CODEWITHSUNDEEP
pythonodoo
NeoVe
NeoVe

Reputation: 3897

ValueError: Expected singleton: res.partner - Odoo v10 community

I'm migrating some modules from v7 to v10

Right now I have these methods which inherit res.partner

@api.depends('company_id')
def _get_country_code(self):
    """
    Return the country code of the user company. If not exists, return XX.
    """
    context = dict(self._context or {})
    for partner in self:
        user_company = self.env['res.users'].browse(self.company_id)
        #NOTE: replace code name with your real field name where you want to see value 
        partner.code = user_company.partner_id and user_company.partner_id.country_id \
            and user_company.partner_id.country_id.code or 'XX'

@api.multi
def default_get(self, field_list):
    """ Load the country code of the user company to form to be created.
    """
    # NOTE: use field_list argument instead of fields for fix the pylint
    # error W0621 Redefining name 'fields' from outer scope
    context = {}
    res = super(ResPartner, self).default_get(field_list)
    res.update({'uid_country': self._get_country_code })
    return res

@api.multi
def _get_uid_country(self):
    """ Return a dictionary of key ids as invoices, and value the country code
    of the user company.
    """
    context = dict(self._context or {})
    res = {}.fromkeys(self._get_country_code())
    return res

I have this error every time I try to create or read a partner:

Traceback (most recent call last):
File "/home/kristian/.virtualenvs/odoov10/lib/python2.7/site-packages/odoo-10.0rc1c_20161005-py2.7.egg/odoo/http.py", line 638, in _handle_exception
return super(JsonRequest, self)._handle_exception(exception)
File "/home/kristian/.virtualenvs/odoov10/lib/python2.7/site-packages/odoo-10.0rc1c_20161005-py2.7.egg/odoo/http.py", line 675, in dispatch
result = self._call_function(**self.params)
File "/home/kristian/.virtualenvs/odoov10/lib/python2.7/site-packages/odoo-10.0rc1c_20161005-py2.7.egg/odoo/http.py", line 331, in _call_function
return checked_call(self.db, *args, **kwargs)
File "/home/kristian/.virtualenvs/odoov10/lib/python2.7/site-packages/odoo-10.0rc1c_20161005-py2.7.egg/odoo/service/model.py", line 119, in wrapper
return f(dbname, *args, **kwargs)
File "/home/kristian/.virtualenvs/odoov10/lib/python2.7/site-packages/odoo-10.0rc1c_20161005-py2.7.egg/odoo/http.py", line 324, in checked_call
result = self.endpoint(*a, **kw)
File "/home/kristian/.virtualenvs/odoov10/lib/python2.7/site-packages/odoo-10.0rc1c_20161005-py2.7.egg/odoo/http.py", line 933, in __call__
return self.method(*args, **kw)
File "/home/kristian/.virtualenvs/odoov10/lib/python2.7/site-packages/odoo-10.0rc1c_20161005-py2.7.egg/odoo/http.py", line 504, in response_wrap
response = f(*args, **kw)
File "/home/kristian/odoov10/odoo-10.0rc1c-20161005/odoo/addons/web/controllers/main.py", line 862, in call_kw
return self._call_kw(model, method, args, kwargs)
File "/home/kristian/odoov10/odoo-10.0rc1c-20161005/odoo/addons/web/controllers/main.py", line 854, in _call_kw
return call_kw(request.env[model], method, args, kwargs)
File "/home/kristian/.virtualenvs/odoov10/lib/python2.7/site-packages/odoo-10.0rc1c_20161005-py2.7.egg/odoo/api.py", line 681, in call_kw
return call_kw_multi(method, model, args, kwargs)
File "/home/kristian/.virtualenvs/odoov10/lib/python2.7/site-packages/odoo-10.0rc1c_20161005-py2.7.egg/odoo/api.py", line 672, in call_kw_multi
result = method(recs, *args, **kwargs)
File "/home/kristian/.virtualenvs/odoov10/lib/python2.7/site-packages/odoo-10.0rc1c_20161005-py2.7.egg/odoo/models.py", line 2995, in read
values[name] = field.convert_to_read(record[name], record, use_name_get)
File "/home/kristian/.virtualenvs/odoov10/lib/python2.7/site-packages/odoo-10.0rc1c_20161005-py2.7.egg/odoo/models.py", line 5171, in __getitem__
return self._fields[key].__get__(self, type(self))
File "/home/kristian/.virtualenvs/odoov10/lib/python2.7/site-packages/odoo-10.0rc1c_20161005-py2.7.egg/odoo/fields.py", line 860, in __get__
self.determine_value(record)
File "/home/kristian/.virtualenvs/odoov10/lib/python2.7/site-packages/odoo-10.0rc1c_20161005-py2.7.egg/odoo/fields.py", line 969, in determine_value
self.compute_value(recs)
File "/home/kristian/.virtualenvs/odoov10/lib/python2.7/site-packages/odoo-10.0rc1c_20161005-py2.7.egg/odoo/fields.py", line 924, in compute_value
self._compute_value(records)
File "/home/kristian/.virtualenvs/odoov10/lib/python2.7/site-packages/odoo-10.0rc1c_20161005-py2.7.egg/odoo/fields.py", line 918, in _compute_value
self.compute(records)
File "/home/kristian/odoov10/gilda/l10n_ve_fiscal_requirements/model/partner.py", line 73, in _get_uid_country
res = {}.fromkeys(self._get_country_code())
File "/home/kristian/odoov10/gilda/l10n_ve_fiscal_requirements/model/partner.py", line 51, in _get_country_code
user_company = self.env['res.users'].browse(self.company_id)
File "/home/kristian/.virtualenvs/odoov10/lib/python2.7/site-packages/odoo-10.0rc1c_20161005-py2.7.egg/odoo/fields.py", line 854, in __get__
record.ensure_one()
File "/home/kristian/.virtualenvs/odoov10/lib/python2.7/site-packages/odoo-10.0rc1c_20161005-py2.7.egg/odoo/models.py", line 4783, in ensure_one
raise ValueError("Expected singleton: %s" % self)
ValueError: Expected singleton: res.partner(1, 33, 8, 18, 22, 23)

