Hey. I have made a custom module and by using that i have a custom view for portal user and i am doing that using controllers. I have what i want but that record is read only for him. How can i give write access to him? Kindly help. Thanks in advance

Right now i am trying the following line of code

@http.route('/my_attend_detail',type='http',auth='public',website=True)
def attend_rights(self,attend_detail=None):
    attend_detail = request.env ['op.attendance.line'].browse()
    try:
        attend_detail.check_access_rights('write')
        attend_detail.check_access_rule('write')
    except AccessError:
            return request.website.render("website.403")
    return request.render('attendance_website.attend_detail_temp',{'my_attend':attend_detail})