/usr/lib/python3/dist-packages/trytond/modules/stock/product.py is in tryton-modules-stock 4.6.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# this repository contains the full copyright notices and license terms.
import datetime
from decimal import Decimal
from collections import defaultdict
from sql import Literal, Null
from sql.aggregate import Max
from sql.functions import CurrentTimestamp
from sql.conditionals import Coalesce
from trytond.model import ModelSQL, ModelView, fields
from trytond.wizard import Wizard, StateTransition
from trytond.pyson import Eval, Or
from trytond.transaction import Transaction
from trytond.pool import Pool, PoolMeta
from trytond.tools import grouped_slice
from trytond.modules.product import TemplateFunction
from .move import StockMixin
__all__ = ['Template', 'Product',
'ProductByLocationContext',
'ProductQuantitiesByWarehouse', 'ProductQuantitiesByWarehouseContext',
'RecomputeCostPrice']
class Template(metaclass=PoolMeta):
__name__ = "product.template"
quantity = fields.Function(fields.Float('Quantity'), 'sum_product')
forecast_quantity = fields.Function(fields.Float('Forecast Quantity'),
'sum_product')
cost_value = fields.Function(fields.Numeric('Cost Value'),
'sum_product')
def sum_product(self, name):
if name not in ('quantity', 'forecast_quantity', 'cost_value'):
raise Exception('Bad argument')
sum_ = 0. if name != 'cost_value' else Decimal(0)
for product in self.products:
sum_ += getattr(product, name)
return sum_
@classmethod
def __setup__(cls):
super(Template, cls).__setup__()
cls._error_messages.update({
'change_default_uom': ('You cannot change the default uom for '
'a product which is associated to stock moves.'),
'change_type': ('You cannot change the type for a product '
'which is associated to stock moves.'),
})
cls.cost_price.states['required'] = Or(
cls.cost_price.states.get('required', True),
Eval('type').in_(['goods', 'assets']))
cls.cost_price.depends.append('type')
cls._modify_no_move = [
('default_uom', 'change_default_uom'),
('type', 'change_type'),
]
@classmethod
def check_no_move(cls, templates, error):
Move = Pool().get('stock.move')
for sub_templates in grouped_slice(templates):
moves = Move.search([
('product.template', 'in', [t.id for t in sub_templates]),
],
limit=1, order=[])
if moves:
cls.raise_user_error(error)
@classmethod
def write(cls, *args):
if (Transaction().user != 0
and Transaction().context.get('_check_access')):
actions = iter(args)
for templates, values in zip(actions, actions):
for field, error in cls._modify_no_move:
if field in values:
cls.check_no_move(templates, error)
break
super(Template, cls).write(*args)
@classmethod
def recompute_cost_price(cls, templates):
pool = Pool()
Product = pool.get('product.product')
products = [p for t in templates for p in t.products]
Product.recompute_cost_price(products)
class Product(StockMixin, object, metaclass=PoolMeta):
__name__ = "product.product"
quantity = fields.Function(fields.Float('Quantity'), 'get_quantity',
searcher='search_quantity')
forecast_quantity = fields.Function(fields.Float('Forecast Quantity'),
'get_quantity', searcher='search_quantity')
cost_value = fields.Function(fields.Numeric('Cost Value'),
'get_cost_value')
@classmethod
def get_quantity(cls, products, name):
location_ids = Transaction().context.get('locations')
return cls._get_quantity(products, name, location_ids, products)
@classmethod
def search_quantity(cls, name, domain=None):
location_ids = Transaction().context.get('locations')
return cls._search_quantity(name, location_ids, domain)
@classmethod
def get_cost_value(cls, products, name):
cost_values = {}
context = {}
trans_context = Transaction().context
if trans_context.get('stock_date_end'):
# Use the last cost_price of the day
context['_datetime'] = datetime.datetime.combine(
trans_context['stock_date_end'], datetime.time.max)
with Transaction().set_context(context):
for product in cls.browse(products):
# The date could be before the product creation
if not isinstance(product.cost_price, Decimal):
cost_values[product.id] = None
else:
cost_values[product.id] = (Decimal(str(product.quantity))
* product.cost_price)
return cost_values
@classmethod
def products_by_location(cls, location_ids, product_ids=None,
with_childs=False, grouping=('product',)):
"""
Compute for each location and product the stock quantity in the default
uom of the product.
