340 lines
13 KiB
Python
340 lines
13 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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import datetime
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from decimal import Decimal
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from sql import Literal, Null
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from sql.aggregate import Max
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from sql.functions import Now
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from sql.conditionals import Coalesce
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from trytond.model import ModelSQL, ModelView, fields
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from trytond.wizard import Wizard, StateView, StateAction, Button
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from trytond.pyson import PYSONEncoder, Eval, Or
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from trytond.transaction import Transaction
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from trytond.pool import Pool, PoolMeta
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from trytond.tools import grouped_slice
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from .move import StockMixin
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__all__ = ['Template', 'Product',
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'ProductByLocationStart', 'ProductByLocation',
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'ProductQuantitiesByWarehouse', 'ProductQuantitiesByWarehouseStart',
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'OpenProductQuantitiesByWarehouse']
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__metaclass__ = PoolMeta
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class Template:
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__name__ = "product.template"
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quantity = fields.Function(fields.Float('Quantity'), 'sum_product')
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forecast_quantity = fields.Function(fields.Float('Forecast Quantity'),
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'sum_product')
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cost_value = fields.Function(fields.Numeric('Cost Value'),
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'sum_product')
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def sum_product(self, name):
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if name not in ('quantity', 'forecast_quantity', 'cost_value'):
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raise Exception('Bad argument')
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sum_ = 0. if name != 'cost_value' else Decimal(0)
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for product in self.products:
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sum_ += getattr(product, name)
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return sum_
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@classmethod
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def __setup__(cls):
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super(Template, cls).__setup__()
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cls._error_messages.update({
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'change_default_uom': ('You cannot change the default uom for '
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'a product which is associated to stock moves.'),
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'change_type': ('You cannot change the type for a product '
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'which is associated to stock moves.'),
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})
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cls.cost_price.states['required'] = Or(
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cls.cost_price.states.get('required', True),
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Eval('type').in_(['goods', 'assets']))
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cls.cost_price.depends.append('type')
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cls._modify_no_move = [
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('default_uom', 'change_default_uom'),
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('type', 'change_type'),
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]
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@classmethod
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def check_no_move(cls, templates, error):
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Move = Pool().get('stock.move')
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for sub_templates in grouped_slice(templates):
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moves = Move.search([
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('product.template', 'in', [t.id for t in sub_templates]),
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],
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limit=1, order=[])
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if moves:
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cls.raise_user_error(error)
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@classmethod
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def write(cls, *args):
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if (Transaction().user != 0
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and Transaction().context.get('_check_access')):
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actions = iter(args)
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for templates, values in zip(actions, actions):
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for field, error in cls._modify_no_move:
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if field in values:
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cls.check_no_move(templates, error)
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break
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super(Template, cls).write(*args)
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class Product(object, StockMixin):
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__metaclass__ = PoolMeta
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__name__ = "product.product"
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quantity = fields.Function(fields.Float('Quantity'), 'get_quantity',
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searcher='search_quantity')
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forecast_quantity = fields.Function(fields.Float('Forecast Quantity'),
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'get_quantity', searcher='search_quantity')
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cost_value = fields.Function(fields.Numeric('Cost Value'),
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'get_cost_value')
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@classmethod
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def get_quantity(cls, products, name):
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location_ids = Transaction().context.get('locations')
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return cls._get_quantity(products, name, location_ids, products)
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@classmethod
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def search_quantity(cls, name, domain=None):
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location_ids = Transaction().context.get('locations')
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return cls._search_quantity(name, location_ids, domain)
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@classmethod
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def get_cost_value(cls, products, name):
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cost_values = {}
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context = {}
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trans_context = Transaction().context
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if trans_context.get('stock_date_end'):
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# Use the last cost_price of the day
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context['_datetime'] = datetime.datetime.combine(
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trans_context['stock_date_end'], datetime.time.max)
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with Transaction().set_context(context):
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for product in products:
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# The date could be before the product creation
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if not isinstance(product.cost_price, Decimal):
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cost_values[product.id] = None
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else:
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cost_values[product.id] = (Decimal(str(product.quantity))
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* product.cost_price)
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return cost_values
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@classmethod
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def products_by_location(cls, location_ids, product_ids=None,
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with_childs=False, grouping=('product',)):
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"""
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Compute for each location and product the stock quantity in the default
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uom of the product.
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The context with keys:
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stock_skip_warehouse: if set, quantities on a warehouse are no more
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quantities of all child locations but quantities of the storage
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zone.
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Return a dictionary with location id and grouping as key
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and quantity as value.
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"""
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pool = Pool()
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Location = pool.get('stock.location')
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Move = pool.get('stock.move')
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# Skip warehouse location in favor of their storage location
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# to compute quantities. Keep track of which ids to remove
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# and to add after the query.
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storage_to_remove = set()
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wh_to_add = {}
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if Transaction().context.get('stock_skip_warehouse'):
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location_ids = set(location_ids)
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for location in Location.browse(list(location_ids)):
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if location.type == 'warehouse':
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location_ids.remove(location.id)
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if location.storage_location.id not in location_ids:
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storage_to_remove.add(location.storage_location.id)
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location_ids.add(location.storage_location.id)
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wh_to_add[location.id] = location.storage_location.id
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location_ids = list(location_ids)
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grouping_filter = (product_ids,) + tuple(None for k in grouping[1:])
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query = Move.compute_quantities_query(location_ids, with_childs,
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grouping=grouping, grouping_filter=grouping_filter)
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if query is None:
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return {}
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quantities = Move.compute_quantities(query, location_ids, with_childs,
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grouping=grouping, grouping_filter=grouping_filter)
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if wh_to_add:
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for wh, storage in wh_to_add.iteritems():
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for key in quantities:
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if key[0] == storage:
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quantities[(wh,) + key[1:]] = quantities[key]
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if storage in storage_to_remove:
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del quantities[key]
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return quantities
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class ProductByLocationStart(ModelView):
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'Product by Location'
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__name__ = 'product.by_location.start'
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forecast_date = fields.Date(
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'At Date', help=('Allow to compute expected '
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'stock quantities for this date.\n'
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'* An empty value is an infinite date in the future.\n'
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'* A date in the past will provide historical values.'))
