481 lines
18 KiB
Python
481 lines
18 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 trytond.model import ModelView, ModelWorkflow, ModelSQL, fields
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from trytond.wizard import Wizard
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from trytond.pyson import Not, Equal, Eval, Or, Bool
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from trytond.backend import TableHandler
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import datetime
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import time
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from dateutil.relativedelta import relativedelta
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STATES = {
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'readonly': Not(Equal(Eval('state'), 'draft')),
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}
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class Forecast(ModelWorkflow, ModelSQL, ModelView):
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"Stock Forecast"
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_name = "stock.forecast"
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_description = __doc__
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_rec_name = 'location'
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location = fields.Many2One(
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'stock.location', 'Location', required=True,
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domain=[('type', '=', 'storage')], states={
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'readonly': Or(Not(Equal(Eval('state'), 'draft')),
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Bool(Eval('lines'))),
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})
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destination = fields.Many2One(
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'stock.location', 'Destination', required=True,
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domain=[('type', '=', 'customer')], states=STATES)
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from_date = fields.Date('From Date', required=True, states=STATES)
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to_date = fields.Date('To Date', required=True, states=STATES)
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lines = fields.One2Many(
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'stock.forecast.line', 'forecast', 'Lines', states=STATES)
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company = fields.Many2One(
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'company.company', 'Company', required=True, states={
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'readonly': Or(Not(Equal(Eval('state'), 'draft')),
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Bool(Eval('lines'))),
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})
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state = fields.Selection([
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('draft', 'Draft'),
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('done', 'Done'),
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('cancel', 'Cancel'),
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], 'State', readonly=True, select=1)
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def __init__(self):
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super(Forecast, self).__init__()
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self._rpc.update({
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'button_draft': True,
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})
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self._sql_constraints += [
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('check_from_to_date',
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'CHECK(to_date >= from_date)',
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'"To Date" must be greater than "From Date"!'),
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]
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self._constraints += [
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('check_date_overlap', 'date_overlap'),
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]
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self._error_messages.update({
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'date_overlap': 'You can not create forecasts for the same '
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'locations with overlapping dates'
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})
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self._order.insert(0, ('from_date', 'DESC'))
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self._order.insert(1, ('location', 'ASC'))
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def init(self, cursor, module_name):
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super(Forecast, self).init(cursor, module_name)
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# Add index on create_date
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table = TableHandler(cursor, self, module_name)
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table.index_action('create_date', action='add')
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def default_state(self, cursor, user, context=None):
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return 'draft'
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def default_destination(self, cursor, user, context=None):
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location_obj = self.pool.get('stock.location')
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location_ids = location_obj.search(cursor, user,
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self.destination.domain, context=context)
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if len(location_ids) == 1:
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return location_ids[0]
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return False
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def default_company(self, cursor, user, context=None):
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if context is None:
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context = {}
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if context.get('company'):
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return context['company']
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return False
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def check_date_overlap(self, cursor, user, ids):
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for forecast in self.browse(cursor, user, ids):
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if forecast.state != 'done':
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continue
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cursor.execute('SELECT id ' \
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'FROM stock_forecast ' \
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'WHERE ((from_date <= %s AND to_date >= %s) ' \
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'OR (from_date <= %s AND to_date >= %s) ' \
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'OR (from_date >= %s AND to_date <= %s)) ' \
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'AND location = %s ' \
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'AND destination = %s ' \
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'AND state = \'done\' ' \
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'AND id != %s',
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(forecast.from_date, forecast.from_date,
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forecast.to_date, forecast.to_date,
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forecast.from_date, forecast.to_date,
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forecast.location.id, forecast.destination.id,
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forecast.id))
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if cursor.rowcount:
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return False
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return True
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def button_draft(self, cursor, user, ids, context=None):
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self.workflow_trigger_create(cursor, user, ids, context=context)
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return True
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def set_state_draft(self, cursor, user, forecast_id, context=None):
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line_obj = self.pool.get("stock.forecast.line")
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forecast = self.browse(cursor, user, forecast_id, context=context)
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if forecast.state == "done":
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line_obj.cancel_moves(cursor, user, forecast.lines, context=context)
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self.write(cursor, user, forecast_id, {
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'state': 'draft',
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}, context=context)
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def set_state_cancel(self, cursor, user, forecast_id, context=None):
