this is the coding structure used in old versions i think, if you have time have a look at the video to see how to define a compute field and its function

based on the video i change my code to the following

class Hr_Employee(osv.Model):

_inherit = "hr.employee"

@api.depends('preno_ar', 'nom_ar')

def _get_full_name_ar(self):

self._get_full_name_ar = (self.preno_ar or '') + ' ' + (self.nom_ar or '')

_columns = {

'preno_ar': fields.Char(

'الاسم'),

'nom_ar': fields.Char(

'النسب'),

'complete_name_ar': fields.Char(

'الاسم الكامل', compute= '_get_full_name_ar', store="True")

}

but i get 'preno_ar' fields dosen't exsist

can you define a field like this without using columns, i think you have defined fields correctly in your previous questions,

preno_ar = fields.Char(string='PreNo Ar', compute='_get_full_name_ar')

i tried this but unfortunatly the module won't be installed and the system stops 'conexion lost'

class hr_corp(models.Model):

_inherit = "hr.employee"

@api.depends('preno_emp_ar', 'nom_emp_ar')

def get_full_name_ar(self):

self._get_full_name_ar = (self.preno_emp_ar or '')+' '+(self.nom_emp_ar or '')

preno_emp_ar = fields.Char(string="الاسم")

nom_emp_ar = fields.Char(string="النسب")

complete_name_ar = fields.Char(string="الاسم الكامل", compute= 'get_full_name_ar', store="True")