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@staticmethod
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def default_forecast_date():
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Date = Pool().get('ir.date')
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return Date.today()
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class ProductByLocation(Wizard):
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'Product by Location'
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__name__ = 'product.by_location'
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start = StateView('product.by_location.start',
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'stock.product_by_location_start_view_form', [
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Button('Cancel', 'end', 'tryton-cancel'),
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Button('Open', 'open', 'tryton-ok', default=True),
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])
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open = StateAction('stock.act_location_quantity_tree')
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def do_open(self, action):
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pool = Pool()
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Product = pool.get('product.product')
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Lang = pool.get('ir.lang')
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context = {}
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product_id = Transaction().context['active_id']
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context['product'] = product_id
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if self.start.forecast_date:
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context['stock_date_end'] = self.start.forecast_date
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else:
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context['stock_date_end'] = datetime.date.max
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action['pyson_context'] = PYSONEncoder().encode(context)
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product = Product(product_id)
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for code in [Transaction().language, 'en_US']:
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langs = Lang.search([
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('code', '=', code),
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])
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if langs:
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break
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lang, = langs
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date = Lang.strftime(context['stock_date_end'],
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lang.code, lang.date)
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action['name'] += ' - %s (%s) @ %s' % (product.rec_name,
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product.default_uom.rec_name, date)
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return action, {}
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class ProductQuantitiesByWarehouse(ModelSQL, ModelView):
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'Product Quantities By Warehouse'
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__name__ = 'stock.product_quantities_warehouse'
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date = fields.Date('Date')
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quantity = fields.Function(fields.Float('Quantity'), 'get_quantity')
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@classmethod
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def __setup__(cls):
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super(ProductQuantitiesByWarehouse, cls).__setup__()
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cls._order.insert(0, ('date', 'ASC'))
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@staticmethod
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def table_query():
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pool = Pool()
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Move = pool.get('stock.move')
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Location = pool.get('stock.location')
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move = Move.__table__()
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product_id = Transaction().context.get('product')
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warehouse_id = Transaction().context.get('warehouse', -1)
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warehouse_query = Location.search([
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('parent', 'child_of', [warehouse_id]),
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], query=True, order=[])
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date_column = Coalesce(move.effective_date, move.planned_date
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).as_('date')
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return move.select(
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Max(move.id).as_('id'),
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Literal(0).as_('create_uid'),
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Now().as_('create_date'),
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Literal(None).as_('write_uid'),
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Literal(None).as_('write_date'),
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date_column,
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where=(move.product == product_id)
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& (move.from_location.in_(warehouse_query)
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| move.to_location.in_(warehouse_query))
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& (Coalesce(move.effective_date, move.planned_date) != Null),
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group_by=(date_column, move.product))
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@classmethod
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def get_quantity(cls, lines, name):
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Product = Pool().get('product.product')
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product_id = Transaction().context.get('product')
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warehouse_id = Transaction().context.get('warehouse')
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dates = sorted(l.date for l in lines)
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quantities = {}
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date_start = None
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for date in dates:
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context = {
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'stock_date_start': date_start,
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'stock_date_end': date,
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'forecast': True,
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}
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with Transaction().set_context(**context):
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quantities[date] = Product.products_by_location(
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[warehouse_id], [product_id],
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with_childs=True).get((warehouse_id, product_id), 0)
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try:
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date_start = date + datetime.timedelta(1)
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except OverflowError:
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pass
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cumulate = 0
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for date in dates:
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cumulate += quantities[date]
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quantities[date] = cumulate
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return dict((l.id, quantities[l.date]) for l in lines)
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class ProductQuantitiesByWarehouseStart(ModelView):
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'Product Quantities By Warehouse'
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__name__ = 'stock.product_quantities_warehouse.start'
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warehouse = fields.Many2One('stock.location', 'Warehouse', required=True,
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domain=[
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('type', '=', 'warehouse'),
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])
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@staticmethod
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def default_warehouse():
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Location = Pool().get('stock.location')
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warehouses = Location.search([
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('type', '=', 'warehouse'),
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])
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if len(warehouses) == 1:
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return warehouses[0].id
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class OpenProductQuantitiesByWarehouse(Wizard):
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'Product Quantities By Warehouse'
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__name__ = 'stock.product_quantities_warehouse'
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start = StateView('stock.product_quantities_warehouse.start',
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'stock.product_quantities_warehouse_start_view_form', [
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Button('Cancel', 'end', 'tryton-cancel'),
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Button('Open', 'open_', 'tryton-ok', default=True),
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])
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open_ = StateAction('stock.act_product_quantities_warehouse')
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def do_open_(self, action):
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Date = Pool().get('ir.date')
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action['pyson_context'] = PYSONEncoder().encode({
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'product': Transaction().context['active_id'],
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'warehouse': self.start.warehouse.id,
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})
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action['pyson_search_value'] = PYSONEncoder().encode([
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('date', '>=', Date.today()),
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])
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return action, {}
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