/usr/lib/python3/dist-packages/trytond/modules/stock_shipment_measurements/stock.py is in tryton-modules-stock-shipment-measurements 4.6.0-1.
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# this repository contains the full copyright notices and license terms.
from collections import defaultdict
from sql.aggregate import Sum
from sql.operators import Concat
from trytond.model import fields
from trytond.pool import PoolMeta, Pool
from trytond.tools import grouped_slice, reduce_ids
from trytond.transaction import Transaction
__all__ = ['Move',
'ShipmentIn', 'ShipmentInReturn',
'ShipmentOut', 'ShipmentOutReturn',
'Package']
class Move(metaclass=PoolMeta):
__name__ = 'stock.move'
internal_weight = fields.Float(
"Internal Weight", readonly=True,
help="The weight of the moved product in kg.")
internal_volume = fields.Float(
"Internal Volume", readonly=True,
help="The volume of the moved product in liter.")
@classmethod
def _get_internal_weight(cls, quantity, uom, product):
pool = Pool()
Uom = pool.get('product.uom')
ModelData = pool.get('ir.model.data')
kg = Uom(ModelData.get_id('product', 'uom_kilogram'))
# Use first the weight from product_measurements
# as it could include some handling weight
if product.weight is not None:
internal_quantity = cls._get_internal_quantity(
quantity, uom, product)
return Uom.compute_qty(
product.weight_uom, internal_quantity * product.weight, kg,
round=False)
elif uom.category == kg.category:
return Uom.compute_qty(uom, quantity, kg, round=False)
else:
return None
@classmethod
def _get_internal_volume(cls, quantity, uom, product):
pool = Pool()
Uom = pool.get('product.uom')
ModelData = pool.get('ir.model.data')
liter = Uom(ModelData.get_id('product', 'uom_liter'))
# Use first the volume from product_measurements
# as it could include some handling volume
if product.volume is not None:
internal_quantity = cls._get_internal_quantity(
quantity, uom, product)
return Uom.compute_qty(
product.volume_uom, internal_quantity * product.volume, liter,
round=False)
elif uom.category == liter.category:
return Uom.compute_qty(uom, quantity, liter, round=False)
else:
return None
@classmethod
def create(cls, vlist):
pool = Pool()
Product = pool.get('product.product')
Uom = pool.get('product.uom')
vlist = [v.copy() for v in vlist]
for values in vlist:
product = Product(values['product'])
uom = Uom(values['uom'])
quantity = values['quantity']
internal_weight = cls._get_internal_weight(quantity, uom, product)
if internal_weight is not None:
values['internal_weight'] = internal_weight
internal_volume = cls._get_internal_volume(quantity, uom, product)
if internal_volume is not None:
values['internal_volume'] = internal_volume
return super(Move, cls).create(vlist)
@classmethod
def write(cls, *args):
super(Move, cls).write(*args)
to_write = []
actions = iter(args)
for moves, values in zip(actions, actions):
for move in moves:
write = {}
internal_weight = cls._get_internal_weight(
move.quantity, move.uom, move.product)
if (internal_weight is not None
and internal_weight != move.internal_weight
and internal_weight != values.get('internal_weight')):
write['internal_weight'] = internal_weight
internal_volume = cls._get_internal_volume(
move.quantity, move.uom, move.product)
if (internal_volume is not None
and internal_volume != move.internal_volume
and internal_volume != values.get('internal_volume')):
write['internal_volume'] = internal_volume
if write:
to_write.extend(([move], write))
if to_write:
cls.write(*to_write)
class MeasurementsMixin(object):
weight = fields.Function(
fields.Float("Weight", digits=None,
help="The total weight of the record's moves in kg."),
'get_measurements', searcher='search_measurements')
volume = fields.Function(
fields.Float("Volume", digits=None,
help="The total volume of the record's moves in liter."),
'get_measurements', searcher='search_measurements')
@classmethod
