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[Bug 742314] Re: [5.0.16] a class that defines __slots__ without defining __getstate__ cannot be pickled

 

Thanks a lot for reporting this bug and contributing to OpenERP. Unfortunately the OpenERP Web Client project is not going to be developed further after the 6.0 series. As of 6.1 a newer and better web frontend known as the OpenERP Web project[1] will be available.
Our R&D developers normally work in Launchpad to fix bugs for the next release, but there will be no next release for the current OpenERP Web Client. As our resources are limited, all further R&D efforts from the Web team are dedicated to finish the new 6.1 OpenERP Web project[1].
This bug will be closed as "Won't Fix" to show that R&D won't be able to work on it.

Bugs affecting customers in production of course continue to be handled via the OpenERP Enterprise (OPW) maintenance service, and this is the recommended way to have them corrected directly in the 6.0 LTS stable branch.
You can find more details about all of this in the FAQ of our Bug Management Policy documentation[2].

If you are interested, you should soon be able to beta-test the new
OpenERP Web 6.1 (this will be announced on OpenERP Community channels).

Thank you for your contributions and for your understanding!

[1] https://launchpad.net/openerp-web
[2] http://bit.ly/openerp-bugs-faq (FAQ #4)

** Changed in: openobject-client-web
       Status: Triaged => Won't Fix

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https://bugs.launchpad.net/bugs/742314

Title:
  [5.0.16] a class that defines __slots__ without defining __getstate__
  cannot be pickled

Status in OpenERP Web Client:
  Won't Fix

Bug description:
  Hi,

  I attempted to install OpenERP 5.0.16 (as per the source from the
  tarballs) on a fresh install of Ubuntu 10.04 LTS

  The installation proceeds as normal, for both server and web client,
  however, after the creation of the datrabase (and continueing to
  install the base data), this error occurs after filling in the company
  information.

  a class that defines __slots__ without defining __getstate__ cannot be
  pickled

  
  Full stack trace:

    File "/usr/local/lib/python2.6/dist-packages/CherryPy-3.2.0-py2.6.egg/cherrypy/_cprequest.py", line 645, in respond
      response.body = self.handler()
    File "/usr/local/lib/python2.6/dist-packages/CherryPy-3.2.0-py2.6.egg/cherrypy/lib/encoding.py", line 188, in __call__
      self.body = self.oldhandler(*args, **kwargs)
    File "/usr/local/lib/python2.6/dist-packages/CherryPy-3.2.0-py2.6.egg/cherrypy/_cpdispatch.py", line 29, in __call__
      return self.callable(*self.args, **self.kwargs)
    File "/usr/local/lib/python2.6/dist-packages/openerp_web-5.0.16-py2.6.egg/openerp/controllers/base.py", line 130, in wrapper
      return fn(*args, **kw)
    File "/usr/local/lib/python2.6/dist-packages/openerp_web-5.0.16-py2.6.egg/openerp/tools/expose.py", line 211, in func_wrapper
      res = func(*args, **kw)
    File "/usr/local/lib/python2.6/dist-packages/openerp_web-5.0.16-py2.6.egg/openerp/tools/utils.py", line 149, in func_wrapper
      return func(*args, **kw)
    File "/usr/local/lib/python2.6/dist-packages/openerp_web-5.0.16-py2.6.egg/openerp/tools/utils.py", line 166, in func_wrapper
      return func(*args, **kw)
    File "/usr/local/lib/python2.6/dist-packages/openerp_web-5.0.16-py2.6.egg/openerp/controllers/wizard.py", line 253, in action
      return self.create(params, tg_errors=tg_errors)
    File "/usr/local/lib/python2.6/dist-packages/openerp_web-5.0.16-py2.6.egg/openerp/controllers/base.py", line 130, in wrapper
      return fn(*args, **kw)
    File "/usr/local/lib/python2.6/dist-packages/openerp_web-5.0.16-py2.6.egg/openerp/tools/expose.py", line 211, in func_wrapper
      res = func(*args, **kw)
    File "/usr/local/lib/python2.6/dist-packages/openerp_web-5.0.16-py2.6.egg/openerp/controllers/wizard.py", line 169, in create
      return self.execute(params)
    File "/usr/local/lib/python2.6/dist-packages/openerp_web-5.0.16-py2.6.egg/openerp/controllers/wizard.py", line 85, in execute
      res = rpc.session.execute('wizard', 'execute', wiz_id, datas, state, ctx)
    File "/usr/local/lib/python2.6/dist-packages/openerp_web-5.0.16-py2.6.egg/openerp/rpc.py", line 351, in execute
      return self.gateway.execute(obj, method, *args)
    File "/usr/local/lib/python2.6/dist-packages/openerp_web-5.0.16-py2.6.egg/openerp/rpc.py", line 153, in execute
      return self.__execute(obj, method, args)
    File "/usr/local/lib/python2.6/dist-packages/openerp_web-5.0.16-py2.6.egg/openerp/rpc.py", line 142, in __execute
      raise common.error(_('Application Error!'), str(e))
    File "/usr/local/lib/python2.6/dist-packages/openerp_web-5.0.16-py2.6.egg/openerp/common.py", line 72, in error
      raise TinyError(message=msg, title=title or _("Error"))
  TinyError: a class that defines __slots__ without defining __getstate__ cannot be pickled

