TypeError: unhashable type: 'list'

Client Traceback (most recent call last): File "/usr/lib/pymodules/python2.7/openerp/addons/web/http.py", line 204, in dispatch response["result"] = method(self, *self.params) File "/usr/lib/pymodules/python2.7/openerp/addons/web/controllers/main.py", line 1129, in call_kw return self._call_kw(req, model, method, args, kwargs) File "/usr/lib/pymodules/python2.7/openerp/addons/web/controllers/main.py", line 1121, in _call_kw return getattr(req.session.model(model), method)(args, *kwargs) File "/usr/lib/pymodules/python2.7/openerp/addons/web/session.py", line 43, in proxy result = self.proxy.execute_kw(self.session._db, self.session._uid, self.session._password, self.model, method, args, kw) File "/usr/lib/pymodules/python2.7/openerp/addons/web/session.py", line 31, in proxy_method result = self.session.send(self.service_name, method, args) File "/usr/lib/pymodules/python2.7/openerp/addons/web/session.py", line 104, in send raise xmlrpclib.Fault(openerp.tools.ustr(e), formatted_info) Server Traceback (most recent call last): File "/usr/lib/pymodules/python2.7/openerp/addons/web/session.py", line 90, in send return openerp.netsvc.dispatch_rpc(service_name, method, args) File "/usr/lib/pymodules/python2.7/openerp/netsvc.py", line 293, in dispatch_rpc result = ExportService.getService(service_name).dispatch(method, params) File "/usr/lib/pymodules/python2.7/openerp/service/web_services.py", line 626, in dispatch res = fn(db, uid, *params) File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 188, in execute_kw return self.execute(db, uid, obj, method, *args, *kw or {}) File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 131, in wrapper return f(self, dbname, args, *kwargs) File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 197, in execute res = self.execute_cr(cr, uid, obj, method, args, *kw) File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 185, in execute_cr return getattr(object, method)(cr, uid, args, *kw) File "/usr/lib/pymodules/python2.7/openerp/addons/mail/mail_thread.py", line 242, in create thread_id = super(mail_thread, self).create(cr, uid, values, context=context) File "/usr/lib/pymodules/python2.7/openerp/osv/orm.py", line 4429, in create self._check_selection_field_value(cr, user, field, vals[field], context=context) File "/usr/lib/pymodules/python2.7/openerp/osv/orm.py", line 2815, in _check_selection_field_value elif val in dict(self._columns[field].selection(self, cr, uid, context=context)): TypeError: unhashable type: 'list'*

Serpent Consulting Services Pvt. Ltd.

Best Answer

Hello Samir,

Your are adding many2many field in a wrong way.

The syntax to add a many2many field is as following:

'Field_name': fields.many2many('Object', 'rel_table','Field1','Field2','String')

Here,

obj: _name of destination object. Bidirectional multiple relationship between objects.(required)
rel: relationship table to map the two fields together.(required)
field1: name of field in rel table storing the id of the current object (required)
field2: name of field in rel table storing the id of the target object (required)
String: field label

For Example,

'standard_ids':fields.many2many('school.standard','subject_standards_rel','standard_id','subject_id','Standards')

Now, In version 7.0 onward you can add the many2many field without 'rel_table' and 'fields'.

Syntax:

 'Field_name':fields.many2many('Object','String')

For Example:

'standard_ids':fields.many2many('school.standard','Standards'),

If you want use selection than your "_sel_func_field" must return list.

Hope now you will get whole concept of many2many field.

Thanks.

samir Guesmi

Author

thanks , i had solved this . thanks a lot

Borni DHIFI

Hi,

Please post your code so we can help you.

see syntaxe many2many :

fields.many2many doc V7.

Brett Lehrer

It looks like you're confusing some of the syntax for creating a many2many field. You need at least 5 arguments:

The other object to link to
The name of your new intermediary table to map the two together
The name of the current object's id column (in the database itself)
The name of the target object's id column (in the database itself)
The name of the field

A selection field is completely different and just allows picking from a predefined list of options.

Refer to doc.openerp.com/trunk for more explanation.

samir Guesmi

Author

thanks for your replay ,

import logging import string import datetime import re

from osv import osv, fields from tools.misc import ustr from tools.translate import _

class mymodule_product_field(osv.osv): _name = 'mymodule.product.field' _order = 'name' _columns = { 'product_id' : fields.many2many('product.product', id1='field_id' ,id2='product_id'), 'id': fields.char('id', size=16 ), 'name': fields.char('Name', size=16 ),

mymodule_product_field()

def _sel_func_field(self, cr, uid, context=None): obj = self.pool.get('mymodule.product.field') ids = obj.search(cr, uid, []) res = obj.read(cr, uid, ids, ['name', 'id'], context) res = [(r['id'], r['name']) for r in res] return res

class product_product(osv.osv): _inherit = 'product.product' _name = 'product.product'

_columns = {
    'myfield' : fields.many2many('mymodule.product.field', id1='product_id', id2='field_id' , string='MY FIELD', selection=_sel_func_field),
}

product_product()

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