The context with keys:
stock_skip_warehouse: if set, quantities on a warehouse are no more
quantities of all child locations but quantities of the storage
zone.
Return a dictionary with location id and grouping as key
and quantity as value.
"""
pool = Pool()
Location = pool.get('stock.location')
Move = pool.get('stock.move')
# Skip warehouse location in favor of their storage location
# to compute quantities. Keep track of which ids to remove
# and to add after the query.
storage_to_remove = set()
wh_to_add = {}
if Transaction().context.get('stock_skip_warehouse'):
location_ids = set(location_ids)
for location in Location.browse(list(location_ids)):
if location.type == 'warehouse':
location_ids.remove(location.id)
if location.storage_location.id not in location_ids:
storage_to_remove.add(location.storage_location.id)
location_ids.add(location.storage_location.id)
wh_to_add[location.id] = location.storage_location.id
location_ids = list(location_ids)
grouping_filter = (product_ids,) + tuple(None for k in grouping[1:])
query = Move.compute_quantities_query(location_ids, with_childs,
grouping=grouping, grouping_filter=grouping_filter)
if query is None:
return {}
quantities = Move.compute_quantities(query, location_ids, with_childs,
grouping=grouping, grouping_filter=grouping_filter)
if wh_to_add:
for wh, storage in wh_to_add.items():
for key in quantities:
if key[0] == storage:
quantities[(wh,) + key[1:]] = quantities[key]
if storage in storage_to_remove:
del quantities[key]
return quantities
@classmethod
def recompute_cost_price(cls, products):
digits = cls.cost_price.digits
costs = defaultdict(list)
for product in products:
if product.type == 'service':
continue
cost = getattr(product,
'recompute_cost_price_%s' % product.cost_price_method)()
cost = cost.quantize(Decimal(str(10.0 ** -digits[1])))
costs[cost].append(product)
if not costs:
return
to_write = []
for cost, records in costs.items():
to_write.append(records)
to_write.append({'cost_price': cost})
# Enforce check access for account_stock*
with Transaction().set_context(_check_access=True):
cls.write(*to_write)
def recompute_cost_price_fixed(self):
return self.cost_price
def recompute_cost_price_average(self):
pool = Pool()
Move = pool.get('stock.move')
Currency = pool.get('currency.currency')
Uom = pool.get('product.uom')
context = Transaction().context
if not isinstance(self.__class__.cost_price, TemplateFunction):
product_clause = ('product', '=', self.id)
else:
product_clause = ('product.template', '=', self.template.id)
moves = Move.search([
product_clause,
('state', '=', 'done'),
('company', '=', context.get('company')),
['OR',
[
('to_location.type', '=', 'storage'),
('from_location.type', '!=', 'storage'),
],
[
('from_location.type', '=', 'storage'),
('to_location.type', '!=', 'storage'),
],
],
], order=[('effective_date', 'ASC'), ('id', 'ASC')])
cost_price = Decimal(0)
quantity = 0
for move in moves:
qty = Uom.compute_qty(move.uom, move.quantity, self.default_uom)
qty = Decimal(str(qty))
if move.from_location.type == 'storage':
qty *= -1
if (move.from_location.type in ['supplier', 'production']
or move.to_location.type == 'supplier'):
with Transaction().set_context(date=move.effective_date):
unit_price = Currency.compute(
move.currency, move.unit_price,
move.company.currency, round=False)
unit_price = Uom.compute_price(move.uom, unit_price,
self.default_uom)
if quantity + qty > 0 and quantity >= 0:
cost_price = (
(cost_price * quantity) + (unit_price * qty)
) / (quantity + qty)
elif qty > 0:
cost_price = unit_price
quantity += qty
return cost_price
class ProductByLocationContext(ModelView):
'Product by Location'
__name__ = 'product.by_location.context'
forecast_date = fields.Date(
'At Date', help=('Allow to compute expected '
'stock quantities for this date.\n'
'* An empty value is an infinite date in the future.\n'
'* A date in the past will provide historical values.'))
