99 lines
3.9 KiB
Python
99 lines
3.9 KiB
Python
#This file is part of Tryton. The COPYRIGHT file at the top level of
|
|
#this repository contains the full copyright notices and license terms.
|
|
from trytond.model import ModelStorage
|
|
|
|
|
|
class ModelSingleton(ModelStorage):
|
|
"""
|
|
Define a singleton model in Tryton.
|
|
"""
|
|
|
|
def get_singleton_id(self, cursor, user, context=None):
|
|
singleton_ids = super(ModelSingleton, self).search(cursor, user, [],
|
|
limit=1, context=context)
|
|
if singleton_ids:
|
|
return singleton_ids[0]
|
|
return False
|
|
|
|
def create(self, cursor, user, values, context=None):
|
|
singleton_id = self.get_singleton_id(cursor, user, context=context)
|
|
if singleton_id:
|
|
self.write(cursor, user, singleton_id, values, context=context)
|
|
else:
|
|
singleton_id = super(ModelSingleton, self).create(cursor,
|
|
user, values, context=context)
|
|
return singleton_id
|
|
|
|
def read(self, cursor, user, ids, fields_names=None, context=None):
|
|
singleton_id = self.get_singleton_id(cursor, user, context=context)
|
|
if not singleton_id:
|
|
res = self.default_get(cursor, user, fields_names, context=context,
|
|
with_rec_name=False)
|
|
res['id'] = 1
|
|
if not isinstance(ids, (int, long)):
|
|
res = [res]
|
|
return res
|
|
if isinstance(ids, (int, long)):
|
|
ids2 = singleton_id
|
|
else:
|
|
ids2 = [singleton_id]
|
|
res = super(ModelSingleton, self).read(cursor, user, ids2,
|
|
fields_names=fields_names, context=context)
|
|
if isinstance(ids, (int, long)):
|
|
res['id'] = ids
|
|
else:
|
|
res[0]['id'] = ids[0]
|
|
return res
|
|
|
|
def write(self, cursor, user, ids, values, context=None):
|
|
singleton_id = self.get_singleton_id(cursor, user, context=context)
|
|
if not singleton_id:
|
|
return self.create(cursor, user, values, context=context)
|
|
if isinstance(ids, (int, long)):
|
|
ids = singleton_id
|
|
else:
|
|
ids = [singleton_id]
|
|
return super(ModelSingleton, self).write(cursor, user, ids, values,
|
|
context=context)
|
|
|
|
def delete(self, cursor, user, ids, context=None):
|
|
singleton_id = self.get_singleton_id(cursor, user, context=context)
|
|
if not singleton_id:
|
|
return True
|
|
if isinstance(ids, (int, long)):
|
|
ids = singleton_id
|
|
else:
|
|
ids = [singleton_id]
|
|
return super(ModelSingleton, self).delete(cursor, user, ids,
|
|
context=context)
|
|
|
|
def copy(self, cursor, user, ids, default=None, context=None):
|
|
if default:
|
|
self.write(cursor, user, ids, default, context=context)
|
|
return ids
|
|
|
|
def search(self, cursor, user, domain, offset=0, limit=None, order=None,
|
|
context=None, count=False):
|
|
res = super(ModelSingleton, self).search(cursor, user, domain,
|
|
offset=0, limit=None, order=None, context=None, count=False)
|
|
if not res:
|
|
return 1
|
|
return res
|
|
|
|
def default_get(self, cursor, user, fields_names, context=None,
|
|
with_rec_name=True):
|
|
res = super(ModelSingleton, self).default_get(cursor, user,
|
|
fields_names, context=context, with_rec_name=with_rec_name)
|
|
singleton_id = self.get_singleton_id(cursor, user, context=context)
|
|
if singleton_id:
|
|
if with_rec_name:
|
|
fields_names = fields_names[:]
|
|
for field in fields_names[:]:
|
|
if self._columns[field]._type in ('many2one',):
|
|
fields_names.append(field + '.rec_name')
|
|
res = self.read(cursor, user, singleton_id,
|
|
fields_names=fields_names, context=context)
|
|
for field in (x for x in res.keys() if x not in fields_names):
|
|
del res[field]
|
|
return res
|