/usr/lib/python2.7/dist-packages/trytond/model/fields/many2many.py is in tryton-server 3.8.3-1.
This file is owned by root:root, with mode 0o644.
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# this repository contains the full copyright notices and license terms.
from itertools import chain
from sql import Cast, Literal, Null
from sql.functions import Substring, Position
from sql.conditionals import Coalesce
from .field import Field, size_validate
from ...pool import Pool
from ...tools import grouped_slice
from ...transaction import Transaction
class Many2Many(Field):
'''
Define many2many field (``list``).
'''
_type = 'many2many'
def __init__(self, relation_name, origin, target, string='', order=None,
datetime_field=None, size=None, help='', required=False,
readonly=False, domain=None, states=None, on_change=None,
on_change_with=None, depends=None, context=None, loading='lazy'):
'''
:param relation_name: The name of the relation model
or the name of the target model for ModelView only.
:param origin: The name of the field to store origin ids.
:param target: The name of the field to store target ids.
:param order: a list of tuples that are constructed like this:
``('field name', 'DESC|ASC')``
allowing to specify the order of result
:param datetime_field: The name of the field that contains the datetime
value to read the target records.
'''
if datetime_field:
if depends:
depends.append(datetime_field)
else:
depends = [datetime_field]
super(Many2Many, self).__init__(string=string, help=help,
required=required, readonly=readonly, domain=domain, states=states,
on_change=on_change, on_change_with=on_change_with,
depends=depends, context=context, loading=loading)
self.relation_name = relation_name
self.origin = origin
self.target = target
self.order = order
self.datetime_field = datetime_field
self.__size = None
self.size = size
__init__.__doc__ += Field.__init__.__doc__
def _get_size(self):
return self.__size
def _set_size(self, value):
size_validate(value)
self.__size = value
size = property(_get_size, _set_size)
@property
def add_remove(self):
return self.domain
def get(self, ids, model, name, values=None):
'''
Return target records ordered.
'''
if values is None:
values = {}
res = {}
if not ids:
return res
for i in ids:
res[i] = []
if self.order is None:
order = [(self.target, 'ASC')]
else:
order = self.order
Relation = Pool().get(self.relation_name)
origin_field = Relation._fields[self.origin]
relations = []
for sub_ids in grouped_slice(ids):
if origin_field._type == 'reference':
references = ['%s,%s' % (model.__name__, x) for x in sub_ids]
clause = [(self.origin, 'in', references)]
else:
clause = [(self.origin, 'in', list(sub_ids))]
clause += [(self.target, '!=', None)]
relations.append(Relation.search(clause, order=order))
relations = list(chain(*relations))
for relation in relations:
origin_id = getattr(relation, self.origin).id
res[origin_id].append(getattr(relation, self.target).id)
return dict((key, tuple(value)) for key, value in res.iteritems())
def set(self, Model, name, ids, values, *args):
'''
Set the values.
values: A list of tuples:
(``create``, ``[{<field name>: value}, ...]``),
(``write``, [``<ids>``, ``{<field name>: value}``, ...]),
(``delete``, ``<ids>``),
(``remove``, ``<ids>``),
(``add``, ``<ids>``),
(``copy``, ``<ids>``, ``[{<field name>: value}, ...]``)
'''
pool = Pool()
Relation = pool.get(self.relation_name)
Target = self.get_target()
origin_field = Relation._fields[self.origin]
relation_to_create = []
relation_to_delete = []
target_to_write = []
target_to_delete = []
def search_clause(ids):
if origin_field._type == 'reference':
references = ['%s,%s' % (Model.__name__, x) for x in ids]
return (self.origin, 'in', references)
else:
return (self.origin, 'in', ids)
def field_value(record_id):
if origin_field._type == 'reference':
return '%s,%s' % (Model.__name__, record_id)
else:
return record_id
def create(ids, vlist):
for record_id in ids:
for new in Target.create(vlist):
relation_to_create.append({
self.origin: field_value(record_id),
self.target: new.id,
})
def write(_, *args):
actions = iter(args)
target_to_write.extend(sum(((Target.browse(ids), values)
for ids, values in zip(actions, actions)), ()))
def delete(_, target_ids):
target_to_delete.extend(Target.browse(target_ids))
def add(ids, target_ids):
target_ids = map(int, target_ids)
if not target_ids:
return
existing_ids = set()
for sub_ids in grouped_slice(target_ids):
relations = Relation.search([
search_clause(ids),
(self.target, 'in', list(sub_ids)),
])
for relation in relations:
existing_ids.add(getattr(relation, self.target).id)
for new_id in target_ids:
if new_id in existing_ids:
continue
for record_id in ids:
relation_to_create.append({
self.origin: field_value(record_id),
self.target: new_id,
})