I'm struggling with this, also, do You think it will be easier to migrate from v8 instead of v7, to v10?

Any ideas?

Upvotes: 1

Views: 1827

Answers (2)

Vishnu VaNnErI
Vishnu VaNnErI

Reputation: 931

Please try this

    @api.multi
    def _get_country_code(self):
       code =False
       for partner in self:

          user_company = self.user_id
   #it will return the current login-ed user id 

          code = user_company.partner_id and user_company.partner_id.country_id and user_company.partner_id.country_id.code or 'XX'
       return code

Upvotes: 2

Bhavesh Odedra
Bhavesh Odedra

Reputation: 11143

Expected Singleton:

Class methods required single invoking object (Single Browsable Record) to invoke the method and suppose it will call by multiple invoking objects (Browsable Recordsets) then method is not able to identify for which object it should process, therefore it will raise an error Expected Singleton.

New API decorator is used to define method calling pattern whether methods allows only single object or multiple objects to invoke this method.

@api.one

This decorator loops automatically on Records of RecordSet for you. Self is redefined as current record

Note: Caution: the returned value is put in a list. This is not always supported by the web client, e.g. on button action methods. In that case, you should use @api.multi to decorate your method, and probably call self.ensure_one() in the method definition.

@api.multi

Self will be the current RecordSet without iteration. It is the default behavior (multiple browsable objects). Methods which returns non premitive type data(list, dictionary, function) must be decorated with @api.multi

@api.model

This decorator will convert old API calls to decorated function to new API signature. It allows to be polite when migrating code. Self does not contain any record/recordset in methods which are decorated by this decorator.

So simply call like this

self.env['model_name'].method_name(arguments)

Try with following code:

@api.depends('company_id')
def _get_country_code(self):
    """
    Return the country code of the user company. If not exists, return XX.
    """
    context = dict(self._context or {})
    for partner in self:
        user_company = self.env['res.company'].browse(self.company_id)
        #NOTE: replace code name with your real field name where you want to see value 
        partner.code = user_company.partner_id and user_company.partner_id.country_id \
            and user_company.partner_id.country_id.code or 'XX'

Change default_get() method api from @api.multi to @api.model

Reference link

Upvotes: 2

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