/usr/lib/python2.7/dist-packages/trytond/modules/stock_supply/order_point.py is in tryton-modules-stock-supply 3.4.0-1.
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#this repository contains the full copyright notices and license terms.
from trytond.model import ModelView, ModelSQL, fields
from trytond.pyson import If, Equal, Eval, Not, In, Get
from trytond.transaction import Transaction
from trytond import backend
__all__ = ['OrderPoint']
class OrderPoint(ModelSQL, ModelView):
"""
Order Point
Provide a way to define a supply policy for each
product on each locations. Order points on warehouse are
considered by the supply scheduler to generate purchase requests.
"""
__name__ = 'stock.order_point'
product = fields.Many2One('product.product', 'Product', required=True,
select=True,
domain=[
('type', '=', 'goods'),
('consumable', '=', False),
('purchasable', 'in', If(Equal(Eval('type'), 'purchase'),
[True], [True, False])),
],
depends=['type'])
warehouse_location = fields.Many2One('stock.location',
'Warehouse Location', select=True,
domain=[('type', '=', 'warehouse')],
states={
'invisible': Not(Equal(Eval('type'), 'purchase')),
'required': Equal(Eval('type'), 'purchase'),
},
depends=['type'])
storage_location = fields.Many2One('stock.location', 'Storage Location',
select=True,
domain=[('type', '=', 'storage')],
states={
'invisible': Not(Equal(Eval('type'), 'internal')),
'required': Equal(Eval('type'), 'internal'),
},
depends=['type'])
location = fields.Function(fields.Many2One('stock.location', 'Location'),
'get_location', searcher='search_location')
provisioning_location = fields.Many2One(
'stock.location', 'Provisioning Location',
domain=[('type', '=', 'storage')],
states={
'invisible': Not(Equal(Eval('type'), 'internal')),
'required': Equal(Eval('type'), 'internal'),
},
depends=['type'])
type = fields.Selection(
[('internal', 'Internal'),
('purchase', 'Purchase')],
'Type', select=True, required=True)
min_quantity = fields.Float('Minimal Quantity', required=True,
digits=(16, Eval('unit_digits', 2)), depends=['unit_digits'])
max_quantity = fields.Float('Maximal Quantity', required=True,
digits=(16, Eval('unit_digits', 2)), depends=['unit_digits'])
company = fields.Many2One('company.company', 'Company', required=True,
domain=[
('id', If(In('company', Eval('context', {})), '=', '!='),
Eval('context', {}).get('company', -1)),
])
unit = fields.Function(fields.Many2One('product.uom', 'Unit'), 'get_unit')
unit_digits = fields.Function(fields.Integer('Unit Digits'),
'get_unit_digits')
@classmethod
def __setup__(cls):
super(OrderPoint, cls).__setup__()
cls._sql_constraints += [
('check_max_qty_greater_min_qty',
'CHECK(max_quantity >= min_quantity)',
'Maximal quantity must be bigger than Minimal quantity'),
]
cls._error_messages.update({
'unique_op': ('Only one order point is allowed '
'for each product-location pair.'),
'concurrent_internal_op': ('You can not define '
'two order points on the same product '
'with opposite locations.'),
})
@classmethod
def __register__(cls, module_name):
TableHandler = backend.get('TableHandler')
cursor = Transaction().cursor
# Migration from 2.2
table = TableHandler(cursor, cls, module_name)
table.drop_constraint('check_min_max_quantity')
super(OrderPoint, cls).__register__(module_name)
@staticmethod
def default_type():
return "purchase"
@fields.depends('product')
def on_change_product(self):
res = {
'unit': None,
'unit.rec_name': '',
'unit_digits': 2,
}
if self.product:
res['unit'] = self.product.default_uom.id
res['unit.rec_name'] = self.product.default_uom.rec_name
res['unit_digits'] = self.product.default_uom.digits
return res
def get_unit(self, name):
return self.product.default_uom.id
def get_unit_digits(self, name):
return self.product.default_uom.digits
@classmethod
def validate(cls, orderpoints):
super(OrderPoint, cls).validate(orderpoints)
cls.check_concurrent_internal(orderpoints)
cls.check_uniqueness(orderpoints)
@classmethod
def check_concurrent_internal(cls, orders):
"""
Ensure that there is no 'concurrent' internal order
points. I.E. no two order point with opposite location for the
same product and same company.
"""
internals = cls.search([
('id', 'in', [o.id for o in orders]),
('type', '=', 'internal'),
])
if not internals:
return
query = ['OR']
for op in internals:
arg = ['AND',
('product', '=', op.product.id),
('provisioning_location', '=', op.storage_location.id),
('storage_location', '=', op.provisioning_location.id),
('company', '=', op.company.id),
('type', '=', 'internal')]
query.append(arg)
if cls.search(query):
cls.raise_user_error('concurrent_internal_op')
@staticmethod
def _type2field(type=None):
t2f = {
'purchase': 'warehouse_location',
'internal': 'storage_location',
}
if type is None:
return t2f
else:
return t2f[type]
@classmethod
def check_uniqueness(cls, orders):
"""
Ensure uniqueness of order points. I.E that there is no several
order point for the same location, the same product and the
same company.
"""
query = ['OR']
for op in orders:
field = cls._type2field(op.type)
arg = ['AND',
('product', '=', op.product.id),
(field, '=', getattr(op, field).id),
('id', '!=', op.id),
('company', '=', op.company.id),
]
query.append(arg)
if cls.search(query):
cls.raise_user_error('unique_op')
def get_rec_name(self, name):
return "%s@%s" % (self.product.name, self.location.name)
@classmethod
def search_rec_name(cls, name, clause):
res = []
names = clause[2].split('@', 1)
res.append(('product.template.name', clause[1], names[0]))
if len(names) != 1 and names[1]:
res.append(('location', clause[1], names[1]))
return res
def get_location(self, name):
if self.type == 'purchase':
return self.warehouse_location.id
elif self.type == 'internal':
return self.storage_location.id
@classmethod
def search_location(cls, name, domain=None):
ids = []
for type, field in cls._type2field().iteritems():
args = [('type', '=', type)]
for _, operator, operand in domain:
args.append((field, operator, operand))
ids.extend([o.id for o in cls.search(args)])
return [('id', 'in', ids)]
@staticmethod
def default_company():
return Transaction().context.get('company')
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