def remove(ids, target_ids):
target_ids = map(int, target_ids)
if not target_ids:
return
for sub_ids in grouped_slice(target_ids):
relation_to_delete.extend(Relation.search([
search_clause(ids),
(self.target, 'in', list(sub_ids)),
]))
def copy(ids, copy_ids, default=None):
copy_ids = map(int, copy_ids)
if default is None:
default = {}
default = default.copy()
copies = Target.browse(copy_ids)
for new in Target.copy(copies, default=default):
for record_id in ids:
relation_to_create.append({
self.origin: field_value(record_id),
self.target: new.id,
})
actions = {
'create': create,
'write': write,
'delete': delete,
'add': add,
'remove': remove,
'copy': copy,
}
args = iter((ids, values) + args)
for ids, values in zip(args, args):
if not values:
continue
for value in values:
action = value[0]
args = value[1:]
actions[action](ids, *args)
if relation_to_create:
Relation.create(relation_to_create)
if relation_to_delete:
Relation.delete(relation_to_delete)
if target_to_write:
Target.write(*target_to_write)
if target_to_delete:
Target.delete(target_to_delete)
def get_target(self):
'Return the target model'
Relation = Pool().get(self.relation_name)
if not self.target:
return Relation
return Relation._fields[self.target].get_target()
def __set__(self, inst, value):
Target = self.get_target()
def instance(data):
if isinstance(data, Target):
return data
elif isinstance(data, dict):
return Target(**data)
else:
return Target(data)
value = tuple(instance(x) for x in (value or []))
super(Many2Many, self).__set__(inst, value)
def convert_domain_child(self, domain, tables):
Target = self.get_target()
table, _ = tables[None]
name, operator, ids = domain
ids = list(ids) # Ensure it is a list for concatenation
def get_child(ids):
if not ids:
return []
children = Target.search([
(name, 'in', ids),
(name, '!=', None),
], order=[])
child_ids = get_child([c.id for c in children])
return ids + child_ids
expression = table.id.in_(ids + get_child(ids))
if operator == 'not child_of':
return ~expression
return expression
def convert_domain(self, domain, tables, Model):
from ..modelsql import convert_from
pool = Pool()
Rule = pool.get('ir.rule')
Target = self.get_target()
Relation = pool.get(self.relation_name)
transaction = Transaction()
table, _ = tables[None]
name, operator, value = domain[:3]
if Relation._history and transaction.context.get('_datetime'):
relation = Relation.__table_history__()
history_where = (
Coalesce(relation.write_date, relation.create_date)
<= transaction.context['_datetime'])
else:
relation = Relation.__table__()
history_where = None
origin_field = Relation._fields[self.origin]
origin = getattr(Relation, self.origin).sql_column(relation)
origin_where = None
if origin_field._type == 'reference':
origin_where = origin.like(Model.__name__ + ',%')
origin = Cast(Substring(origin,
Position(',', origin) + Literal(1)),
Relation.id.sql_type().base)
target = getattr(Relation, self.target).sql_column(relation)
if '.' not in name:
if operator in ('child_of', 'not child_of'):
if Target != Model:
query = Target.search([(domain[3], 'child_of', value)],
order=[], query=True)
where = (target.in_(query) & (origin != Null))
if history_where:
where &= history_where
if origin_where:
where &= origin_where
query = relation.select(origin, where=where)
expression = table.id.in_(query)
if operator == 'not child_of':
return ~expression
return expression
if isinstance(value, basestring):
targets = Target.search([('rec_name', 'ilike', value)],
order=[])
ids = [t.id for t in targets]
elif not isinstance(value, (list, tuple)):
ids = [value]
else:
ids = value
if not ids:
expression = table.id.in_([None])
if operator == 'not child_of':
return ~expression
return expression
else:
return self.convert_domain_child(
(name, operator, ids), tables)
if value is None:
where = origin != value
if history_where:
where &= history_where
if origin_where:
where &= origin_where
query = relation.select(origin, where=where)
expression = ~table.id.in_(query)
if operator == '!=':
return ~expression
return expression
else:
if isinstance(value, basestring):
target_name = 'rec_name'
else:
target_name = 'id'
else:
_, target_name = name.split('.', 1)
relation_domain = [('%s.%s' % (self.target, target_name),)
+ tuple(domain[1:])]
if origin_field._type == 'reference':
relation_domain.append(
(self.origin, 'like', Model.__name__ + ',%'))
rule_domain = Rule.domain_get(Relation.__name__, mode='read')
if rule_domain:
relation_domain = [relation_domain, rule_domain]
relation_tables = {
None: (relation, None),
}
tables, expression = Relation.search_domain(
relation_domain, tables=relation_tables)
query_table = convert_from(None, relation_tables)
query = query_table.select(origin, where=expression)
return table.id.in_(query)
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