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self.write(cursor, user, forecast_id, {
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'state': 'cancel',
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}, context=context)
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def set_state_done(self, cursor, user, forecast_id, context=None):
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line_obj = self.pool.get('stock.forecast.line')
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forecast = self.browse(cursor, user, forecast_id, context=context)
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for line in forecast.lines:
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line_obj.create_moves(cursor, user, line, context=context)
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self.write(
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cursor, user, forecast_id, {'state': 'done',}, context=context)
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def copy(self, cursor, user, ids, default=None, context=None):
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line_obj = self.pool.get('stock.forecast.line')
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int_id = False
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if isinstance(ids, (int, long)):
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int_id = True
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ids = [ids]
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if default is None:
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default = {}
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default = default.copy()
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default['lines'] = False
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new_ids = []
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for forecast in self.browse(cursor, user, ids, context=context):
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new_id = super(Forecast, self).copy(cursor, user, forecast.id,
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default=default, context=context)
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line_obj.copy(cursor, user, [x.id for x in forecast.lines],
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default={
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'forecast': new_id,
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}, context=context)
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new_ids.append(new_id)
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if int_id:
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return new_ids[0]
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return new_ids
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Forecast()
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class ForecastLine(ModelSQL, ModelView):
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'Stock Forecast Line'
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_name = 'stock.forecast.line'
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_description = __doc__
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_rec_name = 'product'
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product = fields.Many2One('product.product', 'Product', required=True,
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domain=[('type', '=', 'stockable')], on_change=['product'])
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uom = fields.Many2One(
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'product.uom', 'UOM', required=True,
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domain=[
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('category', '=',
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(Eval('product'), 'product.default_uom.category')),
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])
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unit_digits = fields.Function('get_unit_digits', type='integer',
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string='Unit Digits')
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quantity = fields.Float('Quantity', digits=(16, Eval('unit_digits', 2)),
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required=True)
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minimal_quantity = fields.Float('Minimal Qty',
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digits=(16, Eval('unit_digits', 2)), required=True)
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moves = fields.Many2Many('stock.forecast.line-stock.move',
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'line', 'move','Moves', readonly=True)
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forecast = fields.Many2One(
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'stock.forecast', 'Forecast', required=True, ondelete='CASCADE',)
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def __init__(self):
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super(ForecastLine, self).__init__()
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self._sql_constraints += [
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('check_line_qty_pos',
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'CHECK(quantity >= 0.0)', 'Line quantity must be positive!'),
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('check_line_minimal_qty',
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'CHECK(quantity >= minimal_quantity)',
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'Line quantity must be greater than the minimal quantity!'),
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('forecast_product_uniq', 'UNIQUE(forecast, product)',
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'Product must be unique by forcast!'),
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]
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def default_unit_digits(self, cursor, user, context=None):
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return 2
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def default_minimal_quantity(self, cursor, user, context=None):
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return 1.0
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def on_change_product(self, cursor, user, ids, vals, context=None):
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product_obj = self.pool.get('product.product')
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uom_obj = self.pool.get('product.uom')
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res = {}
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res['unit_digits'] = 2
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if vals.get('product'):
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product = product_obj.browse(cursor, user, vals['product'],
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context=context)
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res['uom'] = product.default_uom.id
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res['uom.rec_name'] = product.default_uom.rec_name
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res['unit_digits'] = product.default_uom.digits
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return res
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def get_unit_digits(self, cursor, user, ids, name, arg, context=None):
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res = {}
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for line in self.browse(cursor, user, ids, context=context):
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res[line.id] = line.product.default_uom.digits
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return res
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def copy(self, cursor, user, ids, default=None, context=None):
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if default is None:
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default = {}
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default = default.copy()
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default['moves'] = False
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return super(ForecastLine, self).copy(cursor, user, ids,
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default=default, context=context)
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def create_moves(self, cursor, user, line, context=None):
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move_obj = self.pool.get('stock.move')
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uom_obj = self.pool.get('product.uom')
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delta = line.forecast.to_date - line.forecast.from_date
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delta = delta.days + 1
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nb_packet = int(line.quantity/line.minimal_quantity)
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distribution = self.distribute(
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cursor, user, delta, nb_packet, context=context)
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unit_price = False
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if line.forecast.destination.type == 'customer':
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unit_price = line.product.list_price
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unit_price = uom_obj.compute_price(
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cursor, user, line.product.default_uom, unit_price, line.uom,