stock_date_end = fields.Function(fields.Date('At Date'),
'on_change_with_stock_date_end')
@staticmethod
def default_forecast_date():
Date = Pool().get('ir.date')
return Date.today()
@fields.depends('forecast_date')
def on_change_with_stock_date_end(self, name=None):
if self.forecast_date is None:
return datetime.date.max
return self.forecast_date
class ProductQuantitiesByWarehouse(ModelSQL, ModelView):
'Product Quantities By Warehouse'
__name__ = 'stock.product_quantities_warehouse'
date = fields.Date('Date')
quantity = fields.Function(fields.Float('Quantity'), 'get_quantity')
@classmethod
def __setup__(cls):
super(ProductQuantitiesByWarehouse, cls).__setup__()
cls._order.insert(0, ('date', 'ASC'))
@staticmethod
def table_query():
pool = Pool()
Move = pool.get('stock.move')
Location = pool.get('stock.location')
move = Move.__table__()
product_id = Transaction().context.get('product')
warehouse_id = Transaction().context.get('warehouse', -1)
warehouse_query = Location.search([
('parent', 'child_of', [warehouse_id]),
], query=True, order=[])
date_column = Coalesce(move.effective_date, move.planned_date
).as_('date')
return move.select(
Max(move.id).as_('id'),
Literal(0).as_('create_uid'),
CurrentTimestamp().as_('create_date'),
Literal(None).as_('write_uid'),
Literal(None).as_('write_date'),
date_column,
where=(move.product == product_id)
& (move.from_location.in_(warehouse_query)
| move.to_location.in_(warehouse_query))
& (Coalesce(move.effective_date, move.planned_date) != Null),
group_by=(date_column, move.product))
@classmethod
def get_quantity(cls, lines, name):
Product = Pool().get('product.product')
product_id = Transaction().context.get('product')
warehouse_id = Transaction().context.get('warehouse')
dates = sorted(l.date for l in lines)
quantities = {}
date_start = None
for date in dates:
context = {
'stock_date_start': date_start,
'stock_date_end': date,
'forecast': True,
}
with Transaction().set_context(**context):
quantities[date] = Product.products_by_location(
[warehouse_id], [product_id],
with_childs=True).get((warehouse_id, product_id), 0)
try:
date_start = date + datetime.timedelta(1)
except OverflowError:
pass
cumulate = 0
for date in dates:
cumulate += quantities[date]
quantities[date] = cumulate
return dict((l.id, quantities[l.date]) for l in lines)
class ProductQuantitiesByWarehouseContext(ModelView):
'Product Quantities By Warehouse'
__name__ = 'stock.product_quantities_warehouse.context'
warehouse = fields.Many2One('stock.location', 'Warehouse', required=True,
domain=[
('type', '=', 'warehouse'),
])
@staticmethod
def default_warehouse():
Location = Pool().get('stock.location')
warehouses = Location.search([
('type', '=', 'warehouse'),
])
if len(warehouses) == 1:
return warehouses[0].id
class RecomputeCostPrice(Wizard):
'Recompute Cost Price'
__name__ = 'product.recompute_cost_price'
start_state = 'recompute'
recompute = StateTransition()
def transition_recompute(self):
pool = Pool()
Product = pool.get('product.product')
Template = pool.get('product.template')
context = Transaction().context
if context['active_model'] == 'product.product':
products = Product.browse(context['active_ids'])
Product.recompute_cost_price(products)
elif context['active_model'] == 'product.template':
templates = Template.browse(context['active_ids'])
Template.recompute_cost_price(templates)
return 'end'
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