  
  This error prevents me from finishing the installation.

  
  The current Python packages installed 
  `pip freeze`

  Babel==0.9.6
  Beaker==1.5.4
  CherryPy==3.2.0
  FormEncode==1.2.3dev
  GnuPGInterface==0.3.2
  Landscape-Client==1.5.0
  Mako==0.2.5
  PAM==0.4.2
  PIL==1.1.7
  PyChart==1.39
  PyYAML==3.09
  Twisted-Core==10.0.0
  command-not-found==0.1
  distribute==0.6.10
  httplib2==0.6.0
  launchpadlib==1.6.0
  lazr.restfulclient==0.9.11
  lazr.uri==1.0.2
  lxml==2.2.4
  oauth==1.0a
  openerp-server==5.0.16
  openerp-web==5.0.16
  pexpect==2.3
  psycopg2==2.0.13
  pyOpenSSL==0.10
  pycurl==7.19.0
  pydot==1.0.2
  pyparsing==1.5.2
  pyserial==2.3
  python-apt==0.7.94.2ubuntu6.2
  python-dateutil==1.4.1
  pytz==2010b
  reportlab==2.4
  simplejson==2.0.9
  smart==1.2
  ufw==0.30pre1-0ubuntu2
  vobject==0.8.1c
  wadllib==1.1.4
  wsgiref==0.1.2
  zope.interface==3.5.3

  upon slightly modifying the location where the error was thrown to
  output locals(), I got this info (might not be much, but might help)

  
  {
      'obj': 'wizard',
      'self': <openerp.rpc.NETRPCGateway object at 0xad9f10c>,
      'args': (6, {
          'form': {
              'profile': 51,
              'city': 'Gerompont',
              'street2': False,
              'phone': '(+32).81.81.37.00',
              'street': 'Chaussee de Namur 40',
              'rml_header1': 'Free Business Solutions',
              'logo': <cherrypy._cpreqbody.Part object at 0xae6078c>,
              'rml_footer1': 'Web: http://tiny.be - Tel: (+32).81.81.37.00 - Bank: CPH 126-2013269-07',
              'rml_footer2': 'IBAN: BE74 1262 0132 6907 - SWIFT: GKCCBEBB - VAT: BE0477.472.701',
              'name': 'Tiny sprl',
              'zip': '1367',
              'currency': 1,
              'country_id': 20,
              'state_id': False,
              'email': False},
              'context': {}
          },
          u'update', {
              'lang': u'en_US',
              'client': 'web',
              'tz': False
          }),
      'auth': True,
      'e': TypeError('a class that defines __slots__ without defining __getstate__ cannot be pickled',),
      'method': 'execute'
  }

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References