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context=context)
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moves = []
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for day, qty in distribution.iteritems():
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if qty == 0.0:
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continue
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mid = move_obj.create(
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cursor, user,
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{'from_location': line.forecast.location.id,
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'to_location': line.forecast.destination.id,
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'product': line.product.id,
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'uom': line.uom.id,
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'quantity': qty * line.minimal_quantity,
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'planned_date': line.forecast.from_date + datetime.timedelta(day),
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'company': line.forecast.company.id,
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'currency':line.forecast.company.currency,
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'unit_price': unit_price,
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},
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context=context)
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moves.append(('add',mid))
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self.write(cursor, user, line.id, {'moves': moves}, context=context)
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def cancel_moves(self, cursor, user, lines, context=None):
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move_obj = self.pool.get('stock.move')
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move_obj.write(
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cursor, user, [m.id for l in lines for m in l.moves], {'state': 'cancel'},
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context=context)
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move_obj.delete(
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cursor, user, [m.id for l in lines for m in l.moves], context=context)
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def distribute(self, cursor, user, delta, qty, context=None):
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range_delta = range(delta)
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a = {}.fromkeys(range_delta, 0)
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while qty > 0:
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if qty > delta:
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for i in range_delta:
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a[i] += qty//delta
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qty = qty%delta
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elif delta//qty > 1:
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i = 0
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while i < qty:
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a[i*delta//qty + (delta//qty/2)] += 1
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i += 1
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qty = 0
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else:
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for i in range_delta:
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a[i] += 1
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qty = delta-qty
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i = 0
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while i < qty:
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a[delta - ((i*delta//qty) + (delta//qty/2)) - 1] -= 1
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i += 1
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qty = 0
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return a
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ForecastLine()
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class ForecastLineMove(ModelSQL):
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'ForecastLine - Move'
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_name = 'stock.forecast.line-stock.move'
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_table = 'forecast_line_stock_move_rel'
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_description = __doc__
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line = fields.Many2One('stock.forecast.line', 'Forecast Line',
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ondelete='CASCADE', select=1, required=True)
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move = fields.Many2One('stock.move', 'Move', ondelete='CASCADE',
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select=1, required=True)
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ForecastLineMove()
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class ForecastCompleteAsk(ModelView):
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'Forecast Complete Ask'
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_name = 'stock.forecast.complete.ask'
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_description = __doc__
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from_date = fields.Date('From Date', required=True)
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to_date = fields.Date('To Date', required=True)
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ForecastCompleteAsk()
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class ForecastCompleteChoose(ModelView):
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'Forecast Complete Choose'
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_name = 'stock.forecast.complete.choose'
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_description = __doc__
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products = fields.Many2Many('product.product', None, None, 'Products')
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ForecastCompleteChoose()
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class ForecastComplete(Wizard):
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'Complete Forecast'
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_name = 'stock.forecast.complete'
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states = {
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'init': {
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'actions': ['_set_default_dates'],
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'result': {
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'type': 'form',
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'object': 'stock.forecast.complete.ask',
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'state': [
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('end', 'cancel', 'tryton-cancel'),
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('choose', 'Choose products', 'tryton-go-next'),
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('complete', 'Complete', 'tryton-ok', True),
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],
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},
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},
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'choose': {
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'actions': ['_set_default_products'],
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'result': {
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'type': 'form',
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'object': 'stock.forecast.complete.choose',
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'state': [
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('end', 'cancel', 'tryton-cancel'),
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('init', 'Choose Dates', 'tryton-go-previous'),
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('complete', 'Complete', 'tryton-ok', True),
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],
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},
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},
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'complete': {
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'result': {
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'type': 'action',
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'action': '_complete',
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'state': 'end',
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},
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},
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}
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def __init__(self):
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super(ForecastComplete, self).__init__()
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self._error_messages.update({
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'from_to_date': '"From Date" should be smaller than "To Date"!',
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})
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def _set_default_dates(self, cursor, user, data, context=None):
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"""
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Forecast dates shifted by one year.
