_value(self):
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self._allocate_cost(self._get_value_factors())
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def _get_value_factors(self):
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"Return the factor for each move based on value"
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pool = Pool()
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Currency = pool.get('currency.currency')
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currency = self.company.currency
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moves = [m for s in self.shipments for m in s.incoming_moves
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if m.state != 'cancel']
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sum_value = 0
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unit_prices = {}
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for move in moves:
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unit_price = Currency.compute(move.currency, move.unit_price,
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currency, round=False)
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unit_prices[move.id] = unit_price
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sum_value += unit_price * Decimal(str(move.quantity))
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factors = {}
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length = Decimal(len(moves))
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for move in moves:
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quantity = Decimal(str(move.quantity))
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if not sum_value:
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factors[move.id] = 1 / length
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else:
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factors[move.id] = quantity * unit_prices[move.id] / sum_value
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return factors
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def _allocate_cost(self, factors):
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"Allocate cost on moves using factors"
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pool = Pool()
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Move = pool.get('stock.move')
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Currency = pool.get('currency.currency')
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cost = self.cost
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currency = self.company.currency
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moves = [m for s in self.shipments for m in s.incoming_moves
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if m.state != 'cancel']
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costs = []
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digit = Move.unit_price.digits[1]
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exp = Decimal(str(10.0 ** -digit))
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difference = cost
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for move in moves:
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quantity = Decimal(str(move.quantity))
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move_cost = cost * factors[move.id]
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unit_landed_cost = (move_cost / quantity).quantize(exp,
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rounding=ROUND_DOWN)
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costs.append({
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'unit_landed_cost': unit_landed_cost,
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'difference': move_cost - (unit_landed_cost * quantity),
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'move': move,
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})
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difference -= unit_landed_cost * quantity
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costs.sort(key=itemgetter('difference'), reverse=True)
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for cost in costs:
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move = cost['move']
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quantity = Decimal(str(move.quantity))
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if exp * quantity <= difference:
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cost['unit_landed_cost'] += exp
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difference -= exp * quantity
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if difference < exp:
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break
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for cost in costs:
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move = cost['move']
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unit_landed_cost = Currency.compute(
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currency, cost['unit_landed_cost'],
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move.currency, round=False)
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unit_landed_cost = unit_landed_cost.quantize(
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exp, rounding=ROUND_HALF_EVEN)
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if move.unit_landed_cost is None:
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move.unit_landed_cost = 0
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move.unit_price += unit_landed_cost
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move.unit_landed_cost += unit_landed_cost
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Move.save(moves)
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@classmethod
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@ModelView.button
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@Workflow.transition('posted')
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def post(cls, landed_costs):
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pool = Pool()
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Date = pool.get('ir.date')
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for landed_cost in landed_costs:
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getattr(landed_cost, 'allocate_cost_by_%s' %
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landed_cost.allocation_method)()
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cls.write(landed_costs, {
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'posted_date': Date.today(),
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})
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@classmethod
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def create(cls, vlist):
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pool = Pool()
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Sequence = pool.get('ir.sequence')
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Config = pool.get('account.configuration')
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vlist = [v.copy() for v in vlist]
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config = Config(1)
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for values in vlist:
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if values.get('number') is None:
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values['number'] = Sequence.get_id(
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config.landed_cost_sequence.id)
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return super(LandedCost, cls).create(vlist)
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class LandedCost_Shipment(ModelSQL):
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'Landed Cost - Shipment'
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__name__ = 'account.landed_cost-stock.shipment.in'
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landed_cost = fields.Many2One('account.landed_cost', 'Landed Cost',
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required=True, select=True)
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shipment = fields.Many2One('stock.shipment.in', 'Shipment',
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required=True)
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class InvoiceLine:
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__name__ = 'account.invoice.line'
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__metaclass__ = PoolMeta
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landed_cost = fields.Many2One('account.landed_cost', 'Landed Cost',
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readonly=True, select=True,
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states={
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'invisible': ~Eval('landed_cost'),
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})
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@classmethod
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def __setup__(cls):
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super(InvoiceLine, cls).__setup__()
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cls._check_modify_exclude.add('landed_cost')
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