Odoo8 TypeError: cannot concatenate 'str' and 'list' objects - odoo-8

Question

Good night,
i'm extending the odoo8 hr_recruitment module, and i need to show a list of applicants of a job. But when i'm going to access the form view of hr.job i get this error:
domain = domain + [(inverse, 'in', ids)]
TypeError: cannot concatenate 'str' and 'list' objects
Mi code is this:
class hr_job(osv.osv):
_inherit = "hr.job"
_name = "hr.job"
_inherits = {'mail.alias': 'alias_id'}
def _get_attached_docs(self, cr, uid, ids, field_name, arg, context=None):
res = {}
attachment_obj = self.pool.get('ir.attachment')
for job_id in ids:
applicant_ids = self.pool.get('hr.applicant').search(cr, uid, [('job_id', '=', job_id)], context=context)
res[job_id] = attachment_obj.search(
cr, uid, [
'|',
'&', ('res_model', '=', 'hr.job'), ('res_id', '=', job_id),
'&', ('res_model', '=', 'hr.applicant'), ('res_id', 'in', applicant_ids)
], context=context)
return res
def _count_all(self, cr, uid, ids, field_name, arg, context=None):
Applicant = self.pool['hr.applicant']
return {
job_id: {
'application_count': Applicant.search_count(cr, uid, [('job_id', '=', job_id)], context=context),
'documents_count': len(self._get_attached_docs(cr, uid, [job_id], field_name, arg, context=context)[job_id])
}
for job_id in ids
}
_columns = {
'survey_id': fields.many2one('survey.survey', 'Interview Form', help="Choose an interview form for this job position and you will be able to print/answer this interview from all applicants who apply for this job"),
'alias_id': fields.many2one('mail.alias', 'Alias', ondelete="restrict", required=True,
help="Email alias for this job position. New emails will automatically "
"create new applicants for this job position."),
'address_id': fields.many2one('res.partner', 'Job Location', help="Address where employees are working"),
'application_ids': fields.one2many('hr.applicant', 'job_id', 'Applications'),
'partner_id': fields.many2one('res.partner', 'Cliente'),
'application_count': fields.function(_count_all, type='integer', string='Applications', multi=True),
'manager_id': fields.related('department_id', 'manager_id', type='many2one', string='Department Manager', relation='hr.employee', readonly=True, store=True),
'document_ids': fields.function(_get_attached_docs, type='one2many', relation='ir.attachment', string='Applications'),
'documents_count': fields.function(_count_all, type='integer', string='Documents', multi=True),
'user_id': fields.many2one('res.users', 'Recruitment Responsible', track_visibility='onchange'),
'color': fields.integer('Color Index'),
'responsable_id': fields.many2one('res.users', 'Responsable'),
'estado': fields.selection([(u'No Iniciado', u'No Iniciado'),
(u'En Proceso', u'En Proceso'),
(u'Contratado(a)', u'Contratado(a)'),
(u'Suspendido', u'Suspendido'),
(u'Finalizado', u'Finalizado'),
('Otro', 'Otro')], 'Estado del Proceso'),
'otro': fields.char('Otro Estado'),
'fecha_inicio': fields.date('Fecha Inicio'),
'fecha_fin': fields.date('Fecha Fin'),
'partner_id': fields.many2one('res.partner', 'Cliente'),
'applicant_ids': fields.one2many('hr.applicant', 'job_id', 'Candidatos', domain="[('partner_id','=',partner_id)]"),
I think the problem is on domain of applicant_ids...
How can i solve this? Thanks in advance.

Answer 1

You need to change field domain to a list:
'applicant_ids': fields.one2many('hr.applicant',
'job_id',
'Candidatos',
domain=[('partner_id','=',partner_id)])
You can check this answer Understanding OpenERP domain filter?
or
The documentation for domains