def get_measurements(cls, shipments, names):
pool = Pool()
Move = pool.get('stock.move')
Location = pool.get('stock.location')
cursor = Transaction().connection.cursor()
table = cls.__table__()
move = Move.__table__()
location = Location.__table__()
measurements = defaultdict(lambda: defaultdict(lambda: None))
query = table.join(
move, type_='LEFT',
condition=cls._measurements_move_condition(table, move)
).join(
location,
condition=cls._measurements_location_condition(
table, move, location)
).select(
table.id,
Sum(move.internal_weight),
Sum(move.internal_volume),
group_by=[table.id])
for sub_shipments in grouped_slice(shipments):
query.where = reduce_ids(
table.id, [s.id for s in sub_shipments])
cursor.execute(*query)
for id_, weight, volume in cursor:
if 'weight' in names:
measurements['weight'][id_] = weight
if 'volume' in names:
measurements['volume'][id_] = volume
return measurements
@classmethod
def search_measurements(cls, name, clause):
pool = Pool()
Move = pool.get('stock.move')
Location = pool.get('stock.location')
table = cls.__table__()
move = Move.__table__()
location = Location.__table__()
_, operator, value = clause
Operator = fields.SQL_OPERATORS[operator]
if name == 'weight':
measurement = Sum(move.internal_weight)
else:
measurement = Sum(move.internal_volume)
query = table.join(
move, type_='LEFT',
condition=cls._measurements_move_condition(table, move)
).join(
location,
condition=cls._measurements_location_condition(
table, move, location)
).select(
table.id,
group_by=[table.id],
having=Operator(measurement, value))
return [('id', 'in', query)]
@classmethod
def _measurements_move_condition(cls, table, move):
return Concat(cls.__name__ + ',', table.id) == move.shipment
@classmethod
def _measurements_location_condition(cls, table, move, location):
raise NotImplementedError
class ShipmentIn(MeasurementsMixin, object, metaclass=PoolMeta):
__name__ = 'stock.shipment.in'
@classmethod
def _measurements_location_condition(cls, shipment, move, location):
return (
(move.from_location == location.id)
& (location.type == 'supplier'))
class ShipmentInReturn(MeasurementsMixin, object, metaclass=PoolMeta):
__name__ = 'stock.shipment.in.return'
@classmethod
def _measurements_location_condition(cls, shipment, move, location):
return move.from_location == location.id
class ShipmentOut(MeasurementsMixin, object, metaclass=PoolMeta):
__name__ = 'stock.shipment.out'
@classmethod
def _measurements_location_condition(cls, shipment, move, location):
return (
(move.to_location == location.id)
& (location.type == 'customer'))
class ShipmentOutReturn(MeasurementsMixin, object, metaclass=PoolMeta):
__name__ = 'stock.shipment.out.return'
@classmethod
def _measurements_location_condition(cls, shipment, move, location):
return (
(move.from_location == location.id)
& (location.type == 'customer'))
# TODO ShipmentInternal
class Package(MeasurementsMixin, object, metaclass=PoolMeta):
__name__ = 'stock.package'
additional_weight = fields.Float(
"Additional Weight",
help="The weight to add to the packages in kg.")
total_weight = fields.Function(
fields.Float("Total Weight", digits=None,
help="The total weight of the packages in kg."),
'get_total_measurements')
total_volume = fields.Function(
fields.Float("Total Volume", digits=None,
help="The total volume of the packages in liter."),
'get_total_measurements')
@classmethod
def _measurements_move_condition(cls, package, move):
return package.id == move.package
@classmethod
def _measurements_location_condition(cls, package, move, location):
return move.to_location == location.id
def get_total_measurements(self, name):
field = name[len('total_'):]
measurement = ((getattr(self, field) or 0)
+ sum(p.get_total_measurements(name) for p in self.children))
if name == 'total_weight' and self.additional_weight:
measurement += self.additional_weight
return measurement
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