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"""
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forecast_obj = self.pool.get('stock.forecast')
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forecast = forecast_obj.browse(cursor, user, data['id'], context=context)
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res = {}
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for field in ("to_date", "from_date"):
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res[field] = forecast[field] - relativedelta(years=1)
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return res
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def _get_product_quantity(self, cursor, user, data, context=None):
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forecast_obj = self.pool.get('stock.forecast')
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product_obj = self.pool.get('product.product')
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forecast = forecast_obj.browse(cursor, user, data['id'], context=context)
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if data['form']['from_date'] > data['form']['to_date']:
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self.raise_user_error(cursor, 'from_to_date', context=context)
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local_context = context and context.copy() or {}
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local_context['stock_destinations'] = [forecast.destination.id]
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local_context['stock_date_start'] = data['form']['from_date']
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local_context['stock_date_end'] = data['form']['to_date']
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return product_obj.products_by_location(
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cursor, user, [forecast.location.id], with_childs=True,
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skip_zero=False, context=local_context)
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def _set_default_products(self, cursor, user, data, context=None):
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"""
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Collect products for which there is an outgoing stream between
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the given location and the destination.
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"""
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pbl = self._get_product_quantity(cursor, user, data, context=context)
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products = []
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for (_, product), qty in pbl.iteritems():
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if qty < 0:
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products.append(product)
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data['form'].update({'products': products})
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return data['form']
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def _complete(self, cursor, user, data, context=None):
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forecast_obj = self.pool.get('stock.forecast')
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forecast_line_obj = self.pool.get('stock.forecast.line')
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product_obj = self.pool.get('product.product')
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prod2line = {}
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forecast_line_ids = forecast_line_obj.search(
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cursor, user, [('forecast', '=', data['id'])], context=context)
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for forecast_line in forecast_line_obj.browse(
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cursor, user, forecast_line_ids, context=context):
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prod2line[forecast_line.product.id] = forecast_line.id
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pbl = self._get_product_quantity(cursor, user, data, context=context)
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product_ids = [x[1] for x in pbl]
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prod2uom = {}
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for product in product_obj.browse(cursor, user, product_ids,
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context=context):
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prod2uom[product.id] = product.default_uom.id
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if data['form'].get('products'):
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products = data['form']['products'][0][1]
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else:
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products = None
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for (_, product), qty in pbl.iteritems():
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if products and product not in products:
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continue
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if -qty <= 0:
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continue
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if product in prod2line:
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forecast_line_obj.write(
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cursor, user, prod2line[product],
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{'product': product,
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'quantity': -qty,
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'uom': prod2uom[product],
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'forecast': data['id'],
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'minimal_quantity': min(1, -qty),
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},
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context=context)
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else:
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forecast_line_obj.create(
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cursor, user,
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{'product': product,
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'quantity': -qty,
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'uom': prod2uom[product],
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'forecast': data['id'],
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'minimal_quantity': min(1, -qty),
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},
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context=context)
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return {}
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ForecastComplete()
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