115 lines
4.2 KiB
Python
115 lines
4.2 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 Workflow, ModelView, fields, Check
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from trytond.pool import Pool, PoolMeta
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from trytond.transaction import Transaction
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__all__ = ['Move']
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class Move:
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__metaclass__ = PoolMeta
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__name__ = 'stock.move'
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fifo_quantity = fields.Float('FIFO Quantity')
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@classmethod
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def __setup__(cls):
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super(Move, cls).__setup__()
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t = cls.__table__()
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cls._sql_constraints += [
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('check_fifo_quantity_out',
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Check(t, t.quantity >= t.fifo_quantity),
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'FIFO quantity can not be greater than quantity.'),
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]
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cls._error_messages.update({
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'del_move_fifo': ('You can not delete move "%s" that is used '
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'for FIFO cost price.'),
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})
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@staticmethod
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def default_fifo_quantity():
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return 0.0
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def _update_fifo_out_product_cost_price(self):
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'''
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Update the product cost price of the given product on the move. Update
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fifo_quantity on the concerned incomming moves. Return the
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cost price for outputing the given product and quantity.
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'''
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pool = Pool()
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Uom = pool.get('product.uom')
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Currency = pool.get('currency.currency')
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total_qty = Uom.compute_qty(self.uom, self.quantity,
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self.product.default_uom, round=False)
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fifo_moves = self.product.template.get_fifo_move(total_qty)
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cost_price = Decimal("0.0")
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consumed_qty = 0.0
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for move, move_qty in fifo_moves:
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consumed_qty += move_qty
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with Transaction().set_context(date=move.effective_date):
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move_unit_price = Currency.compute(
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move.currency, move.unit_price,
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self.company.currency, round=False)
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move_unit_price = Uom.compute_price(move.uom, move_unit_price,
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move.product.default_uom)
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cost_price += move_unit_price * Decimal(str(move_qty))
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move.quantity = move_qty
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move._update_product_cost_price('out')
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move_qty = Uom.compute_qty(self.product.default_uom, move_qty,
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move.uom, round=False)
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# Use write as move instance quantity was modified to call
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# _update_product_cost_price
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self.write([self.__class__(move.id)], {
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'fifo_quantity': (move.fifo_quantity or 0.0) + move_qty,
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})
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if Decimal(str(consumed_qty)) != Decimal("0"):
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cost_price = cost_price / Decimal(str(consumed_qty))
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if cost_price != Decimal("0"):
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digits = self.__class__.cost_price.digits
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return cost_price.quantize(
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Decimal(str(10.0 ** -digits[1])))
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else:
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return self.product.cost_price
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def _do(self):
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if (self.from_location.type in ('supplier', 'production')
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and self.to_location.type == 'storage'
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and self.product.cost_price_method == 'fifo'):
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self._update_product_cost_price('in')
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elif (self.to_location.type == 'supplier'
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and self.from_location.type == 'storage'
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and self.product.cost_price_method == 'fifo'):
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self._update_product_cost_price('out')
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elif (self.from_location.type == 'storage'
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and self.to_location.type != 'storage'
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and self.product.cost_price_method == 'fifo'):
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cost_price = self._update_fifo_out_product_cost_price()
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if self.cost_price is None:
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self.cost_price = cost_price
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super(Move, self)._do()
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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, moves):
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pass
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@classmethod
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def delete(cls, moves):
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fifo_moves = cls.search([
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('id', 'in', [m.id for m in moves]),
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('fifo_quantity', '!=', 0.0),
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])
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if fifo_moves:
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cls.raise_user_error('del_move_fifo', (fifo_moves[0].rec_name,))
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super(Move, cls).delete(moves)
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